Sumter County, South Carolina Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 15th-largest in South Carolina
The population of Sumter County, South Carolina is 104,853 as of the 2023 American Community Survey, making it the 15th-largest county in South Carolina. The median household income is $55,990, the median home value is $159,500, and the median age is 37.3.
The population of Sumter County has declined 2.6% since 2010 (107,610 → 104,776), a -0.19% annualized rate.
104,853
Population
-0.19%
Annual growth
158
People / sq mi
$55,990
Median Income
$159,500
Median Home Value
Sumter County covers 665 sq mi of land at 157.7 people per square mile.
About Sumter County, SC
What sets Sumter County apart is where people work — remote work is unusually rare here, at 4.5% versus 14.0% nationally. With 104,853 residents, Sumter County is a county in South Carolina. It ranks #15 among counties in South Carolina by population.
The typical household earns $55,990, below the US median of $78,538. The poverty rate is 12.7%, close to the national 12.4%. The typical home is valued at $159,500, with typical rent around $1,006.
Degree attainment is mid-range for US counties: 23.2% of adults hold a four-year degree, below the national 35.0%. Most workers commute: only 4.5% work from home, below the national 14.0%, and the average commute runs about 23 minutes each way.
Sumter County Population History (2010-2024)
The county of Sumter County had a population of 107,610 in 2010 and 104,776 in 2024, a -2.6% growth over 14 years. The peak was 107,944 in 2012. Average annual growth rate: -0.19%.
104,776
Population (2024)
107,610
Population (2010)
107,944
Peak (2012)
-0.19%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 107,610 |
| 2011 | 107,316 |
| 2012 | 107,944 |
| 2013 | 107,840 |
| 2014 | 107,784 |
| 2015 | 107,346 |
| 2016 | 107,257 |
| 2017 | 106,604 |
| 2018 | 106,518 |
| 2019 | 106,635 |
| 2020 | 105,493 |
| 2021 | 104,879 |
| 2022 | 104,068 |
| 2023 | 104,410 |
| 2024 | 104,776 |
Race & Ethnicity
| White | 45.1% |
| Black or African American | 46.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
37.3
Median Age
51.7%
Female
48.3%
Male
17.4%
Age 65+
Age Distribution
Children (under 15): 19.9% · Seniors (65+): 17.4%
Income & Poverty
| Median household income | $55,990$-10,828 vs state |
| Mean household income | $72,474 |
| Per-capita income | $29,372 |
| Poverty rate | 12.7%+2.6% vs state |
| Unemployment rate | 3.9% |
| Employment-to-population | 49.5% |
Top Industries by Employment
The largest employment sector in Sumter County is professional & business services, accounting for 25.1% of workers.
How residents commute
0.2%
Drive alone
1.5%
Carpool
85.0%
Public transit
4.5%
Work from home
22.9 min
Avg commute
Housing
$159,500$-77,200 vs state
Median home value
$1,006
Median rent
66.8%
Homeownership rate
47,288
Total housing units
87.1%
Occupied
12.9%
Vacant
33.2%
Renter-occupied
Social & access
89.5%
With health insurance
90.2%
With broadband internet
32.1%
Foreign-born
13.5%
Veterans (18+)
14.9%
With a disability
94.5%
Speak language other than English at home
Education
89.1%
High School+
23.2%
Bachelor's+
Largest cities in South Carolina
Other counties in South Carolina
Part of South Carolina
Metro areas in South Carolina
County rankings
Frequently Asked Questions
Sumter County, South Carolina has a population of 104,853 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 15th-largest county in South Carolina. Population density is 158 people per square mile.
The population of Sumter County has declined 2.6% since 2010 (107,610 → 104,776), a -0.19% annualized rate.
The median household income in Sumter County, South Carolina is $55,990, with mean (average) household income of $72,474 and per-capita income of $29,372. 12.7% of residents live below the federal poverty level.
In Sumter County, the largest racial and ethnic groups are Black or African American (46.2%), White (45.1%), Hispanic or Latino (1.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sumter County, South Carolina is 37.3 years. Residents are 51.7% female and 48.3% male.
The median home value in Sumter County is $159,500 and median monthly rent is $1,006. 66.8% of occupied housing units are owner-occupied. The county has 47,288 total housing units, 12.9% of which are vacant.
The largest employment sector in Sumter County, South Carolina is professional, scientific, and management services, employing 25.1% of workers. The unemployment rate is 3.9%.
Charleston is among the largest cities associated with Sumter County, South Carolina, with a population of 152,014.
Sumter County, SC Climate
Sumter County, SC has an average annual temperature of 17.3°C (63°F) and receives about 1197 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
17.3°C
Avg Temp
1197
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 7° / 44° | 110 mm |
| February | 9° / 48° | 91 mm |
| March | 13° / 55° | 111 mm |
| April | 17° / 63° | 72 mm |
| May | 21° / 71° | 89 mm |
| June | 25° / 77° | 130 mm |
| July | 27° / 81° | 136 mm |
| August | 26° / 79° | 129 mm |
| September | 24° / 74° | 98 mm |
| October | 18° / 64° | 75 mm |
| November | 13° / 55° | 69 mm |
| December | 9° / 47° | 87 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Sumter County, SC
The most comfortable months to visit Sumter County, SC are typically May, October and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 1°C low). July is usually the wettest month.
Where to stay near Sumter County
Visiting or relocating to Sumter County, SC? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Sumter County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Sumter County?
Get relocation and cost-of-living insights for Sumter County, SC by email. No spam, unsubscribe anytime.
More from South Carolina
Population 537,575
Population 418,725
Population 414,711
Population 368,937
Full rankings of South Carolina counties
Statewide data for South Carolina
Population, race, income, age, and trends across South Carolina
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.