ZIP codes and county lines in South Carolina

165 of the 424 ZIP code areas in South Carolina, or 38.9%, 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: 424
In more than one county: 165
At least 5% in a second county: 126
Cross a state line: 0

How South Carolina compares

South Carolina ranks 16 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 46 of its counties have at least one split ZIP code area along an edge.

Counties with the most split ZIP code areas

Greenville County: 14 ZIP codes shared with another county
Orangeburg County: 14 ZIP codes shared with another county
Anderson County: 13 ZIP codes shared with another county
Dorchester County: 13 ZIP codes shared with another county
Charleston County: 12 ZIP codes shared with another county

Every split ZIP code area in South Carolina

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
29001	Clarendon County 89.0% Sumter County 11.0%	11.0%	2
29006	Saluda County 39.8% Aiken County 38.0% Lexington County 22.1%	60.2%	3
29009	Kershaw County 91.3% Chesterfield County 6.1% Lee County 2.6%	8.7%	3
29010	Lee County 99.3% Kershaw County 0.7%	0.7%	2
29014	Fairfield County 58.1% Chester County 41.9%	41.9%	2
29016	Richland County 90.4% Fairfield County 9.6%	9.6%	2
29018	Orangeburg County 97.5% Dorchester County 2.5%	2.5%	2
29020	Kershaw County 94.1% Lee County 5.9%	5.9%	2
29030	Calhoun County 78.7% Orangeburg County 21.3%	21.3%	2
29031	Chester County 50.1% Union County 44.1% Fairfield County 5.7%	49.9%	3
29032	Kershaw County 78.8% Lee County 21.2%	21.2%	2
29036	Lexington County 67.5% Richland County 27.8% Newberry County 4.7%	32.5%	3
29037	Newberry County 56.0% Saluda County 38.9% Laurens County 5.0%	44.0%	3
29040	Sumter County 61.4% Lee County 38.6%	38.6%	2
29045	Kershaw County 64.7% Richland County 33.3% Fairfield County 2.0%	35.3%	3
29047	Orangeburg County 52.2% Calhoun County 47.8%	47.8%	2
29051	Clarendon County 53.0% Sumter County 47.0%	47.0%	2
29053	Lexington County 71.1% Calhoun County 28.9%	28.9%	2
29055	Chester County 67.4% Fairfield County 32.6%	32.6%	2
29056	Williamsburg County 88.6% Clarendon County 11.4%	11.4%	2
29058	Lancaster County 90.0% Kershaw County 10.1%	10.1%	2
29059	Orangeburg County 95.2% Berkeley County 4.8%	4.8%	2
29063	Richland County 97.0% Lexington County 3.0%	3.0%	2
29067	Lancaster County 54.1% Kershaw County 45.9%	45.9%	2
29069	Darlington County 78.4% Lee County 21.6%	21.6%	2
29070	Lexington County 78.3% Saluda County 21.7%	21.7%	2
29075	Newberry County 66.7% Richland County 26.6% Lexington County 6.7%	33.3%	3
29078	Kershaw County 88.5% Richland County 11.5%	11.5%	2
29080	Lee County 55.7% Sumter County 44.3%	44.3%	2
29081	Bamberg County 85.4% Colleton County 14.6%	14.6%	2
29082	Colleton County 96.8% Bamberg County 3.2%	3.2%	2
29101	Chesterfield County 87.1% Darlington County 12.9%	12.9%	2
29104	Lee County 51.6% Sumter County 48.4%	48.4%	2
29105	Aiken County 76.0% Saluda County 24.0%	24.0%	2
29111	Clarendon County 88.3% Williamsburg County 11.7%	11.7%	2
29112	Orangeburg County 88.1% Calhoun County 9.0% Lexington County 2.9%	11.9%	3
29114	Florence County 58.9% Sumter County 39.4% Clarendon County 1.7%	41.1%	3
29118	Orangeburg County 92.8% Calhoun County 7.2%	7.2%	2
29125	Sumter County 52.0% Clarendon County 48.0%	48.0%	2
29127	Newberry County 94.6% Saluda County 5.4%	5.4%	2
29128	Sumter County 64.8% Kershaw County 23.6% Lee County 11.7%	35.2%	3
29129	Aiken County 55.2% Saluda County 32.7% Edgefield County 12.1%	44.8%	3
29130	Fairfield County 83.7% Kershaw County 15.2% Richland County 1.2%	16.3%	3
29135	Calhoun County 98.9% Orangeburg County 1.1%	1.1%	2
29137	Aiken County 83.0% Orangeburg County 17.0%	17.0%	2
29138	Saluda County 97.0% Greenwood County 2.6% Edgefield County 0.4%	3.0%	3
