ZIP codes and county lines in Georgia

404 of the 752 ZIP code areas in Georgia, or 53.7%, overlap more than one county. If your territories, tax rules or service areas are set by county and your list is by ZIP, these are the rows where the two disagree.

ZIP code areas: 752
In more than one county: 404
At least 5% in a second county: 289
Cross a state line: 3

How Georgia compares

Georgia ranks 4 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 159 of its counties have at least one split ZIP code area along an edge. 3 of its ZIP code areas also reach into Alabama and Tennessee, so a ZIP list that is meant to stop at the state line does not.

Counties with the most split ZIP code areas

Fulton County: 23 ZIP codes shared with another county
DeKalb County: 19 ZIP codes shared with another county
Gwinnett County: 16 ZIP codes shared with another county
Jackson County: 15 ZIP codes shared with another county
Hall County: 14 ZIP codes shared with another county

Every split ZIP code area in Georgia

Each row is one ZCTA and the counties its land falls in, largest share first. Counties in another state are marked with that state. Sort by the share outside the main county to put the most evenly divided ones first.

	Share of land by county
30004	Fulton County 68.3% Forsyth County 16.0% Cherokee County 15.6%	31.7%	3
30005	Fulton County 70.2% Forsyth County 29.8%	29.8%	2
30011	Barrow County 74.1% Gwinnett County 25.9%	25.9%	2
30012	Rockdale County 96.6% Walton County 2.8% DeKalb County 0.6%	3.4%	3
30013	Rockdale County 94.9% Newton County 5.1%	5.1%	2
30014	Newton County 77.6% Walton County 21.5% Jasper County 1.0%	22.4%	3
30016	Newton County 99.6% Rockdale County 0.4%	0.4%	2
30019	Gwinnett County 96.0% Walton County 4.0%	4.0%	2
30024	Gwinnett County 65.2% Forsyth County 32.0% Fulton County 2.8%	34.8%	3
30025	Walton County 70.6% Newton County 28.4% Morgan County 1.0%	29.4%	3
30028	Forsyth County 92.7% Cherokee County 7.3%	7.3%	2
30039	Gwinnett County 94.4% DeKalb County 5.6%	5.6%	2
30040	Forsyth County 97.8% Cherokee County 2.2%	2.2%	2
30052	Walton County 67.0% Gwinnett County 27.1% Rockdale County 4.6% Newton County 1.3%	33.0%	4
30054	Newton County 84.9% Walton County 15.1%	15.1%	2
30055	Newton County 49.3% Jasper County 38.7% Morgan County 12.0%	50.7%	3
30056	Jasper County 47.8% Morgan County 38.3% Newton County 13.8%	52.2%	3
30058	DeKalb County 99.5% Rockdale County 0.5%	0.5%	2
30075	Fulton County 84.2% Cobb County 14.1% Cherokee County 1.7%	15.8%	3
30084	DeKalb County 82.5% Gwinnett County 17.5%	17.5%	2
30087	DeKalb County 68.4% Gwinnett County 31.6%	31.6%	2
30092	Gwinnett County 98.5% Fulton County 1.5%	1.5%	2
30094	Rockdale County 99.4% DeKalb County 0.6%	0.6%	2
30097	Fulton County 49.7% Gwinnett County 43.0% Forsyth County 7.4%	50.3%	3
30101	Cobb County 68.2% Paulding County 26.4% Bartow County 4.9% Cherokee County 0.6%	31.8%	4
30102	Cherokee County 49.7% Bartow County 39.0% Cobb County 11.4%	50.3%	3
30103	Bartow County 68.6% Gordon County 24.1% Floyd County 7.4%	31.4%	3
30104	Polk County 56.9% Floyd County 30.7% Bartow County 12.3%	43.1%	3
30105	Floyd County 80.6% Chattooga County 19.4%	19.4%	2
30106	Cobb County 97.7% Douglas County 2.3%	2.3%	2
30107	Cherokee County 80.4% Pickens County 15.1% Forsyth County 4.5%	19.6%	3
30108	Carroll County 96.4% Heard County 3.6%	3.6%	2
30110	Haralson County 89.4% Carroll County 10.6%	10.6%	2
30113	Haralson County 92.4% Polk County 7.6%	7.6%	2
30120	Bartow County 99.6% Paulding County 0.4%	0.4%	2
30122	Douglas County 99.3% Cobb County 0.7%	0.7%	2
30124	Floyd County 98.9% Polk County 1.1%	1.1%	2
30125	Polk County 97.3% Floyd County 2.2% Haralson County 0.5%	2.7%	3
30127	Cobb County 85.0% Paulding County 15.1%	15.1%	2
30134	Douglas County 67.6% Paulding County 32.4%	32.4%	2
30139	Gordon County 60.2% Pickens County 21.8% Bartow County 18.1%	39.8%	3
