ZIP codes and county lines in Minnesota

365 of the 887 ZIP code areas in Minnesota, or 41.1%, 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: 887
In more than one county: 365
At least 5% in a second county: 297
Cross a state line: 14

How Minnesota compares

Minnesota ranks 13 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 86 of its counties have at least one split ZIP code area along an edge. 14 of its ZIP code areas also reach into Iowa, North Dakota and South Dakota, so a ZIP list that is meant to stop at the state line does not.

Counties with the most split ZIP code areas

Polk County: 20 ZIP codes shared with another county
Cass County: 18 ZIP codes shared with another county
Otter Tail County: 18 ZIP codes shared with another county
Redwood County: 17 ZIP codes shared with another county
Stearns County: 17 ZIP codes shared with another county

Every split ZIP code area in Minnesota

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
51360	Dickinson County, IA 97.0% Jackson County 3.0%	3.0%	2
55006	Kanabec County 38.2% Isanti County 34.2% Pine County 19.8% Chisago County 7.8%	61.8%	4
55007	Kanabec County 61.4% Pine County 38.6%	38.6%	2
55008	Isanti County 99.3% Chisago County 0.7%	0.7%	2
55009	Goodhue County 82.3% Dakota County 17.7%	17.7%	2
55018	Goodhue County 91.2% Rice County 8.8%	8.8%	2
55025	Anoka County 54.2% Washington County 38.5% Chisago County 7.3%	45.8%	3
55027	Goodhue County 99.2% Wabasha County 0.8%	0.8%	2
55030	Pine County 79.8% Kanabec County 20.2%	20.2%	2
55033	Dakota County 75.4% Washington County 21.2% Goodhue County 3.4%	24.6%	3
55037	Pine County 93.0% Kanabec County 7.0%	7.0%	2
55038	Washington County 70.2% Anoka County 29.5% Ramsey County 0.3%	29.9%	3
55040	Isanti County 99.9% Anoka County under 0.1%	under 0.1%	2
55041	Wabasha County 85.0% Goodhue County 15.0%	15.0%	2
55044	Dakota County 69.5% Scott County 30.5%	30.5%	2
55049	Steele County 90.9% Rice County 9.1%	9.1%	2
55051	Kanabec County 86.3% Mille Lacs County 13.7%	13.7%	2
55052	Rice County 84.1% Waseca County 10.1% Steele County 5.8%	15.9%	3
55053	Rice County 68.7% Goodhue County 31.3%	31.3%	2
55056	Chisago County 69.4% Isanti County 30.6%	30.6%	2
55057	Rice County 54.0% Dakota County 45.8% Goodhue County 0.2%	46.0%	3
55065	Dakota County 98.4% Goodhue County 1.6%	1.6%	2
55069	Chisago County 82.1% Pine County 17.9%	17.9%	2
55070	Anoka County 63.5% Isanti County 36.5%	36.5%	2
55072	Pine County 94.3% Kanabec County 5.7%	5.7%	2
55073	Washington County 86.3% Chisago County 13.8%	13.8%	2
55079	Chisago County 42.9% Isanti County 30.5% Anoka County 26.6%	57.1%	3
55080	Isanti County 75.6% Chisago County 24.4%	24.4%	2
55088	Rice County 75.7% Scott County 24.3%	24.3%	2
55089	Goodhue County 96.8% Dakota County 3.2%	3.2%	2
55092	Anoka County 64.9% Chisago County 35.1%	35.1%	2
55110	Ramsey County 65.3% Washington County 30.8% Anoka County 4.0%	34.7%	3
55118	Dakota County 99.8% Ramsey County 0.2%	0.2%	2
55125	Washington County 100.0% Ramsey County under 0.1%	under 0.1%	2
