Union County, SC demographics:
population, income, and more

Total population
26,885
-0.4% year-over-year change
Median household income
$41,621/yr
1.0% year-over-year change
Housing units
13,527
0.1% year-over-year change

Union County population

How many people live in Union County

Union County is home to 26,885 residents, according to the most recent Census data. Gender-wise, 47.2% of Union County locals are male, and 52.8% are female.

Total population
26,885
-0.4% year-over-year change
Gender ratio
Male
47.2%
12,684
Female
52.8%
14,201
Value Percent YoY change
Male 12,684 47.2% -0.4%
Female 14,201 52.8% -0.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Union County is 44, with the population distributed as follows: about 16.9% are children under 15, then 11% are in the 15 to 24 age group. Adults between 25 and 44 make up 22.8% of the population, while another 27.7% fall into the 45 to 64 bracket. Finally, around 21.6% are 65 or older.

Median age
44.5
Age breakdown
Under 15
16.9%
15 to 24
11%
25 to 44
22.8%
45 to 64
27.7%
Over 65
21.6%
Value Percent YoY change
Under 15 4,555 16.9% -1.9%
15 to 24 2,954 11% -0.4%
25 to 44 6,124 22.8% -0.9%
45 to 64 7,442 27.7% -1.4%
Over 65 5,810 21.6% 2.8%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Union County, 97.9% of the population are US-born citizens, while 1% have gained naturalized citizenship. At the same time, 1.1% of residents are non-citizens. As for race, 64.5% of locals are Caucasian, 27.8% are African American and 0.2% have Asian roots. There’s also a share of 6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97.9%
Non-U.S.-born citizens
1%
Non-citizens
1.1%
Value Percent YoY change
U.S.-born citizens 26,309 97.9% -0.7%
Non-U.S.-born citizens 278 1% -13.1%
Non-citizens 298 1.1% 79.5%
Racial breakdown
White
64.5%
Black or African American
27.8%
American Indian and Alaska Native
0.3%
Asian
0.2%
Native Hawaiian and other Pacific Islander
0%
Two or more races
6%
Other
1.2%
Value Percent
White 17,346 64.5%
Black or African American 7,475 27.8%
American Indian and Alaska Native 81 0.3%
Asian 43 0.2%
Native Hawaiian and other Pacific Islander 5 0%
Two or more races 1,610 6%
Other 325 1.2%

Households in Union County

A peek inside Union County households

Union County has 11,611 households, with an average of 2 members in each. Of these, 60.9% are families, while the remaining 39.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
11,611
-1.1% year-over-year change
Average people per household
2
Non-family households
4,536
Family households
7,075
Value Percent YoY change
Non-family households 4,536 39.1% -2.0%
Family households 7,075 60.9% -0.5%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Union County

The housing landscape of Union County

Union County's housing consists of 13,527 units, with 68.7% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.2% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 21.2% of the housing landscape.

Housing units
13,527
0.1% year-over-year change
Housing types
Value Percent
1 unit, detached 9,287 68.7%
1 unit, attached 23 0.2%
2 units 204 1.5%
3 or 4 units 387 2.9%
5 to 9 units 222 1.6%
10 to 19 units 80 0.6%
20 to 49 units 317 2.3%
50 or more units 79 0.6%
Mobile home 2,862 21.2%
Boat, RV, van, etc. 66 0.5%
Homes built since 2020
140
118.8% year-over-year change

The age of buildings in Union County

In Union County, the median construction year is 1972. About 15.2% of homes were built before the 1940s, with another 4.4% going up by 1949. Most development happened in the second half of the 20th century. Then, 8.7% of homes were added from 2000 to 2009, 3.3% between 2010 and 2019, and 1% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 2,056 15.2% 17.9%
Built between 1940 and 1949 598 4.4% -23.2%
Built between 1950 and 1959 1,467 10.8% 11.7%
Built between 1960 and 1969 2,006 14.8% -1.9%
Built between 1970 and 1979 2,576 19% 1.6%
Built between 1980 and 1989 1,251 9.2% -6.7%
Built between 1990 and 1999 1,805 13.3% -10.4%
Built between 2000 and 2009 1,176 8.7% 1.4%
Built between 2010 and 2019 452 3.3% -11.9%
Built in 2020 or later 140 1% 118.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Union County occupancy rates

Out of the 11,611 occupied housing units in Union County, 71.3% are owner-occupied, while 28.7% are lived in by tenants. Meanwhile, 14.2% of all homes on the local market sit vacant.

Occupied housing units
11,611
-1.1% year-over-year change
Occupancy breakdown
Renter occupied
3,335
Owner occupied
8,276
Value Percent YoY
change
Renter occupied 3,335 28.7% -7.5%
Owner occupied 8,276 71.3% 1.8%
Unoccupied housing units
14.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Union County housing costs

Housing costs in Union County come to a median of $577 per month, while tenants specifically pay a median gross rent of $804.