30141	Paulding County 99.8% Cobb County 0.2%	0.2%	2
30143	Pickens County 88.1% Dawson County 9.9% Cherokee County 2.0%	11.9%	3
30145	Bartow County 82.0% Floyd County 18.1%	18.1%	2
30147	Floyd County 92.5% Polk County 7.5%	7.5%	2
30148	Dawson County 54.6% Pickens County 45.4%	45.4%	2
30153	Polk County 70.8% Paulding County 20.1% Haralson County 9.1%	29.2%	3
30157	Paulding County 99.0% Cobb County 1.0%	1.0%	2
30161	Floyd County 98.5% Bartow County 1.5%	1.5%	2
30165	Floyd County 98.1% Cherokee County, AL 1.0% Chattooga County 0.9%	1.9%	3
30168	Cobb County 90.3% Douglas County 9.7%	9.7%	2
30170	Carroll County 52.0% Heard County 48.0%	48.0%	2
30171	Bartow County 85.9% Gordon County 14.1%	14.1%	2
30173	Floyd County 90.4% Polk County 9.6%	9.6%	2
30175	Pickens County 57.1% Gilmer County 42.9%	42.9%	2
30178	Bartow County 60.8% Polk County 22.3% Paulding County 16.8%	39.2%	3
30179	Carroll County 51.6% Paulding County 27.4% Haralson County 21.0%	48.4%	3
30180	Carroll County 62.5% Douglas County 27.7% Paulding County 9.8%	37.5%	3
30182	Carroll County 63.4% Haralson County 36.6%	36.6%	2
30183	Cherokee County 95.9% Pickens County 3.7% Bartow County 0.4%	4.1%	3
30184	Bartow County 89.1% Cherokee County 10.9%	10.9%	2
30185	Carroll County 95.5% Douglas County 4.5%	4.5%	2
30187	Douglas County 98.5% Carroll County 1.5%	1.5%	2
30188	Cherokee County 99.1% Cobb County 0.9%	0.9%	2
30204	Lamar County 91.9% Upson County 4.2% Monroe County 3.9%	8.1%	3
30205	Fayette County 60.5% Spalding County 39.5%	39.5%	2
30213	Fulton County 99.8% Fayette County 0.2%	0.2%	2
30214	Fayette County 99.6% Fulton County 0.4%	0.4%	2
30215	Fayette County 97.8% Clayton County 2.2%	2.2%	2
30217	Heard County 97.1% Troup County 2.9%	2.9%	2
30220	Coweta County 56.6% Meriwether County 43.4%	43.4%	2
30223	Spalding County 99.9% Henry County under 0.1%	under 0.1%	2
30224	Spalding County 74.7% Pike County 15.1% Lamar County 10.1%	25.3%	3
30228	Henry County 65.7% Clayton County 28.4% Spalding County 5.9%	34.3%	3
30230	Troup County 56.0% Meriwether County 22.4% Heard County 16.5% Coweta County 5.2%	44.0%	4
30233	Butts County 87.0% Monroe County 5.5% Henry County 4.5% Lamar County 3.0% Newton County 0.1%	13.0%	5
30234	Butts County 93.0% Henry County 7.0%	7.0%	2
30236	Clayton County 90.6% Henry County 9.4%	9.4%	2
30238	Clayton County 86.2% Fayette County 13.8%	13.8%	2
30240	Troup County 99.8% Heard County 0.2%	0.2%	2
30248	Henry County 83.7% Butts County 8.3% Spalding County 8.0%	16.3%	3
30251	Meriwether County 97.2% Coweta County 2.8%	2.8%	2
30252	Henry County 95.0% Rockdale County 5.0%	5.0%	2
30256	Pike County 70.8% Upson County 20.6% Lamar County 8.6%	29.2%	3
30257	Lamar County 91.0% Pike County 9.0%	9.0%	2
30258	Pike County 61.9% Upson County 38.1%	38.1%	2
30263	Coweta County 99.5% Heard County 0.5%	0.5%	2
30268	Fulton County 87.1% Coweta County 12.9%	12.9%	2
30273	Clayton County 86.3% Henry County 13.7%	13.7%	2
30276	Coweta County 76.9% Meriwether County 18.9% Fayette County 4.2%	23.1%	3
30281	Henry County 79.3% Rockdale County 19.1% Clayton County 1.6%	20.8%	3
30285	Upson County 61.8% Lamar County 20.8% Pike County 17.4%	38.2%	3
30288	DeKalb County 71.8% Clayton County 28.1%	28.1%	2
30292	Pike County 77.6% Spalding County 22.4%	22.4%	2
30294	DeKalb County 36.3% Clayton County 35.2% Henry County 27.4% Rockdale County 1.2%	63.8%	4
30295	Pike County 97.3% Lamar County 2.7%	2.7%	2
30296	Clayton County 80.3% Fulton County 19.6%	19.6%	2
30306	Fulton County 58.5% DeKalb County 41.5%	41.5%	2
30307	DeKalb County 82.2% Fulton County 17.8%	17.8%	2
30315	Fulton County 99.5% DeKalb County 0.5%	0.5%	2
30316	DeKalb County 84.3% Fulton County 15.8%	15.8%	2
30317	DeKalb County 99.8% Fulton County 0.2%	0.2%	2
30319	DeKalb County 85.8% Fulton County 14.2%	14.2%	2
30324	Fulton County 75.5% DeKalb County 24.5%	24.5%	2