55126	Ramsey County 96.3% Anoka County 3.7%	3.7%	2
55312	McLeod County 99.3% Sibley County 0.8%	0.8%	2
55313	Wright County 100.0% Hennepin County under 0.1%	under 0.1%	2
55314	Renville County 74.4% Sibley County 25.6%	25.6%	2
55317	Carver County 98.2% Hennepin County 1.8%	1.8%	2
55320	Stearns County 59.4% Wright County 40.6%	40.6%	2
55328	Wright County 86.6% Carver County 6.8% Hennepin County 6.7%	13.4%	3
55329	Meeker County 69.2% Stearns County 30.8%	30.8%	2
55330	Sherburne County 62.1% Anoka County 21.1% Wright County 16.8%	37.9%	3
55331	Hennepin County 66.8% Carver County 33.2%	33.2%	2
55332	Renville County 81.8% Nicollet County 16.6% Sibley County 1.6%	18.2%	3
55333	Renville County 91.9% Brown County 4.3% Redwood County 3.8%	8.1%	3
55334	Sibley County 87.9% Nicollet County 11.4% McLeod County 0.7%	12.1%	3
55335	Sibley County 83.7% Nicollet County 16.3%	16.3%	2
55336	McLeod County 81.2% Sibley County 18.9%	18.9%	2
55339	Carver County 64.9% Sibley County 31.1% McLeod County 4.0%	35.1%	3
55341	Wright County 57.9% Hennepin County 42.1%	42.1%	2
55342	Renville County 99.7% Meeker County 0.3%	0.3%	2
55350	McLeod County 86.5% Meeker County 11.3% Renville County 2.2%	13.5%	3
55353	Stearns County 66.1% Meeker County 33.9%	33.9%	2
55363	Wright County 99.2% Carver County 0.8%	0.8%	2
55371	Mille Lacs County 41.6% Sherburne County 29.8% Isanti County 26.2% Benton County 2.3%	58.4%	4
55373	Hennepin County 75.5% Wright County 24.4%	24.4%	2
55374	Hennepin County 95.4% Wright County 4.6%	4.6%	2
55375	Hennepin County 65.7% Carver County 34.3%	34.3%	2
55382	Stearns County 50.9% Wright County 36.8% Meeker County 12.4%	49.1%	3
55385	McLeod County 52.2% Renville County 29.7% Sibley County 18.1%	47.8%	3
55387	Carver County 99.2% Hennepin County 0.8%	0.8%	2
55388	Carver County 79.4% Wright County 15.5% Hennepin County 5.1%	20.6%	3
55389	Meeker County 62.7% Stearns County 37.3%	37.3%	2
55395	McLeod County 76.1% Wright County 12.3% Carver County 11.6%	23.9%	3
55396	Sibley County 99.2% McLeod County 0.8%	0.8%	2
55397	Carver County 96.5% McLeod County 3.5%	3.5%	2
55398	Sherburne County 82.6% Isanti County 17.4%	17.4%	2
55418	Hennepin County 99.8% Ramsey County 0.2%	0.2%	2
55421	Anoka County 92.4% Ramsey County 7.2% Hennepin County 0.4%	7.6%	3
55432	Anoka County 99.5% Ramsey County 0.5%	0.5%	2
55449	Anoka County 99.2% Ramsey County 0.8%	0.8%	2
55602	St. Louis County 92.3% Lake County 7.7%	7.7%	2
55616	Lake County 91.0% St. Louis County 9.0%	9.0%	2
55720	Carlton County 58.6% St. Louis County 41.4%	41.4%	2
55723	St. Louis County 72.0% Itasca County 28.1%	28.1%	2
55731	Lake County 50.2% St. Louis County 49.8%	49.8%	2
55733	Carlton County 99.2% St. Louis County 0.8%	0.8%	2
55735	Pine County 65.9% Aitkin County 34.1%	34.1%	2
55736	St. Louis County 92.9% Itasca County 7.1%	7.1%	2
55746	St. Louis County 92.7% Itasca County 7.3%	7.3%	2
55748	Aitkin County 64.5% Itasca County 35.5%	35.5%	2
55749	Carlton County 80.5% Pine County 19.5%	19.5%	2
