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Union County, SC
6 cities and towns and 6 ZIP codes in Union County, South Carolina.
Population
26,885
Land area
514sq mi
People per sq mi
52
ZIP codes
6
Cities and towns in Union County
Union County at a glance
- Union County is 70% less dense than South Carolina as a whole.
- The median household income is $41,621, 40% below the South Carolina median of $69,324.
- A typical owner-occupied home is valued at $103,600 (60% below South Carolina) and median rent is $804 a month.
- Its largest cities are Union (8,079), Monarch Mill (1,822) and Buffalo (1,329).
Local data for Union County, SC
Counts from official public data
Housing and community stats
Union County, SC, American Community Survey 2020-2024
Median household income
$41,621
Poverty rate
22.6%
Median home value
$103,600
Prices -1.8% in a year
Median rent
$804/mo
Homeownership
71.3%
Bachelor's or higher
15.0%
Median age
44.5
Average commute
27.4 min
Largest reported origins and ancestries: Irish Americans (2,120), German Americans (1,417), Italian Americans (459).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
6.3%
Aug 2026, 0.0 pts in a year
Average annual pay
$50,848
7,318 jobs, 2025
Income per person
$43,154
BEA, 2024
Federal spending
$207M
FY 2026, $7,589 per person
PPP loans
$18.9M
506 loans, 2,448 jobs reported
Campaign donations
$25.9K
Itemized, 2026 cycle
How people get to work
Union County, SC, workers 16 and older. American Community Survey 5-year estimates
- Drove alone83.5%
- Carpooled11.7%
- Public transit0.0%
- Walked0.6%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.8%
- Worked from home3.4%
Average one-way commute: 27.4 minutes for people who do not work from home.
Environment and hazard risk
Union County, SC, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: ice storm
Storm events since 1996
414
Most often thunderstorm wind
Flood insurance policies
1
0.0% of homes, county
July high / Jan low
90° / 29°F
45.3 inches of rain a year
Hazards, floods and storm historyCheck a flood zone20 historic places
Health statistics
Share of adults in Union County, SC, CDC PLACES estimates
Obesity
44.0%
U.S. 33.3% +10.7 pts
Diabetes
19.1%
U.S. 12.1% +7.0 pts
Smoking
19.2%
U.S. 12.8% +6.4 pts
Uninsured (18-64)
14.8%
U.S. 11.1% +3.7 pts
Cities, towns and ZIP codes in Union County
Population shown
Frequently asked questions
- What is the largest city in Union County, SC?
- Union is the largest city or town in Union County, with about 8,079 residents.
- How many ZIP codes are in Union County?
- Union County includes 6 ZIP Code Tabulation Areas, including 29178, 29321, 29353, 29364, 29372.
- What is the population of Union County, SC?
- About 26,885 people live in Union County, based on American Community Survey 5-year estimates.
- What counties border Union County?
- Union County borders Spartanburg County, York County, Laurens County, Cherokee County, Newberry County, Chester County, Fairfield County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023