Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/SC/COUNTY/UNION

Union County, SC ZIP codes

Union County, SC has 5 ZIP codes, in 4 towns: 29379, 29353, 29321, 29364 and 29395. 2 more cross into it from neighbouring counties: 29178 and 29031.

The county seat is Union.

ZIP codes
5
Partly in it
2 more
Towns
4
County seat
Union
County FIPS
45087
Population
26,885
Median household income
$41,621
Land area
514 sq mi
Metro area
Spartanburg

Union County ZIP codes by town

Union (county seat)
29379

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Union County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Union County.

Map of Union County ZIP codes

2932129353293642937929395

The ZIP codes of Union County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Union County in numbers

About 26,885 people live in Union County, in 11,611 households, the 35th most populous of South Carolina's 46 counties. The median household income is $41,621 a year, 40% below the South Carolina median of $69,324 (US: $80,734). The median owner-occupied home is valued at $103,600 (60% below the South Carolina median), and median gross rent is $804 a month. The median age is 44.5; 15.0% of adults 25 and over hold a bachelor's degree or higher (32.1% across South Carolina); the average commute takes 27 minutes.

Population26,885Union26,885
Households11,611Union11,611
Median age44.5Union44.5South Carolina40.2US 38.9
Median household income$41,621Union$41,621South Carolina$69,324US $80,734
Median home value$103,600Union$103,600South Carolina$259,000US $332,700
Median gross rent$804Union$804South Carolina$1,180US $1,413
Bachelor's degree or higher15.0%Union15.0%South Carolina32.1%US 35.7%
Mean commute27.4 minUnion27.4 minSouth Carolina25.6 minUS 26.4 min
Population density52 / sq miUnion52 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Union County

Largest towns in Union County
TownZIP codesPopulation
Union 1 8,079
Buffalo 1 1,329
Jonesville 2 1,118
Lockhart 1 405

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Union County.

Not sure you are in Union County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Union County, with figures

ZIP codes in Union County
ZIP City Type Population Median income Median home
29321 Buffalo , SC Standard 3,236 $34,464 $60,000
29353 Jonesville , SC Standard 3,675 $64,494 $116,800
29364 Lockhart , SC Standard 553 $25,089 $22,900
29379 Union , SC Standard 17,607 $40,879 $109,900
29395 Jonesville , SC No street area — — —

Cite this page

zipcodes.pro. “Union County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/sc/county/union

Underlying data is public domain or openly licensed — sources, vintages and licences.