55752	Aitkin County 98.4% Itasca County 1.6%	1.6%	2
55756	Pine County 85.0% Carlton County 15.0%	15.0%	2
55767	Carlton County 95.8% Pine County 4.3%	4.3%	2
55771	St. Louis County 71.9% Koochiching County 28.1%	28.1%	2
55772	Koochiching County 93.2% St. Louis County 6.8%	6.8%	2
55781	Itasca County 56.2% St. Louis County 43.8%	43.8%	2
55783	Pine County 60.8% Aitkin County 27.0% Carlton County 12.2%	39.2%	3
55785	Aitkin County 74.2% Cass County 25.8%	25.8%	2
55787	Aitkin County 88.7% Carlton County 11.3%	11.3%	2
55796	Lake County 55.6% St. Louis County 44.4%	44.4%	2
55798	Carlton County 73.0% St. Louis County 17.0% Aitkin County 10.0%	26.9%	3
55810	St. Louis County 93.9% Carlton County 6.1%	6.1%	2
55906	Olmsted County 92.0% Wabasha County 8.0%	8.0%	2
55910	Winona County 87.8% Wabasha County 12.2%	12.2%	2
55912	Mower County 75.7% Freeborn County 24.3%	24.3%	2
55917	Steele County 44.1% Dodge County 27.6% Freeborn County 16.1% Mower County 12.2%	55.9%	4
55923	Fillmore County 50.4% Olmsted County 46.4% Winona County 3.3%	49.6%	3
55924	Dodge County 70.5% Steele County 29.6%	29.6%	2
55932	Olmsted County 52.2% Wabasha County 47.8%	47.8%	2
55940	Dodge County 90.1% Olmsted County 8.6% Mower County 1.3%	9.9%	3
55943	Houston County 80.4% Winona County 19.6%	19.6%	2
55944	Dodge County 93.8% Olmsted County 6.3%	6.3%	2
55946	Goodhue County 76.1% Rice County 16.1% Dodge County 5.6% Steele County 2.2%	23.9%	4
55947	Houston County 63.5% Winona County 36.5%	36.5%	2
55951	Mower County 65.3% Fillmore County 34.7%	34.7%	2
55953	Mower County 93.2% Freeborn County 6.8%	6.8%	2
55954	Fillmore County 87.6% Houston County 12.4%	12.4%	2
55955	Dodge County 96.9% Olmsted County 3.1%	3.1%	2
55956	Wabasha County 71.3% Goodhue County 26.4% Olmsted County 2.3%	28.7%	3
55960	Olmsted County 100.0% Wabasha County under 0.1%	under 0.1%	2
55961	Mower County 74.2% Fillmore County 25.8%	25.8%	2
55962	Fillmore County 95.5% Winona County 4.5%	4.5%	2
55963	Goodhue County 46.1% Olmsted County 34.2% Dodge County 19.7%	53.9%	3
55964	Wabasha County 79.0% Olmsted County 10.6% Winona County 10.4%	21.0%	3
55971	Fillmore County 43.7% Winona County 38.1% Houston County 18.2%	56.3%	3
55972	Winona County 73.7% Olmsted County 26.3%	26.3%	2
55973	Mower County 96.6% Dodge County 3.4%	3.4%	2
55974	Houston County 96.0% Fillmore County 4.0%	4.0%	2
55975	Fillmore County 88.1% Mower County 11.9%	11.9%	2
55976	Olmsted County 83.1% Fillmore County 15.4% Mower County 1.5%	16.9%	3
55979	Winona County 92.3% Fillmore County 7.7%	7.7%	2
55985	Dodge County 89.1% Goodhue County 6.5% Steele County 4.4%	10.9%	3
55991	Wabasha County 99.1% Olmsted County 0.9%	0.9%	2
56003	Nicollet County 99.8% Blue Earth County 0.3%	0.3%	2
56009	Freeborn County 98.4% Faribault County 1.6%	1.6%	2
56011	Scott County 67.3% Sibley County 16.6% Carver County 9.3% Le Sueur County 6.7%	32.7%	4
56013	Faribault County 90.0% Martin County 10.0%	10.0%	2
56019	Brown County 58.5% Cottonwood County 33.5% Watonwan County 8.0%	41.5%	3