30337	Fulton County 53.0% Clayton County 47.0%	47.0%	2
30338	DeKalb County 98.0% Fulton County 2.0%	2.0%	2
30339	Cobb County 95.6% Fulton County 4.4%	4.4%	2
30340	DeKalb County 80.9% Gwinnett County 19.1%	19.1%	2
30349	Fulton County 85.5% Clayton County 14.5%	14.5%	2
30350	Fulton County 99.4% DeKalb County 0.6%	0.6%	2
30354	Fulton County 87.1% Clayton County 12.9%	12.9%	2
30360	DeKalb County 72.3% Gwinnett County 27.7%	27.7%	2
30411	Wheeler County 85.1% Laurens County 14.9%	14.9%	2
30413	Jefferson County 55.0% Washington County 30.8% Johnson County 14.2%	45.0%	3
30417	Evans County 86.3% Tattnall County 13.7%	13.7%	2
30420	Candler County 57.5% Tattnall County 41.7% Evans County 0.8%	42.5%	3
30425	Emanuel County 50.3% Jenkins County 37.2% Bulloch County 12.5%	49.7%	3
30426	Burke County 72.1% Screven County 27.9%	27.9%	2
30427	Tattnall County 82.5% Long County 17.0% Evans County 0.5%	17.6%	3
30428	Wheeler County 74.6% Laurens County 25.4%	25.4%	2
30434	Jefferson County 81.8% Burke County 18.2%	18.2%	2
30436	Toombs County 80.8% Emanuel County 16.6% Tattnall County 2.1% Treutlen County 0.4%	19.1%	4
30439	Candler County 97.3% Emanuel County 2.6% Bulloch County 0.1%	2.7%	3
30441	Emanuel County 56.2% Burke County 42.4% Jenkins County 1.4%	43.8%	3
30442	Jenkins County 88.7% Burke County 10.6% Screven County 0.7%	11.3%	3
30445	Montgomery County 99.1% Treutlen County 0.9%	0.9%	2
30446	Screven County 61.6% Effingham County 38.4%	38.4%	2
30450	Bulloch County 98.0% Emanuel County 2.0%	2.0%	2
30452	Bulloch County 92.5% Evans County 6.8% Candler County 0.7%	7.5%	3
30455	Screven County 97.4% Jenkins County 2.6%	2.6%	2
30457	Treutlen County 92.7% Montgomery County 4.6% Emanuel County 2.8%	7.3%	3
30470	Montgomery County 56.7% Treutlen County 43.3%	43.3%	2
30471	Emanuel County 94.9% Bulloch County 3.4% Candler County 1.7%	5.1%	3
30473	Toombs County 54.2% Montgomery County 45.8%	45.8%	2
30474	Toombs County 71.1% Montgomery County 21.4% Emanuel County 4.6% Treutlen County 2.9%	28.9%	4
30506	Hall County 78.3% Forsyth County 21.7%	21.7%	2
30510	Banks County 56.9% Habersham County 28.2% Hall County 14.9%	43.1%	3
30511	Banks County 92.8% Stephens County 4.1% Habersham County 3.1%	7.2%	3
30512	Union County 99.2% Fannin County 0.8%	0.8%	2
30513	Fannin County 95.1% Gilmer County 4.9%	4.9%	2
30516	Hart County 99.9% Franklin County 0.1%	0.1%	2
30517	Jackson County 52.2% Hall County 29.6% Gwinnett County 10.9% Barrow County 7.3%	47.8%	4
30518	Gwinnett County 78.8% Hall County 21.2%	21.2%	2
30519	Gwinnett County 88.3% Hall County 11.7%	11.7%	2
30520	Hart County 52.7% Franklin County 47.3%	47.3%	2
30521	Franklin County 94.2% Banks County 5.8%	5.8%	2
30522	Gilmer County 73.1% Fannin County 26.9%	26.9%	2
30523	Habersham County 85.0% Rabun County 15.0% White County under 0.1%	15.0%	3
30525	Rabun County 98.0% Towns County 1.9%	1.9%	2
30527	Hall County 100.0% White County under 0.1%	under 0.1%	2
30528	White County 89.0% Lumpkin County 11.1%	11.1%	2
30529	Jackson County 74.2% Banks County 25.8%	25.8%	2
30530	Banks County 41.8% Jackson County 25.8% Madison County 17.3% Franklin County 15.1%	58.2%	4
30531	Habersham County 85.3% Hall County 14.7%	14.7%	2
30533	Lumpkin County 95.3% Dawson County 2.6% Hall County 1.7% White County 0.4%	4.7%	4
30534	Dawson County 85.2% Lumpkin County 9.8% Forsyth County 3.0% Pickens County 1.3% Cherokee County 0.7%	14.8%	5
30536	Gilmer County 97.8% Dawson County 2.2%	2.2%	2
30538	Stephens County 88.2% Franklin County 11.8%	11.8%	2
30543	Hall County 57.0% Banks County 32.5% Jackson County 10.6%	43.0%	3
30548	Jackson County 62.0% Barrow County 20.0% Hall County 9.1% Gwinnett County 8.9%	38.0%	4
30553	Franklin County 58.9% Hart County 41.1%	41.1%	2
30554	Hall County 60.1% Banks County 39.9%	39.9%	2
30557	Franklin County 61.6% Stephens County 38.4%	38.4%	2