29146	Orangeburg County 66.6% Aiken County 33.4%	33.4%	2
29153	Sumter County 87.3% Lee County 12.7%	12.7%	2
29160	Lexington County 61.8% Calhoun County 37.8% Orangeburg County 0.4%	38.2%	3
29161	Florence County 75.8% Darlington County 24.3%	24.3%	2
29162	Clarendon County 96.8% Sumter County 3.2%	3.2%	2
29178	Newberry County 50.5% Union County 36.7% Laurens County 12.8%	49.5%	3
29180	Fairfield County 95.6% Richland County 4.4%	4.4%	2
29210	Richland County 69.7% Lexington County 30.3%	30.3%	2
29212	Lexington County 69.2% Richland County 30.8%	30.8%	2
29307	Spartanburg County 89.2% Cherokee County 10.8%	10.8%	2
29322	Spartanburg County 97.7% Greenville County 2.3%	2.3%	2
29323	Spartanburg County 87.0% Cherokee County 13.1%	13.1%	2
29330	Cherokee County 52.4% Spartanburg County 47.6%	47.6%	2
29332	Laurens County 96.5% Newberry County 3.5%	3.5%	2
29335	Spartanburg County 66.8% Laurens County 18.8% Union County 14.4%	33.2%	3
29355	Newberry County 73.2% Laurens County 26.9%	26.9%	2
29356	Greenville County 75.8% Spartanburg County 24.2%	24.2%	2
29372	Cherokee County 42.3% Spartanburg County 31.9% Union County 25.9%	57.7%	3
29374	Spartanburg County 90.3% Union County 9.7%	9.7%	2
29388	Spartanburg County 94.3% Laurens County 5.7%	5.7%	2
29406	Charleston County 97.1% Berkeley County 2.9%	2.9%	2
29410	Berkeley County 100.0% Charleston County under 0.1%	under 0.1%	2
29414	Charleston County 82.0% Dorchester County 18.1%	18.1%	2
29418	Charleston County 77.5% Dorchester County 22.5%	22.5%	2
29420	Dorchester County 59.5% Charleston County 40.5%	40.5%	2
29426	Charleston County 83.5% Dorchester County 16.5%	16.5%	2
29432	Orangeburg County 60.5% Bamberg County 32.5% Dorchester County 7.0%	39.5%	3
29436	Berkeley County 93.6% Orangeburg County 6.4%	6.4%	2
29438	Charleston County 90.8% Colleton County 9.2%	9.2%	2
29440	Georgetown County 99.4% Williamsburg County 0.6%	0.6%	2
29450	Berkeley County 94.4% Charleston County 5.6%	5.6%	2
29456	Charleston County 46.2% Berkeley County 28.7% Dorchester County 25.1%	53.8%	3
29470	Charleston County 66.2% Dorchester County 33.8%	33.8%	2
29471	Dorchester County 97.2% Orangeburg County 2.8%	2.8%	2
29472	Dorchester County 59.8% Berkeley County 32.4% Colleton County 7.9%	40.3%	3
29477	Dorchester County 99.1% Orangeburg County 0.9%	0.9%	2
29481	Colleton County 84.6% Bamberg County 15.4%	15.4%	2
29483	Dorchester County 83.4% Berkeley County 16.3% Charleston County 0.3%	16.6%	3
29485	Dorchester County 93.5% Charleston County 6.5%	6.5%	2
29501	Florence County 85.5% Darlington County 14.5%	14.5%	2
29506	Florence County 98.1% Darlington County 1.9%	1.9%	2
29510	Williamsburg County 65.0% Georgetown County 35.0%	35.0%	2
29518	Williamsburg County 99.5% Clarendon County 0.5%	0.5%	2
29520	Chesterfield County 100.0% Marlboro County under 0.1%	under 0.1%	2
29525	Marlboro County 94.6% Dillon County 5.4%	5.4%	2
29550	Darlington County 81.2% Chesterfield County 16.6% Lee County 2.2%	18.8%	3
29554	Georgetown County 51.7% Williamsburg County 47.5% Florence County 0.8%	48.3%	3
29555	Florence County 92.5% Williamsburg County 7.5%	7.5%	2
29560	Florence County 48.1% Williamsburg County 42.0% Clarendon County 9.9%	51.9%	3
29565	Dillon County 92.4% Marion County 4.5% Marlboro County 3.1%	7.6%	3
29571	Marion County 99.6% Dillon County 0.4%	0.4%	2
29574	Marion County 99.5% Dillon County 0.5%	0.5%	2
29576	Horry County 55.5% Georgetown County 44.5%	44.5%	2
29581	Horry County 73.6% Dillon County 15.5% Marion County 10.9%	26.4%	3
29592	Marion County 57.3% Dillon County 42.7%	42.7%	2
29593	Darlington County 64.0% Chesterfield County 36.0%	36.0%	2
29611	Greenville County 86.0% Anderson County 11.7% Pickens County 2.3%	14.0%	3
29620	Abbeville County 96.0% McCormick County 4.0%	4.0%	2