56026	Steele County 61.4% Freeborn County 37.9% Waseca County 0.7%	38.6%	3
56027	Faribault County 77.1% Kossuth County, IA 13.4% Martin County 9.5%	22.9%	3
56028	Le Sueur County 89.8% Waseca County 10.2%	10.2%	2
56039	Martin County 98.1% Faribault County 1.9%	1.9%	2
56041	Brown County 99.0% Blue Earth County 1.0%	1.0%	2
56044	Sibley County 83.2% Le Sueur County 16.8%	16.8%	2
56048	Waseca County 75.8% Blue Earth County 24.3%	24.3%	2
56050	Le Sueur County 89.8% Blue Earth County 10.2%	10.2%	2
56052	Le Sueur County 72.4% Rice County 27.6%	27.6%	2
56054	Nicollet County 83.5% Sibley County 16.5%	16.5%	2
56058	Le Sueur County 63.1% Sibley County 25.6% Nicollet County 11.4%	36.9%	3
56060	Watonwan County 94.1% Blue Earth County 5.9%	5.9%	2
56062	Watonwan County 64.1% Blue Earth County 28.7% Brown County 7.2%	35.9%	3
56063	Blue Earth County 59.9% Le Sueur County 33.7% Waseca County 6.4%	40.1%	3
56065	Blue Earth County 96.9% Faribault County 2.2% Waseca County 0.9%	3.1%	3
56068	Blue Earth County 41.4% Faribault County 33.0% Waseca County 25.6%	58.6%	3
56069	Le Sueur County 64.5% Rice County 35.5%	35.5%	2
56071	Le Sueur County 46.9% Scott County 41.3% Rice County 11.8%	53.1%	3
56072	Waseca County 77.9% Steele County 14.0% Freeborn County 7.8% Faribault County 0.3%	22.1%	4
56073	Brown County 55.6% Nicollet County 38.4% Blue Earth County 6.0%	44.4%	3
56078	Blue Earth County 50.2% Waseca County 49.8%	49.8%	2
56081	Watonwan County 95.9% Brown County 4.1%	4.1%	2
56082	Nicollet County 87.1% Le Sueur County 12.9%	12.9%	2
56083	Redwood County 45.2% Cottonwood County 34.7% Brown County 20.1%	54.8%	3
56085	Brown County 95.7% Redwood County 4.3%	4.3%	2
56087	Brown County 75.0% Redwood County 25.0%	25.0%	2
56088	Martin County 68.2% Watonwan County 23.9% Blue Earth County 7.9%	31.8%	3
56093	Waseca County 93.2% Steele County 6.1% Rice County 0.7%	6.8%	3
56096	Le Sueur County 79.7% Rice County 10.6% Waseca County 9.7%	20.3%	3
56097	Faribault County 81.8% Freeborn County 15.5% Waseca County 2.8%	18.2%	3
56098	Faribault County 80.4% Martin County 19.6%	19.6%	2
56101	Cottonwood County 63.2% Jackson County 36.8%	36.8%	2
56111	Jackson County 93.6% Martin County 6.4%	6.4%	2
56113	Lincoln County 93.8% Lyon County 6.2%	6.2%	2
56115	Lyon County 62.5% Murray County 37.5%	37.5%	2
56118	Cottonwood County 90.7% Jackson County 9.3%	9.3%	2
56119	Nobles County 58.9% Jackson County 41.1%	41.1%	2
56122	Murray County 90.2% Nobles County 9.8%	9.8%	2
56128	Pipestone County 58.8% Rock County 19.7% Murray County 12.3% Nobles County 9.2%	41.2%	4
56129	Nobles County 52.8% Rock County 47.2%	47.2%	2
56131	Murray County 45.7% Nobles County 39.7% Cottonwood County 14.2% Jackson County 0.5%	54.3%	4
56132	Lyon County 56.3% Murray County 43.7%	43.7%	2
56136	Lincoln County 78.9% Brookings County, SD 21.1%	21.1%	2
56137	Jackson County 64.4% Cottonwood County 35.6%	35.6%	2
56141	Murray County 91.7% Nobles County 8.3%	8.3%	2
56144	Rock County 48.1% Pipestone County 38.8% Moody County, SD 13.1%	51.9%	3