30558	Jackson County 53.8% Banks County 46.3%	46.3%	2
30560	Fannin County 88.8% Union County 11.2%	11.2%	2
30563	Habersham County 98.8% Stephens County 1.2%	1.2%	2
30564	Hall County 57.3% Lumpkin County 37.7% White County 5.0%	42.7%	3
30565	Jackson County 87.0% Madison County 13.0%	13.0%	2
30567	Jackson County 98.8% Hall County 1.2%	1.2%	2
30572	Union County 69.7% Fannin County 30.4%	30.4%	2
30575	Jackson County 67.4% Hall County 32.6%	32.6%	2
30577	Stephens County 83.1% Franklin County 11.2% Habersham County 4.3% Banks County 1.4%	16.9%	4
30582	Towns County 62.5% Union County 37.5%	37.5%	2
30601	Clarke County 90.2% Madison County 6.0% Jackson County 3.9%	9.8%	3
30605	Clarke County 95.0% Oconee County 5.0%	5.0%	2
30606	Clarke County 73.6% Oconee County 26.4%	26.4%	2
30607	Jackson County 63.2% Clarke County 36.8%	36.8%	2
30619	Oglethorpe County 96.4% Oconee County 3.6%	3.6%	2
30620	Barrow County 77.9% Gwinnett County 15.6% Walton County 6.5%	22.1%	3
30621	Oconee County 64.6% Morgan County 35.4%	35.4%	2
30622	Oconee County 68.0% Clarke County 22.6% Jackson County 8.7% Barrow County 0.7%	32.0%	4
30624	Elbert County 82.5% Hart County 10.8% Madison County 6.6%	17.5%	3
30625	Morgan County 88.2% Putnam County 11.8%	11.8%	2
30627	Oglethorpe County 82.4% Madison County 17.6%	17.6%	2
30628	Madison County 70.0% Oglethorpe County 29.9%	29.9%	2
30629	Madison County 71.2% Oglethorpe County 28.8%	28.8%	2
30631	Taliaferro County 95.8% Wilkes County 3.0% Greene County 1.2%	4.2%	3
30633	Madison County 97.9% Franklin County 1.8% Banks County 0.3%	2.1%	3
30634	Elbert County 72.7% Hart County 27.3%	27.3%	2
30635	Elbert County 98.6% Hart County 1.4%	1.4%	2
30641	Walton County 77.1% Morgan County 22.9%	22.9%	2
30646	Madison County 99.2% Clarke County 0.4% Jackson County 0.4%	0.8%	3
30650	Morgan County 89.9% Greene County 8.1% Walton County 1.2% Putnam County 0.7%	10.1%	4
30656	Walton County 96.6% Barrow County 3.4%	3.4%	2
30660	Wilkes County 62.9% Oglethorpe County 36.1% Taliaferro County 1.0%	37.1%	3
30662	Franklin County 51.3% Hart County 25.3% Madison County 21.8% Elbert County 1.7%	48.8%	4
30666	Barrow County 59.6% Oconee County 30.6% Jackson County 9.8%	40.4%	3
30668	Wilkes County 84.2% Lincoln County 15.8%	15.8%	2
30669	Greene County 77.0% Oglethorpe County 11.8% Taliaferro County 11.2%	23.0%	3
30677	Oconee County 86.6% Greene County 13.4%	13.4%	2
30678	Greene County 73.9% Hancock County 21.8% Taliaferro County 4.2%	26.1%	3
30680	Barrow County 94.6% Jackson County 3.1% Oconee County 2.3%	5.4%	3
30683	Oglethorpe County 57.2% Clarke County 41.4% Madison County 1.4%	42.8%	3
30701	Gordon County 94.2% Floyd County 5.8%	5.8%	2
30707	Walker County 96.0% Catoosa County 4.0%	4.0%	2
30710	Whitfield County 99.8% Catoosa County 0.2%	0.2%	2
30721	Whitfield County 95.8% Murray County 4.3%	4.3%	2
30731	Chattooga County 54.4% Walker County 29.8% Dade County 15.8%	45.6%	3
30733	Gordon County 89.1% Floyd County 10.9%	10.9%	2
30734	Gordon County 88.3% Pickens County 11.7%	11.7%	2
30735	Gordon County 71.7% Murray County 20.3% Whitfield County 8.0%	28.3%	3
30736	Catoosa County 95.5% Whitfield County 3.1% Walker County 1.3%	4.5%	3
30738	Dade County 68.3% Walker County 31.7%	31.7%	2
30739	Walker County 74.9% Catoosa County 25.1%	25.1%	2
30740	Whitfield County 92.0% Walker County 8.1%	8.1%	2
30741	Walker County 72.3% Catoosa County 27.6% Hamilton County, TN under 0.1%	27.7%	3
30742	Catoosa County 99.9% Walker County 0.1%	0.1%	2
30746	Gordon County 84.6% Walker County 15.4%	15.4%	2
30747	Chattooga County 90.6% Walker County 9.4%	9.4%	2
30750	Walker County 64.4% Dade County 35.6%	35.6%	2
30753	Chattooga County 60.8% Walker County 39.2%	39.2%	2
30755	Whitfield County 52.4% Catoosa County 47.6%	47.6%	2
30802	Columbia County 98.3% McDuffie County 1.7%	1.7%	2
30803	Jefferson County 99.0% Glascock County 1.1%	1.1%	2
