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Marion County, SC
8 cities and towns and 6 ZIP codes in Marion County, South Carolina.
Population
28,664
Land area
489sq mi
People per sq mi
59
ZIP codes
6
Cities and towns in Marion County
Marion County at a glance
- Marion County is 67% less dense than South Carolina as a whole.
- The median household income is $36,301, 48% below the South Carolina median of $69,324.
- A typical owner-occupied home is valued at $93,200 (64% below South Carolina) and median rent is $669 a month.
- Its largest cities are Marion (6,206), Mullins (3,914) and Daviston (262).
Local data for Marion County, SC
Counts from official public data
- Hospitals1
- Emergency Rooms1
- Nursing Homes2
- Schools12
- Colleges1
- Libraries4
- Banks10
- Post Offices7
- Parks6
- Grocery Stores23
- Restaurants72
- Affordable Housing3
- Dialysis Centers2
- Community Health Centers3
- Mental Health & Addiction Treatment2
- Private Schools2
- Community Colleges & Trade Schools1
- Toxic Release Facilities1
- Historic Places12
Housing and community stats
Marion County, SC, American Community Survey 2020-2024
Median household income
$36,301
Poverty rate
30.0%
Median home value
$93,200
Prices +4.3% in a year
Median rent
$669/mo
Homeownership
62.6%
Bachelor's or higher
14.5%
Median age
42.6
Average commute
28.3 min
Largest reported origins and ancestries: Irish Americans (751), Mexican Americans (681), German Americans (455).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
6.0%
Sep 2026, -0.1 pts in a year
Average annual pay
$47,857
6,847 jobs, 2025
Income per person
$47,091
BEA, 2024
Federal spending
$383M
FY 2026, $13,121 per person
PPP loans
$19.4M
725 loans, 3,132 jobs reported
Campaign donations
$30.1K
Itemized, 2026 cycle
How people get to work
Marion County, SC, workers 16 and older. American Community Survey 5-year estimates
- Drove alone86.0%
- Carpooled7.4%
- Public transit0.0%
- Walked0.5%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home5.2%
Average one-way commute: 28.3 minutes for people who do not work from home.
Environment and hazard risk
Marion County, SC, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: hurricane
Storm events since 1996
313
Most often thunderstorm wind
Flood insurance policies
277
2.0% of homes, county
July high / Jan low
91° / 34°F
49.3 inches of rain a year
Hazards, floods and storm historyCheck a flood zone12 historic places
Health statistics
Share of adults in Marion County, SC, CDC PLACES estimates
Obesity
45.3%
U.S. 33.3% +12.0 pts
Diabetes
22.0%
U.S. 12.1% +9.9 pts
Smoking
20.1%
U.S. 12.8% +7.3 pts
Uninsured (18-64)
16.1%
U.S. 11.1% +5.0 pts
Cities, towns and ZIP codes in Marion County
Population shown
Frequently asked questions
- What is the largest city in Marion County, SC?
- Marion is the largest city or town in Marion County, with about 6,206 residents.
- How many ZIP codes are in Marion County?
- Marion County includes 6 ZIP Code Tabulation Areas, including 29519, 29546, 29571, 29574, 29589.
- What is the population of Marion County, SC?
- About 28,664 people live in Marion County, based on American Community Survey 5-year estimates.
- What counties border Marion County?
- Marion County borders Horry County, Florence County, Georgetown County, Williamsburg County, Dillon County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023