56147	Rock County 53.5% Nobles County 46.5%	46.5%	2
56149	Lincoln County 95.7% Pipestone County 4.3%	4.3%	2
56152	Redwood County 62.5% Cottonwood County 37.5%	37.5%	2
56158	Rock County 75.6% Nobles County 24.4%	24.4%	2
56159	Cottonwood County 86.0% Jackson County 14.0%	14.0%	2
56160	Martin County 50.2% Jackson County 29.7% Watonwan County 20.1%	49.8%	3
56162	Martin County 64.2% Watonwan County 35.8%	35.8%	2
56164	Pipestone County 87.3% Lincoln County 9.3% Moody County, SD 3.4%	12.7%	3
56166	Redwood County 51.4% Cottonwood County 48.6%	48.6%	2
56167	Jackson County 79.9% Nobles County 20.1%	20.1%	2
56170	Pipestone County 50.0% Murray County 38.0% Lyon County 7.2% Lincoln County 4.8%	50.0%	4
56175	Lyon County 55.7% Redwood County 22.7% Murray County 21.6%	44.3%	3
56178	Lincoln County 85.5% Lyon County 14.4%	14.4%	2
56180	Redwood County 71.3% Murray County 15.9% Cottonwood County 12.7%	28.7%	3
56183	Cottonwood County 73.6% Murray County 26.4%	26.4%	2
56186	Pipestone County 60.6% Murray County 39.4%	39.4%	2
56187	Nobles County 92.4% Jackson County 7.6%	7.6%	2
56207	Stevens County 94.0% Swift County 6.0%	6.0%	2
56208	Swift County 82.1% Lac qui Parle County 11.1% Big Stone County 4.6% Chippewa County 2.2%	17.9%	4
56209	Kandiyohi County 79.9% Meeker County 20.1%	20.1%	2
56211	Big Stone County 56.4% Traverse County 43.6%	43.6%	2
56214	Redwood County 84.5% Yellow Medicine County 15.5%	15.5%	2
56215	Swift County 92.5% Pope County 7.5%	7.5%	2
56218	Lac qui Parle County 61.6% Yellow Medicine County 38.4%	38.4%	2
56219	Roberts County, SD 55.2% Traverse County 36.1% Big Stone County 8.7%	44.8%	3
56220	Yellow Medicine County 68.1% Lac qui Parle County 19.3% Lincoln County 12.3% Deuel County, SD 0.2%	31.9%	4
56221	Stevens County 87.8% Big Stone County 10.1% Traverse County 2.1%	12.2%	3
56226	Pope County 50.6% Swift County 49.4%	49.4%	2
56228	Meeker County 92.9% Renville County 7.1%	7.1%	2
56229	Lyon County 78.0% Yellow Medicine County 22.0%	22.0%	2
56236	Traverse County 93.9% Big Stone County 6.1%	6.1%	2
56240	Big Stone County 63.8% Traverse County 36.2%	36.2%	2
56241	Yellow Medicine County 68.0% Chippewa County 22.3% Renville County 9.8%	32.0%	3
56244	Stevens County 60.2% Pope County 33.3% Swift County 6.5%	39.8%	3
56248	Grant County 68.3% Stevens County 17.8% Traverse County 13.9%	31.7%	3
56252	Swift County 59.6% Chippewa County 32.2% Kandiyohi County 8.2%	40.4%	3
56257	Lac qui Parle County 95.0% Deuel County, SD 5.0%	5.0%	2
56258	Lyon County 96.0% Redwood County 4.0%	4.0%	2
56260	Chippewa County 87.3% Renville County 12.7%	12.7%	2
56262	Chippewa County 80.3% Swift County 19.7%	19.7%	2
56263	Redwood County 84.0% Lyon County 16.0%	16.0%	2
56264	Lyon County 70.0% Yellow Medicine County 25.7% Lincoln County 4.3%	30.0%	3
56265	Chippewa County 75.8% Lac qui Parle County 18.1% Yellow Medicine County 6.0%	24.2%	3
56266	Redwood County 75.7% Brown County 24.3%	24.3%	2
56270	Renville County 63.2% Redwood County 36.8%	36.8%	2
56271	Swift County 82.1% Chippewa County 17.9%	17.9%	2