30805	Richmond County 59.4% Burke County 40.6%	40.6%	2
30808	McDuffie County 98.4% Warren County 1.6%	1.6%	2
30810	Glascock County 90.8% Jefferson County 4.6% Warren County 4.6%	9.2%	3
30813	Columbia County 95.3% Richmond County 4.7%	4.7%	2
30814	Columbia County 84.0% McDuffie County 16.0%	16.0%	2
30815	Richmond County 71.9% Burke County 28.1%	28.1%	2
30816	Burke County 86.5% Jefferson County 13.5%	13.5%	2
30817	Lincoln County 98.0% Wilkes County 2.0%	2.0%	2
30820	Glascock County 54.4% Warren County 17.0% Washington County 16.2% Hancock County 12.4%	45.6%	4
30823	Jefferson County 59.2% Warren County 24.6% Glascock County 16.3%	40.8%	3
30824	McDuffie County 98.3% Warren County 1.6% Columbia County 0.2%	1.7%	3
30828	Warren County 96.2% Glascock County 3.8%	3.8%	2
30907	Columbia County 77.5% Richmond County 22.5%	22.5%	2
30909	Richmond County 98.5% Columbia County 1.5%	1.5%	2
31002	Emanuel County 45.2% Laurens County 21.8% Johnson County 21.4% Treutlen County 11.6%	54.8%	4
31008	Peach County 62.0% Crawford County 34.2% Houston County 3.8%	38.0%	3
31011	Dodge County 96.1% Laurens County 3.9%	3.9%	2
31012	Dodge County 74.6% Bleckley County 22.8% Laurens County 2.6%	25.4%	3
31014	Bleckley County 77.0% Dodge County 14.2% Twiggs County 8.6% Pulaski County 0.3%	23.1%	4
31015	Crisp County 96.4% Wilcox County 3.0% Dooly County 0.5%	3.6%	3
31016	Monroe County 43.6% Upson County 33.6% Crawford County 18.0% Lamar County 4.8%	56.4%	4
31017	Wilkinson County 53.0% Twiggs County 27.5% Bleckley County 19.5%	47.0%	3
31020	Twiggs County 96.0% Bibb County 4.0%	4.0%	2
31022	Laurens County 95.1% Bleckley County 4.9%	4.9%	2
31023	Dodge County 96.4% Pulaski County 3.6%	3.6%	2
31029	Monroe County 99.9% Butts County under 0.1%	under 0.1%	2
31030	Peach County 58.5% Crawford County 38.0% Macon County 3.4% Houston County under 0.1%	41.5%	4
31031	Wilkinson County 66.0% Twiggs County 16.7% Baldwin County 13.1% Jones County 4.2%	34.0%	4
31033	Jones County 88.6% Baldwin County 11.4%	11.4%	2
31036	Pulaski County 81.9% Houston County 16.7% Bleckley County 1.1% Dodge County 0.3%	18.1%	4
31037	Telfair County 36.0% Dodge County 29.7% Wheeler County 25.5% Laurens County 8.8%	64.0%	4
31038	Jones County 58.6% Jasper County 32.3% Putnam County 9.0%	41.4%	3
31044	Twiggs County 91.1% Wilkinson County 8.9%	8.9%	2
31045	Hancock County 75.6% Warren County 24.4%	24.4%	2
31046	Monroe County 69.8% Jones County 30.3%	30.3%	2
31049	Johnson County 80.2% Emanuel County 19.8%	19.8%	2
31052	Bibb County 52.4% Crawford County 47.6%	47.6%	2
31058	Taylor County 59.9% Marion County 39.5% Schley County 0.5%	40.1%	3
31060	Telfair County 70.0% Dodge County 30.0%	30.0%	2
31061	Baldwin County 80.8% Wilkinson County 14.7% Hancock County 3.4% Putnam County 1.0% Jones County under 0.1%	19.2%	5
31063	Macon County 88.2% Dooly County 11.8%	11.8%	2
31064	Jasper County 100.0% Newton County under 0.1%	under 0.1%	2
31065	Laurens County 66.0% Bleckley County 26.7% Wilkinson County 7.3%	34.0%	3
31066	Crawford County 92.8% Monroe County 6.0% Bibb County 1.2%	7.2%	3
31068	Macon County 100.0% Schley County under 0.1%	under 0.1%	2
31069	Houston County 95.5% Peach County 3.9% Macon County 0.6%	4.5%	3
31071	Pulaski County 68.1% Wilcox County 31.9%	31.9%	2
31072	Wilcox County 92.7% Crisp County 5.0% Dooly County 2.3%	7.3%	3
31076	Taylor County 69.6% Macon County 30.4%	30.4%	2
31077	Dodge County 53.2% Telfair County 46.8%	46.8%	2
31079	Wilcox County 90.9% Ben Hill County 9.1%	9.1%	2
31081	Taylor County 88.3% Macon County 10.5% Schley County 1.2%	11.7%	3
31082	Washington County 97.1% Baldwin County 2.9%	2.9%	2
31087	Hancock County 97.6% Baldwin County 1.6% Washington County 0.7%	2.4%	3
31089	Washington County 85.0% Johnson County 15.0%	15.0%	2
31091	Dooly County 94.8% Pulaski County 2.7% Houston County 2.5%	5.2%	3
31092	Dooly County 91.3% Crisp County 5.4% Wilcox County 3.4%	8.7%	3
