Demographics of Dillon County, South Carolina

Dillon County, South Carolina had 27,458 people on July 1, 2025, by the Census Bureau’s estimate: −816 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Dillon County, in four figures

27,458
Population: July 1, 2025, Vintage 2025 estimate.; −2.9%
Change since July 2020: −816 people.; 38.2 ±1.3
Median age: ACS 2020–⁠2024.; $46,605 ±$2,235
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Dillon County, South Carolina's population shrank 2.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Dillon County, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Dillon County, South Carolina's population shrank 2.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Dillon County, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	28,274	100.0	100.0
2021	27,981	99.0	100.2
2022	27,763	98.2	100.7
2023	27,708	98.0	101.6
2024	27,581	97.5	102.5
2025	27,458	97.1	103.1

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Population of Dillon County, South Carolina on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	28,274	−20	−35	0	+6
2021	27,981	−293	−147	+7	−166
2022	27,763	−218	−114	+35	−127
2023	27,708	−55	−99	+30	+20
2024	27,581	−127	−110	+53	−66
2025	27,458	−123	−117	+23	−30

Age, 2020–2024

The median age is 38.2 ±1.3: for men 36.2 ±0.7 and for women 41.2 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Dillon County by age, ACS 2020–2024
Age	People	Share	South Carolina	United States
Under 5	1,936 ±117	6.9% ±0.4	5.5% ±<0.1	5.6% ±<0.1
5 to 17	5,112 ±406	18.3% ±1.5	16.0% ±0.1	16.3% ±<0.1
18 to 24	2,318 ±300	8.3% ±1.1	9.1% ±0.1	9.1% ±<0.1
25 to 44	6,733 ±338	24.2% ±1.2	25.3% ±0.1	26.9% ±<0.1
45 to 64	6,753 ±335	24.2% ±1.2	25.2% ±0.1	24.8% ±<0.1
65 and over	5,010 ±366	18.0% ±1.3	18.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $46,605 ±$2,235, and income per person $24,278 ±$1,320, in 2024 dollars. The median is $69,324 ±$570 in South Carolina and $80,734 ±$166 in the United States.

Households by income

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Households in Dillon County by income, ACS 2020–2024
Household income	Households	Share	South Carolina	United States
Under $25,000	2,935 ±380	27.1% ±3.4	17.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	3,031 ±446	28.0% ±4.0	19.6% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,837 ±309	17.0% ±2.8	17.0% ±0.3	15.5% ±<0.1
$75,000 to $99,999	1,025 ±212	9.5% ±1.9	13.1% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,291 ±285	11.9% ±2.6	16.4% ±0.2	17.5% ±<0.1
$150,000 to $199,999	419 ±173	3.9% ±1.6	8.0% ±0.2	9.6% ±<0.1
$200,000 or more	291 ±138	2.7% ±1.3	8.9% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Dillon County by age, ACS 2020–2024
Age	Below poverty	Rate	South Carolina	United States
All ages	7,615 ±870	27.7% ±3.2	14.1% ±0.2	12.5% ±0.1
Under 18	2,898 ±474	41.4% ±5.5	19.4% ±0.4	16.1% ±0.1
18 to 59	3,339 ±456	23.5% ±3.0	13.1% ±0.2	11.6% ±0.1
60 and over	1,378 ±265	21.8% ±3.8	11.6% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Dillon County, ACS 2020–2024
Measure	Dillon County	South Carolina	United States
Housing units	12,914 ±53	2,443,039 ±311	143,775,355 ±10,234
Occupied	83.9% ±2.4	86.7% ±0.2	89.9% ±0.1
Vacant	16.1% ±2.4	13.3% ±0.2	10.1% ±0.1
Owner occupied	64.7% ±2.8	71.9% ±0.3	65.2% ±0.3
Renter occupied	35.3% ±3.7	28.1% ±0.3	34.8% ±0.1
Median home value	$85,400 ±$9,433	$259,000 ±$1,421	$332,700 ±$236
Median gross rent	$679 ±$52	$1,180 ±$9	$1,413 ±$2
Median year built	1984 ±3	1992 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Dillon County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Carolina	United States
Hispanic or Latino	979 ±0	3.5% ±<0.1	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	12,398 ±41	44.5% ±0.1	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	12,608 ±441	45.3% ±1.6	24.6% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 23	0% to 0.1%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	557 ±86	2.0% ±0.3	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 26	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 23	0% to 0.1%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,303 ±473	4.7% ±1.7	3.7% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Dillon County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Carolina	United States
Born in the state	22,528 ±632	80.9% ±2.3	52.6% ±0.2	57.3% ±<0.1
Born in another state	4,820 ±602	17.3% ±2.2	40.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 281	0% to 1.0%	1.2% ±0.1	1.7% ±<0.1
Born abroad	382 ±84	1.4% ±0.3	5.8% ±0.1	14.1% ±<0.1
Naturalized citizens	41 to 125	0.1% to 0.4%	2.6% ±0.1	7.4% ±<0.1
Not citizens	299 ±80	1.1% ±0.3	3.2% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Dillon County among the counties of South Carolina

34th of 46 by population, July 2025. Every one is listed on the South Carolina page.

Counties of South Carolina near Dillon County in population, July 2025
County	July 2025	Change since 2020
Chester County	33,001	+2.2%
Clarendon County	31,043	+0.7%
Edgefield County	29,808	+16.1%
Williamsburg County	29,662	−4.0%
Marion County	28,242	−2.9%
Dillon County	27,458	−2.9%
Union County	26,799	−1.4%
Marlboro County	25,488	−3.8%
Abbeville County	24,836	+2.3%
Barnwell County	20,653	+0.4%
Fairfield County	20,340	−2.6%

Elsewhere on the site

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Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026