56274	Grant County 62.5% Traverse County 37.5%	37.5%	2
56276	Big Stone County 50.7% Lac qui Parle County 49.3%	49.3%	2
56278	Big Stone County 89.4% Lac qui Parle County 10.6%	10.6%	2
56280	Lincoln County 50.4% Yellow Medicine County 49.6%	49.6%	2
56282	Kandiyohi County 67.2% Chippewa County 32.8%	32.8%	2
56283	Redwood County 83.9% Renville County 16.1%	16.1%	2
56284	Renville County 87.9% Kandiyohi County 9.0% Redwood County 3.1%	12.1%	3
56289	Kandiyohi County 69.5% Swift County 30.4%	30.4%	2
56291	Yellow Medicine County 42.4% Lyon County 31.4% Lincoln County 26.2%	57.6%	3
56292	Redwood County 96.5% Yellow Medicine County 3.5%	3.5%	2
56297	Yellow Medicine County 93.9% Redwood County 6.1%	6.1%	2
56304	Sherburne County 86.7% Benton County 13.3%	13.3%	2
56307	Stearns County 99.3% Morrison County 0.7%	0.7%	2
56308	Douglas County 98.6% Pope County 1.4%	1.4%	2
56309	Grant County 56.1% Otter Tail County 37.9% Douglas County 6.0%	43.9%	3
56312	Stearns County 74.3% Kandiyohi County 25.7%	25.7%	2
56314	Morrison County 90.2% Stearns County 9.8%	9.8%	2
56315	Douglas County 97.2% Otter Tail County 2.8%	2.8%	2
56316	Pope County 51.7% Stearns County 36.8% Kandiyohi County 11.4%	48.3%	3
56318	Todd County 68.0% Morrison County 31.9%	31.9%	2
56319	Douglas County 80.7% Todd County 19.3%	19.3%	2
56323	Pope County 81.8% Stevens County 18.1%	18.1%	2
56324	Otter Tail County 98.0% Grant County 2.0%	2.0%	2
56326	Douglas County 88.3% Otter Tail County 9.4% Grant County 2.3%	11.7%	3
56327	Pope County 56.2% Douglas County 43.8%	43.8%	2
56329	Benton County 88.0% Morrison County 11.6% Sherburne County 0.4%	12.0%	3
56330	Mille Lacs County 62.5% Benton County 37.5%	37.5%	2
56331	Stearns County 98.9% Morrison County 1.1%	1.1%	2
56334	Pope County 99.3% Douglas County 0.7%	0.7%	2
56336	Todd County 97.2% Stearns County 2.8%	2.8%	2
56338	Morrison County 95.8% Crow Wing County 4.2%	4.2%	2
56339	Grant County 86.0% Douglas County 14.0%	14.0%	2
56340	Stearns County 71.5% Morrison County 28.5%	28.5%	2
56342	Aitkin County 40.2% Kanabec County 38.6% Mille Lacs County 21.1%	59.8%	3
56343	Douglas County 65.7% Pope County 17.7% Stevens County 10.9% Grant County 5.7%	34.3%	4
56347	Todd County 96.6% Morrison County 3.4%	3.4%	2
56349	Pope County 87.8% Douglas County 12.3%	12.3%	2
56353	Mille Lacs County 94.5% Isanti County 2.7% Kanabec County 2.6% Morrison County 0.1%	5.5%	4
56357	Benton County 79.4% Mille Lacs County 20.6%	20.6%	2
56358	Kanabec County 82.4% Mille Lacs County 13.2% Isanti County 4.4%	17.6%	3
56360	Todd County 53.4% Douglas County 46.6%	46.6%	2
56361	Otter Tail County 83.3% Douglas County 16.7%	16.7%	2
56362	Stearns County 76.1% Meeker County 13.8% Kandiyohi County 10.1%	23.9%	3
56364	Morrison County 95.4% Crow Wing County 4.6%	4.6%	2
56367	Benton County 82.5% Stearns County 17.5%	17.5%	2
56373	Morrison County 90.6% Benton County 9.4%	9.4%	2
56377	Stearns County 96.6% Benton County 3.4%	3.4%	2
56378	Stearns County 72.2% Todd County 27.8%	27.8%	2
56379	Benton County 99.5% Sherburne County 0.5%	0.5%	2