31096	Johnson County 88.7% Washington County 6.9% Laurens County 4.3%	11.3%	3
31097	Upson County 86.8% Lamar County 11.5% Monroe County 1.7%	13.2%	3
31210	Bibb County 75.2% Monroe County 24.8%	24.8%	2
31211	Jones County 81.7% Bibb County 18.3%	18.3%	2
31217	Jones County 40.0% Bibb County 30.1% Twiggs County 29.8%	60.0%	3
31220	Bibb County 54.7% Monroe County 45.3%	45.3%	2
31301	Liberty County 57.4% Long County 42.6%	42.6%	2
31302	Chatham County 58.7% Effingham County 41.3%	41.3%	2
31308	Bryan County 80.5% Bulloch County 19.5%	19.5%	2
31313	Liberty County 97.1% Long County 2.9%	2.9%	2
31316	Long County 100.0% Liberty County under 0.1%	under 0.1%	2
31321	Bryan County 50.3% Bulloch County 49.7%	49.7%	2
31323	Liberty County 54.0% McIntosh County 32.0% Long County 13.9%	46.0%	3
31324	Bryan County 99.9% Liberty County under 0.1%	under 0.1%	2
31503	Ware County 91.4% Brantley County 7.9% Pierce County 0.7%	8.6%	3
31510	Bacon County 89.9% Pierce County 10.1%	10.1%	2
31513	Appling County 100.0% Jeff Davis County under 0.1%	under 0.1%	2
31518	Appling County 57.4% Pierce County 30.8% Wayne County 11.8%	42.6%	3
31519	Coffee County 89.0% Jeff Davis County 10.9%	10.9%	2
31537	Charlton County 95.2% Camden County 4.8%	4.8%	2
31539	Jeff Davis County 98.0% Appling County 2.0%	2.0%	2
31543	Brantley County 50.3% Wayne County 41.6% Glynn County 8.1%	49.7%	3
31549	Telfair County 56.5% Wheeler County 43.5%	43.5%	2
31550	Ware County 91.9% Clinch County 8.1%	8.1%	2
31551	Pierce County 52.4% Bacon County 47.6%	47.6%	2
31552	Ware County 90.2% Atkinson County 6.7% Coffee County 3.1%	9.8%	3
31553	Brantley County 98.1% Charlton County 1.9%	1.9%	2
31554	Coffee County 51.7% Ware County 25.1% Bacon County 23.2%	48.3%	3
31555	Wayne County 83.2% Appling County 16.8%	16.8%	2
31557	Pierce County 93.5% Brantley County 3.9% Appling County 2.6%	6.5%	3
31560	Wayne County 99.3% Appling County 0.7%	0.7%	2
31566	Brantley County 79.2% Glynn County 13.7% Camden County 7.0%	20.8%	3
31601	Lowndes County 99.6% Brooks County 0.4%	0.4%	2
31602	Lowndes County 61.0% Brooks County 39.0%	39.0%	2
31606	Lowndes County 93.9% Echols County 6.1%	6.1%	2
31624	Atkinson County 87.2% Coffee County 11.2% Ware County 1.6%	12.8%	3
31626	Thomas County 92.1% Brooks County 7.9%	7.9%	2
31630	Clinch County 81.9% Echols County 18.1%	18.1%	2
31631	Echols County 57.6% Clinch County 32.1% Charlton County 8.7% Ware County 1.6%	42.4%	4
31632	Lowndes County 79.0% Cook County 21.0%	21.0%	2
31635	Lanier County 78.5% Atkinson County 11.7% Clinch County 9.7% Lowndes County under 0.1%	21.5%	4
31636	Echols County 61.1% Lowndes County 38.9%	38.9%	2
31637	Cook County 41.4% Berrien County 35.6% Colquitt County 16.7% Tift County 6.2%	58.6%	4
31639	Berrien County 98.9% Lanier County 1.1%	1.1%	2
31641	Lowndes County 58.9% Lanier County 41.1%	41.1%	2
31642	Atkinson County 82.9% Clinch County 17.1%	17.1%	2
31645	Berrien County 69.9% Lanier County 18.0% Lowndes County 12.1%	30.1%	3
31649	Lanier County 97.8% Echols County 2.2%	2.2%	2
31650	Atkinson County 66.9% Coffee County 33.1%	33.1%	2
31701	Dougherty County 89.9% Lee County 10.1%	10.1%	2
31705	Dougherty County 76.3% Worth County 12.6% Mitchell County 11.2%	23.7%	3
31707	Dougherty County 91.1% Lee County 8.9%	8.9%	2
31711	Sumter County 61.9% Macon County 37.3% Schley County 0.8%	38.1%	3
31712	Crisp County 78.0% Turner County 20.5% Worth County 1.5%	22.0%	3
31714	Turner County 91.4% Worth County 7.8% Tift County 0.8%	8.6%	3
31719	Sumter County 99.3% Schley County 0.7%	0.7%	2
31720	Brooks County 92.8% Thomas County 7.2%	7.2%	2
31721	Dougherty County 82.9% Baker County 15.8% Lee County 0.7% Terrell County 0.6%	17.1%	4
31730	Mitchell County 96.9% Decatur County 3.1%	3.1%	2
31733	Irwin County 61.4% Tift County 38.6%	38.6%	2
31738	Thomas County 73.6% Colquitt County 26.4%	26.4%	2