29627	Anderson County 83.0% Greenville County 15.6% Abbeville County 1.4%	17.0%	3
29628	Abbeville County 75.3% McCormick County 24.7%	24.7%	2
29630	Pickens County 87.7% Anderson County 12.3%	12.3%	2
29631	Pickens County 99.5% Anderson County 0.5%	0.5%	2
29634	Pickens County 98.8% Oconee County 1.2%	1.2%	2
29635	Greenville County 82.2% Pickens County 17.8%	17.8%	2
29638	Abbeville County 83.9% Greenwood County 16.1%	16.1%	2
29642	Anderson County 55.4% Pickens County 44.6%	44.6%	2
29643	Oconee County 80.2% Anderson County 19.8%	19.8%	2
29644	Greenville County 50.1% Laurens County 49.9%	49.9%	2
29645	Laurens County 99.9% Greenville County 0.1%	0.1%	2
29646	Greenwood County 96.0% Abbeville County 4.0%	4.0%	2
29649	Greenwood County 97.3% Abbeville County 2.7%	2.7%	2
29650	Greenville County 98.7% Spartanburg County 1.3%	1.3%	2
29651	Greenville County 55.5% Spartanburg County 44.5%	44.5%	2
29653	Greenwood County 92.6% Abbeville County 7.4%	7.4%	2
29654	Anderson County 36.7% Abbeville County 29.5% Greenville County 23.4% Laurens County 10.3%	63.3%	4
29655	Abbeville County 52.6% Anderson County 47.4%	47.4%	2
29657	Pickens County 76.1% Anderson County 23.9%	23.9%	2
29661	Greenville County 80.1% Pickens County 19.9%	19.9%	2
29666	Greenwood County 94.5% Saluda County 5.5%	5.5%	2
29669	Greenville County 72.2% Anderson County 27.8%	27.8%	2
29670	Anderson County 95.3% Pickens County 4.7%	4.7%	2
29673	Greenville County 53.9% Anderson County 46.1%	46.1%	2
29678	Oconee County 99.4% Pickens County 0.6%	0.6%	2
29681	Greenville County 97.5% Laurens County 2.5%	2.5%	2
29689	Anderson County 88.5% Oconee County 11.5%	11.5%	2
29692	Laurens County 80.0% Greenwood County 12.6% Abbeville County 7.4%	20.0%	3
29702	Cherokee County 85.5% York County 14.6%	14.6%	2
29704	York County 56.6% Chester County 43.4%	43.4%	2
29706	Chester County 99.7% York County 0.3%	0.3%	2
29712	Chester County 85.0% York County 15.0%	15.0%	2
29718	Chesterfield County 90.5% Kershaw County 7.0% Lancaster County 2.6%	9.6%	3
29730	York County 95.3% Chester County 4.7%	4.7%	2
29742	York County 84.0% Chester County 16.0%	16.0%	2
29743	York County 84.5% Cherokee County 15.5%	15.5%	2
29812	Barnwell County 97.7% Allendale County 2.3%	2.3%	2
29817	Barnwell County 83.8% Bamberg County 16.2%	16.2%	2
29819	Greenwood County 83.2% Abbeville County 11.3% McCormick County 5.5%	16.8%	3
29821	Edgefield County 52.6% McCormick County 47.4%	47.4%	2
29824	Edgefield County 98.3% Saluda County 1.8%	1.8%	2
29827	Allendale County 96.2% Hampton County 3.9%	3.9%	2
29832	Edgefield County 66.5% Saluda County 32.7% Aiken County 0.8%	33.5%	3
29835	McCormick County 84.2% Edgefield County 15.8%	15.8%	2
29836	Allendale County 83.0% Barnwell County 17.0%	17.0%	2
29838	Edgefield County 67.0% McCormick County 33.0%	33.0%	2
29843	Bamberg County 81.4% Barnwell County 18.6%	18.6%	2
29845	McCormick County 91.3% Edgefield County 8.7%	8.7%	2
29847	Edgefield County 75.6% Aiken County 24.4%	24.4%	2
29848	McCormick County 53.0% Greenwood County 38.1% Saluda County 9.0%	47.0%	3
29849	Allendale County 73.5% Barnwell County 26.5%	26.5%	2
29853	Barnwell County 75.1% Aiken County 24.9%	24.9%	2
29860	Edgefield County 85.5% Aiken County 14.5%	14.5%	2
29909	Beaufort County 97.7% Jasper County 2.3%	2.3%	2
29916	Hampton County 63.0% Jasper County 37.0%	37.0%	2
29922	Hampton County 67.0% Jasper County 33.0%	33.0%	2
29927	Jasper County 99.7% Beaufort County 0.3%	0.3%	2
29932	Allendale County 88.5% Hampton County 11.5%	11.5%	2
29934	Jasper County 87.4% Hampton County 12.6%	12.6%	2
29944	Hampton County 86.2% Jasper County 13.8%	13.8%	2
29945	Colleton County 42.2% Beaufort County 26.8% Hampton County 15.5% Jasper County 15.5%	57.8%	4

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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