56382	Morrison County 75.8% Todd County 24.2%	24.2%	2
56385	Pope County 82.8% Stearns County 14.5% Douglas County 2.7%	17.2%	3
56401	Crow Wing County 94.5% Cass County 5.5%	5.5%	2
56431	Aitkin County 84.7% Crow Wing County 15.3%	15.3%	2
56433	Hubbard County 70.4% Cass County 29.6%	29.6%	2
56434	Todd County 83.7% Wadena County 16.3%	16.3%	2
56435	Cass County 99.3% Crow Wing County 0.7%	0.7%	2
56437	Todd County 88.5% Otter Tail County 11.5%	11.5%	2
56443	Morrison County 69.1% Todd County 30.9%	30.9%	2
56446	Todd County 83.0% Otter Tail County 12.3% Douglas County 4.7%	17.0%	3
56448	Crow Wing County 63.1% Cass County 36.9%	36.9%	2
56449	Crow Wing County 66.6% Morrison County 33.4%	33.4%	2
56450	Crow Wing County 92.4% Mille Lacs County 7.6%	7.6%	2
56453	Otter Tail County 59.0% Todd County 41.0%	41.0%	2
56461	Hubbard County 97.4% Cass County 2.6%	2.6%	2
56464	Wadena County 46.7% Becker County 34.4% Hubbard County 13.9% Otter Tail County 4.2% Cass County 0.9%	53.3%	5
56466	Cass County 71.1% Morrison County 18.1% Todd County 10.8%	28.9%	3
56468	Crow Wing County 53.2% Cass County 46.8%	46.8%	2
56470	Hubbard County 66.2% Becker County 23.1% Clearwater County 10.0% Wadena County 0.6%	33.8%	4
56472	Cass County 62.6% Crow Wing County 37.4%	37.4%	2
56473	Cass County 80.7% Morrison County 19.3%	19.3%	2
56474	Cass County 71.9% Crow Wing County 28.1%	28.1%	2
56477	Wadena County 67.5% Otter Tail County 21.1% Cass County 11.4%	32.5%	3
56479	Todd County 36.2% Wadena County 31.9% Cass County 31.9%	63.8%	3
56481	Wadena County 74.1% Todd County 18.2% Cass County 7.6%	25.9%	3
56482	Wadena County 54.4% Otter Tail County 44.5% Todd County 1.1%	45.6%	3
56484	Cass County 99.6% Hubbard County 0.4%	0.4%	2
56501	Becker County 93.8% Otter Tail County 6.2%	6.2%	2
56514	Clay County 61.8% Wilkin County 35.8% Otter Tail County 2.4%	38.2%	3
56516	Mahnomen County 88.0% Norman County 12.0%	12.0%	2
56517	Polk County 95.6% Norman County 4.4%	4.4%	2
56519	Norman County 60.1% Clay County 39.9%	39.9%	2
56522	Wilkin County 87.6% Otter Tail County 12.4%	12.4%	2
56535	Polk County 87.3% Red Lake County 12.8%	12.8%	2
56540	Polk County 73.5% Norman County 26.5%	26.5%	2
56542	Polk County 80.5% Mahnomen County 19.5%	19.5%	2
56544	Becker County 79.1% Otter Tail County 20.9%	20.9%	2
56552	Clay County 73.2% Becker County 26.8%	26.8%	2
56554	Becker County 92.2% Clay County 7.8%	7.8%	2
56557	Mahnomen County 93.4% Norman County 4.0% Clearwater County 2.6%	6.6%	3
56560	Clay County 98.8% Wilkin County 1.3%	1.3%	2
56565	Wilkin County 75.0% Grant County 25.0%	25.0%	2
56568	Polk County 93.3% Norman County 6.7%	6.7%	2
56572	Otter Tail County 91.2% Clay County 4.6% Becker County 3.6% Wilkin County 0.6%	8.8%	4
56574	Norman County 98.6% Clay County 1.4%	1.4%	2
56579	Wilkin County 73.4% Otter Tail County 26.6%	26.6%	2
56583	Traverse County 71.7% Wilkin County 28.3%	28.3%	2
56585	Clay County 66.8% Becker County 32.5% Norman County 0.8%	33.2%	3