31743	Lee County 59.3% Sumter County 40.7%	40.7%	2
31744	Worth County 54.2% Colquitt County 42.7% Mitchell County 3.2%	45.8%	3
31749	Berrien County 78.2% Irwin County 13.5% Tift County 8.3%	21.8%	3
31750	Ben Hill County 74.5% Irwin County 25.5% Wilcox County under 0.1%	25.5%	3
31763	Lee County 99.2% Dougherty County 0.7% Terrell County 0.1%	0.8%	3
31764	Sumter County 85.8% Lee County 14.3%	14.3%	2
31765	Mitchell County 50.4% Thomas County 28.7% Colquitt County 20.9%	49.6%	3
31771	Colquitt County 96.9% Worth County 3.1%	3.1%	2
31773	Thomas County 78.9% Grady County 19.1% Colquitt County 2.0%	21.1%	3
31775	Colquitt County 43.5% Tift County 37.1% Worth County 19.3%	56.5%	3
31778	Brooks County 61.7% Thomas County 35.8% Colquitt County 2.5%	38.3%	3
31779	Mitchell County 64.8% Grady County 33.1% Thomas County 2.1%	35.2%	3
31780	Sumter County 90.5% Webster County 9.5%	9.5%	2
31783	Turner County 52.5% Irwin County 28.1% Ben Hill County 19.4%	47.5%	3
31787	Lee County 66.0% Sumter County 34.0%	34.0%	2
31788	Colquitt County 98.1% Brooks County 1.9%	1.9%	2
31790	Turner County 94.1% Irwin County 3.2% Tift County 2.7%	5.9%	3
31791	Worth County 99.7% Dougherty County 0.3%	0.3%	2
31792	Thomas County 70.7% Grady County 29.3%	29.3%	2
31794	Tift County 90.7% Berrien County 9.3%	9.3%	2
31795	Worth County 73.7% Tift County 26.3%	26.3%	2
31796	Worth County 99.1% Crisp County 0.9%	0.9%	2
31798	Irwin County 53.3% Coffee County 34.1% Ben Hill County 12.6%	46.7%	3
31801	Marion County 65.0% Talbot County 32.6% Muscogee County 2.4%	35.0%	3
31803	Marion County 93.7% Schley County 5.6% Webster County 0.7%	6.3%	3
31805	Chattahoochee County 83.4% Stewart County 16.6%	16.6%	2
31806	Schley County 92.9% Macon County 7.1%	7.1%	2
31808	Harris County 79.2% Muscogee County 20.8%	20.8%	2
31812	Talbot County 79.5% Taylor County 20.5%	20.5%	2
31816	Meriwether County 85.8% Talbot County 14.2%	14.2%	2
31820	Muscogee County 60.3% Harris County 39.7%	39.7%	2
31822	Harris County 49.7% Troup County 32.6% Meriwether County 17.7%	50.3%	3
31824	Webster County 98.2% Marion County 1.8%	1.8%	2
31825	Stewart County 70.2% Webster County 29.8%	29.8%	2
31826	Harris County 66.0% Talbot County 34.0%	34.0%	2
31829	Muscogee County 84.1% Harris County 15.9%	15.9%	2
31830	Meriwether County 90.2% Harris County 9.8%	9.8%	2
31831	Harris County 62.3% Talbot County 37.7%	37.7%	2
31832	Webster County 87.5% Randolph County 12.5%	12.5%	2
31833	Harris County 60.6% Troup County 39.4%	39.4%	2
31905	Chattahoochee County 81.0% Muscogee County 19.0%	19.0%	2
36855	Chambers County, AL 98.9% Troup County 1.1%	1.1%	2
39813	Calhoun County 46.5% Early County 40.1% Baker County 13.4%	53.5%	3
39823	Early County 95.2% Miller County 4.8%	4.8%	2
39824	Clay County 70.8% Early County 29.1%	29.1%	2
39825	Decatur County 83.7% Seminole County 16.3%	16.3%	2
39836	Randolph County 86.3% Clay County 13.7%	13.7%	2
39837	Miller County 78.3% Baker County 11.2% Decatur County 10.1% Early County 0.4%	21.7%	4
39841	Early County 70.9% Baker County 17.4% Miller County 11.7%	29.1%	3
39842	Terrell County 99.7% Calhoun County 0.3%	0.3%	2
39845	Seminole County 84.2% Miller County 15.4% Early County 0.5%	15.8%	3
39846	Calhoun County 90.7% Clay County 8.0% Randolph County 1.2%	9.3%	3
39851	Clay County 90.9% Randolph County 9.1%	9.1%	2
39854	Quitman County 93.6% Clay County 6.4%	6.4%	2
39859	Seminole County 96.7% Miller County 3.3%	3.3%	2
39861	Early County 98.0% Seminole County 2.0%	2.0%	2
39862	Calhoun County 58.5% Baker County 41.5%	41.5%	2
39866	Calhoun County 95.8% Randolph County 4.2%	4.2%	2
39867	Quitman County 45.5% Randolph County 26.7% Clay County 18.6% Stewart County 9.2%	54.5%	4
39877	Terrell County 62.9% Webster County 37.1%	37.1%	2
39886	Randolph County 92.8% Terrell County 4.3% Calhoun County 2.9%	7.2%	3
39897	Grady County 91.9% Decatur County 8.1%	8.1%	2

