County ZIP codes · South Carolina · FIPS 45057
Lancaster County, SC ZIP Codes
Lancaster County, South Carolina has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 5 residential and 3 for PO boxes or a single organization. 4 of the residential ones lie mainly in Lancaster County and 1 mainly in a neighboring county; 3 cross the county line. Median household income ranges from $52,077 in 29067 (Kershaw) to $118,295 in 29707 (Fort Mill) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Lancaster County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $52,383 and $62,969.
They carry 5 postal town names: Lancaster, Fort Mill, Kershaw, Heath Springs, Jefferson.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 5 residential ZIP codes in Lancaster County
4 ZIP codes lie mainly in Lancaster County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 29720 | Lancaster | 53,584 | 188 | $63k | $246k | 100% |
| 29707 | Fort Mill | 37,629 | 1,322 | $118k | $471k | 100% |
| 29067 | Kershaw | 11,116 | 58 | $52k | $155k | 54% |
| 29058 | Heath Springs | 5,423 | 37 | $52k | $152k | 90% |
Partly in Lancaster County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 29718 | Jefferson | 4,133 | 40 | $60k | $128k | 3% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
3 ZIP codes of Lancaster County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Lancaster | Elsewhere |
|---|---|---|
| 29067 | 54% | Kershaw County 46% |
| 29058 | 90% | Kershaw County 10% |
| 29718 | 3% | Chesterfield County 90%; Kershaw County 7% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Lancaster County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Lancaster County's ZIP codes use 2 prefixes: 290 and 297.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.