56589	Mahnomen County 61.6% Becker County 24.2% Clearwater County 14.2%	38.4%	3
56590	Grant County 99.4% Otter Tail County 0.6%	0.6%	2
56592	Polk County 89.8% Mahnomen County 10.2%	10.2%	2
56601	Beltrami County 83.2% Hubbard County 16.8%	16.8%	2
56621	Clearwater County 98.0% Polk County 1.7% Mahnomen County 0.3%	2.0%	3
56623	Lake of the Woods County 82.7% Koochiching County 17.3%	17.3%	2
56630	Beltrami County 70.8% Itasca County 29.2%	29.2%	2
56633	Cass County 81.7% Beltrami County 10.3% Hubbard County 8.1%	18.3%	3
56636	Itasca County 72.4% Cass County 27.6%	27.6%	2
56639	Itasca County 51.9% Koochiching County 48.1%	48.1%	2
56644	Clearwater County 94.9% Polk County 5.1%	5.1%	2
56646	Polk County 91.5% Clearwater County 8.5%	8.5%	2
56649	Koochiching County 62.4% St. Louis County 37.6%	37.6%	2
56651	Mahnomen County 82.5% Polk County 17.5%	17.5%	2
56652	Clearwater County 88.0% Beltrami County 12.0%	12.0%	2
56661	Koochiching County 50.7% Itasca County 42.8% Beltrami County 6.6%	49.3%	3
56669	Koochiching County 92.4% St. Louis County 7.6%	7.6%	2
56671	Clearwater County 58.4% Beltrami County 41.6%	41.6%	2
56673	Lake of the Woods County 81.2% Roseau County 18.8%	18.8%	2
56676	Clearwater County 62.2% Beltrami County 37.8%	37.8%	2
56678	Beltrami County 52.6% Hubbard County 42.8% Clearwater County 4.6%	47.4%	3
56684	Polk County 62.1% Pennington County 33.0% Red Lake County 4.9%	37.9%	3
56701	Pennington County 74.4% Marshall County 23.8% Polk County 1.9%	25.6%	3
56710	Marshall County 81.3% Polk County 18.7%	18.7%	2
56715	Red Lake County 95.9% Polk County 4.1%	4.1%	2
56716	Polk County 98.5% Red Lake County 1.5%	1.5%	2
56724	Marshall County 98.4% Roseau County 1.6%	1.6%	2
56725	Pennington County 42.5% Marshall County 30.1% Beltrami County 27.4%	57.5%	3
56727	Beltrami County 85.3% Marshall County 14.7%	14.7%	2
56732	Kittson County 70.5% Marshall County 18.1% Roseau County 11.4%	29.5%	3
56735	Kittson County 81.3% Roseau County 18.7%	18.7%	2
56736	Polk County 84.5% Red Lake County 15.5%	15.5%	2
56742	Red Lake County 68.8% Pennington County 27.1% Polk County 4.1%	31.2%	3
56744	Marshall County 49.9% Polk County 23.6% Walsh County, ND 22.8% Grand Forks County, ND 3.7%	50.1%	4
56748	Red Lake County 80.5% Pennington County 19.5%	19.5%	2
56750	Red Lake County 79.3% Pennington County 13.9% Polk County 6.8%	20.7%	3
56754	Pennington County 91.0% Red Lake County 9.0%	9.0%	2
56757	Marshall County 95.0% Kittson County 5.0%	5.0%	2
56759	Roseau County 64.8% Marshall County 35.1%	35.1%	2
56762	Polk County 51.8% Marshall County 48.2%	48.2%	2
57026	Brookings County, SD 56.8% Moody County, SD 20.0% Lincoln County 13.6% Pipestone County 9.7%	43.2%	4
57030	Minnehaha County, SD 89.9% Rock County 10.1%	10.1%	2
57068	Minnehaha County, SD 93.2% Rock County 6.8%	6.8%	2
58030	Richland County, ND 98.7% Wilkin County 1.3%	1.3%	2
58225	Pembina County, ND 65.9% Walsh County, ND 22.8% Kittson County 11.4%	34.1%	3

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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