What to do with this

If a ZIP code in your list is split, the ZIP alone cannot tell you which county an address is in. For most work that is fine. It matters when the county decides something: a sales tax rate, a licence, a franchise agreement written by county, or a service area somebody promised by county name.

The ZIP list audit checks your own list against the same Census data in your browser, and the ZIP spreadsheet comparison covers when a ZIP list is enough and when it is not.

What these numbers are, and are not

A ZCTA is not quite a ZIP code. ZIP Code Tabulation Areas are the Census Bureau's approximations of ZIP code areas, built by grouping census blocks by the ZIP codes of the addresses in them. USPS ZIP codes are delivery routes, not areas, and the two do not always match.
Some ZIP codes have no ZCTA at all. PO box ZIPs, ZIPs for a single building or a single large organisation, and military ZIPs usually have no area of their own, so they cannot be split across counties here and will not match any area in a map.
Land share is not population share. A ZCTA with 20% of its land in a second county might have almost none of its people there, or most of them. The shares here measure area, which is what the Census file publishes.
Tiny overlaps are included. A ZCTA counts as overlapping a county if the Census file lists any part of it there, including slivers along a road or river. That is why the share with at least 5% of land in a second county is shown alongside.

Source: U.S. Census Bureau, 2020 ZCTA to County relationship file, public domain. Counts use 2020 ZCTAs and 2020 county boundaries. ZIP codes added by USPS since then are not in it, and Connecticut's counties have since been replaced by planning regions in Census data.

Route by the boundary, not the ZIP

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