Dillon County, South Carolina

Dillon County population, land area and income

Dillon County had 27,577 residents in the Census Vintage 2024 estimate, on 405.1 square miles of land. It ranks 34th of 46 in South Carolina by population and 42nd by land area. That works out to 68.1 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in South Carolina has 60,098 residents, so Dillon County has 46% of the typical county's population.

Its SAIPE 2023 median household income of $45,269 is in the bottom quarter among 3,143 counties with an estimate.

How Dillon County's population changed since 2020

Dillon County lost 703 residents between the July 2020 and July 2024 estimates, a drop of 2.5%. That ranks 41st of 46 in South Carolina for growth. The median South Carolina county changed by +2.9%, and the state as a whole by +6.8%.

Since the April 2020 estimates base, Dillon County recorded 1,543 births and 2,040 deaths, a natural change of -497. Net international migration added +112 and net domestic migration, people moving to or from other US counties, came to -344. The largest single component was natural change, which removed 497 people.

Where Dillon County is

The Census internal point of Dillon County is at 34.390200, -79.375200. It sits in UTM zone 17N. The map shades South Carolina's 46 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Dillon County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Dillon County

2 incorporated places of 1,000+ people have residents in Dillon County, 7,486 people together, or 27% of the county. Each figure counts only the part of the town inside Dillon County; towns marked "part" extend into another county. The largest is Dillon with 6,244.

Counties bordering Dillon County

The Census 2024 county adjacency file lists 6 neighbors for Dillon County, including 2 across a state line. The most populous is Horry County, SC, with 413,391 residents. Distances run between Census internal points in a straight line.

• Horry County

  413,391 people

  40 mi SE

• Florence County

  138,049 people

  31 mi SW

• NC

  Robeson County, NC

  118,624 people

  23 mi NE

• NC

  Columbus County, NC

  50,054 people

  43 mi ESE

• Marion County

  28,368 people

  21 mi S

• Marlboro County

  25,498 people

  23 mi NW

Distance to Columbia and the nearest big city

Columbia is 98.6 miles WSW of Dillon County's internal point in a straight line. The nearest place of 100,000 or more is Fayetteville, NC (population 209,496), 53.0 miles away. The nearest place of 10,000 or more is Lumberton, NC (population 18,882), 26.2 miles away.

Dillon County FIPS code

The FIPS code of Dillon County is 45033: state code 45 for South Carolina plus county code 033. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $45,269.