What is the largest city in Sumter County, SC?

Sumter is the largest city or town in Sumter County, with about 43,053 residents.

How many ZIP codes are in Sumter County?

Sumter County includes 9 ZIP Code Tabulation Areas, including 29040, 29062, 29104, 29128, 29150.

What is the population of Sumter County, SC?

About 104,725 people live in Sumter County, based on American Community Survey 5-year estimates.

What counties border Sumter County?

Sumter County borders Richland County, Florence County, Kershaw County, Clarendon County, Lee County, Calhoun County.

Sumter County, SC: Cities, ZIP Codes & Local Data

Population

104,725

Land area

665sq mi

People per sq mi

157

ZIP codes

9

Sumter County at a glance

The median household income is $56,693, 18% below the South Carolina median of $69,324.
A typical owner-occupied home is valued at $165,300 (36% below South Carolina) and median rent is $1,057 a month.
Its largest cities are Sumter (43,053), Lakewood (3,544) and Dalzell (2,946).

Local data for Sumter County, SC

Counts from official public data

Housing and community stats

Sumter County, SC, American Community Survey 2020-2024

Full profile

Median household income

$56,693

Poverty rate

16.6%

Median home value

$165,300

Prices +4.5% in a year

Median rent

$1,057/mo

Homeownership

68.1%

Bachelor's or higher

23.5%

Median age

38.0

Average commute

23.0 min

Largest reported origins and ancestries: Irish Americans (5,907), German Americans (5,791), Italian Americans (2,462).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

5.4%

Aug 2026, -0.4 pts in a year

Average annual pay

$54,501

35,348 jobs, 2025

Income per person

$52,221

BEA, 2024

Federal spending

$1.3B

FY 2026, $11,911 per person

PPP loans

$167M

4,216 loans, 20,461 jobs reported

Campaign donations

$308K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Sumter County, SC, workers 16 and older. American Community Survey 5-year estimates

Drove alone85.2%
Carpooled7.6%
Public transit0.2%
Walked1.2%
Bicycle0.1%
Taxi, ride-hailing, motorcycle or other1.2%
Worked from home4.5%

Average one-way commute: 23.0 minutes for people who do not work from home.

Environment and hazard risk

Sumter County, SC, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: hurricane

Storm events since 1996

608

Most often thunderstorm wind

Flood insurance policies

512

1.0% of homes, county

July high / Jan low

90° / 33°F

48.8 inches of rain a year

Hazards, floods and storm history Check a flood zone 15 historic places

Health statistics

Share of adults in Sumter County, SC, CDC PLACES estimates

All 40 measures

Obesity

42.7%

U.S. 33.3% +9.4 pts

Diabetes

15.8%

U.S. 12.1% +3.7 pts

Smoking

15.0%

U.S. 12.8% +2.2 pts

Uninsured (18-64)

12.7%

U.S. 11.1% +1.6 pts

Cities, towns and ZIP codes in Sumter County

Population shown

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Frequently asked questions

What is the largest city in Sumter County, SC?: Sumter is the largest city or town in Sumter County, with about 43,053 residents.
How many ZIP codes are in Sumter County?: Sumter County includes 9 ZIP Code Tabulation Areas, including 29040, 29062, 29104, 29128, 29150.
What is the population of Sumter County, SC?: About 104,725 people live in Sumter County, based on American Community Survey 5-year estimates.
What counties border Sumter County?: Sumter County borders Richland County, Florence County, Kershaw County, Clarendon County, Lee County, Calhoun County.