Median housing costs per month
$577/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Union County
$804/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Union County

Union County education at a glance

About 51.3% of the population in Union County went to high school, while 20.4% pursued college studies. Another 9.1% earned an associate degree and 10.6% hold a bachelor’s. Meanwhile, 3.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 1,135 5.3% -5.3%
High school diploma 10,919 51.3% -1.9%
College diploma 4,334 20.4% -2.5%
Associate degree 1,937 9.1% 3.6%
Bachelor's degree 2,246 10.6% 10.7%
Graduate degree 724 3.4% 13.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Union County

How much people earn in Union County

The average annual household income in Union County was $60,230 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.5% change from the previous year. At the same time, the median income stood at $41,621, reflecting a +1% shift over the same period.

Average household income in Union County
$60,230/year
2.5% year-over-year change
Median household income in Union County
$41,621/year
1.0% year-over-year change

Union County income by age

In Union County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $55,396. Those with someone between 45 and 64 in charge, often well established professionally, earn $41,885 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $36,333, while those led by someone over 65, many of whom may be retired, have about $34,586 in earnings. Overall, 77.7% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $36,333 -1.8%
25 - 44 $55,396 -0.2%
45 - 64 $41,885 -0.2%
Over 65 $34,586 1.0%
Above poverty level
20,374
Below poverty level
5,846
Value Percent YoY
change
Above poverty level 20,374 77.7% -0.3%
Below poverty level 5,846 22.3% -0.3%

Employment in Union County

Workforce and job types in Union County

The job market in Union County is powered by 10,790 working residents, spread across a range of industries and roles. 58% of the working population are employed in professional or administrative positions, while 42% are in hands-on or service-based jobs. Also, 6.3% run their own businesses, 71.4% are employed by private companies, and 15.2% work in the public sector.

Workforce demographics

Working population
10,790
-0.8% year-over-year change
White collar
6,264
Blue collar
4,526
Value Percent YoY change
White collar 6,264 58% -0.2%
Blue collar 4,526 42% -1.5%
Employer type
Self employees
6.3%
Private companies
71.4%
Governmental workers
15.2%
Not for profit companies
7.1%
Value Percent YoY change
Self employees 684 6.3% -9.3%
Private companies 7,700 71.4% -3.1%
Governmental workers 1,639 15.2% 14.9%
Not for profit companies 767 7.1% 3.0%
Unemployment rate
7.9%
3.2% year-over-year change

Available workforce

The unemployment rate in Union County stands at 7.9%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Union County

How people get around in Union County

In Union County, the average commute time is 27 minutes. Commuting methods vary: 95.2% of residents travel by personal vehicle and 0.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
27 min
-1.1% year-over-year change
Means of transportation
Value Percent YoY change
Car 9,920 95.2% -0.9%
Taxicab 9 0.1% 50.0%
Motorcycle 21 0.2% -19.2%
Walk 63 0.6% -58.3%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Union County by zipcode?

Zipcode Population Number of households Median income Average income
29031 1,617 608 $61,143 $62,227
29178 3,280 1,351 $60,241 $63,485
29321 3,236 1,299 $34,464 $62,723
29335 5,472 1,951 $52,670 $71,728
29353 3,675 1,559 $64,494 $73,100
29364 553 275 $25,089 $42,657
29372 3,552 1,710 $46,739 $55,939
29379 17,607 7,786 $40,879 $56,807

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FAQs about Union County demographics 

What is the total population of Union County?

Union County has a total population of 26,885 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -0.4% compared to a year ago.

What is the gender ratio in Union County?

The gender ratio in Union County is as follows:
  • 47.2% males (12,684 residents)
  • 52.8% females (14,201 residents)

What is the median age in Union County?

The median age in Union County is 44.5.

What is the age distribution of the population in Union County?

The age distribution in Union County is as follows:
  • Under 15: 16.9% (4,555 residents)
  • Ages 15-24: 11% (2,954 residents)
  • Ages 25-44: 22.8% (6,124 residents)
  • Ages 45-64: 27.7% (7,442 residents)
  • Over 65: 21.6% (5,810 residents)

What is the racial and ethnic makeup of Union County?

The racial and ethnic makeup of Union County is as follows:
  • White: 64.5% (17,346 residents)
  • Black or African American: 27.8% (7,475 residents)
  • American Indian and Alaska Native: 0.3% (81 residents)
  • Asian: 0.2% (43 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (5 residents)
  • Two or More Races: 6% (1,610 residents)
  • Other: 1.2% (325 residents)

What percentage of the population in Union County are U.S.-born citizens?

U.S.-born citizens represent 97.9% of the population in Union County.

How many housing units are there in Union County?

There are 13,527 housing units in Union County, reflecting a +0.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Union County and what is the average household size?

Union County has a total of 11,611 households, with an average of 2 people in each.

What is the median household income in Union County?

Union County has a median household income of $41,621, representing a +1.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Union County?

The employment rate is 92.1% in Union County, with a workforce of 10,790 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 58% (6,264 residents)
  • Blue-collar workers: 42% (4,526 residents)

Places of employment:
  • Self-employed: 6.3% (684 residents)
  • Private companies: 71.4% (7,700 residents)
  • Governmental workers: 15.2% (1,639 residents)
  • Not-for-profit companies: 7.1% (767 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025