Demographics of Fairfield County, South Carolina

Fairfield County, South Carolina had 20,340 people on July 1, 2025, by the Census Bureau’s estimate: −552 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.

Fairfield County, in four figures

20,340
Population: July 1, 2025, Vintage 2025 estimate.; −2.6%
Change since July 2020: −552 people.; 47.4 ±0.5
Median age: ACS 2020–⁠2024.; $47,885 ±$4,289
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.

Fairfield County, South Carolina's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Fairfield 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

Fairfield County, South Carolina's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Fairfield 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	20,892	100.0	100.0
2021	20,711	99.1	100.2
2022	20,455	97.9	100.7
2023	20,489	98.1	101.6
2024	20,478	98.0	102.5
2025	20,340	97.4	103.1

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Population of Fairfield 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	20,892	−69	−43	0	−29
2021	20,711	−181	−208	0	+13
2022	20,455	−256	−207	−1	−36
2023	20,489	+34	−120	+8	+145
2024	20,478	−11	−151	+1	+143
2025	20,340	−138	−152	−6	+20

Age, 2020–2024

The median age is 47.4 ±0.5: for men 45.8 ±1.4 and for women 49.3 ±1.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Fairfield County by age, ACS 2020–2024
Age	People	Share	South Carolina	United States
Under 5	951 ±76	4.6% ±0.4	5.5% ±<0.1	5.6% ±<0.1
5 to 17	2,740 ±260	13.3% ±1.3	16.0% ±0.1	16.3% ±<0.1
18 to 24	1,661 ±305	8.1% ±1.5	9.1% ±0.1	9.1% ±<0.1
25 to 44	4,254 ±267	20.7% ±1.3	25.3% ±0.1	26.9% ±<0.1
45 to 64	6,003 ±354	29.2% ±1.7	25.2% ±0.1	24.8% ±<0.1
65 and over	4,941 ±428	24.0% ±2.1	18.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $47,885 ±$4,289, and income per person $31,810 ±$2,174, 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 Fairfield County by income, ACS 2020–2024
Household income	Households	Share	South Carolina	United States
Under $25,000	2,235 ±377	25.0% ±4.1	17.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	2,444 ±402	27.4% ±4.4	19.6% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,213 ±256	13.6% ±2.8	17.0% ±0.3	15.5% ±<0.1
$75,000 to $99,999	942 ±224	10.5% ±2.5	13.1% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,154 ±261	12.9% ±2.9	16.4% ±0.2	17.5% ±<0.1
$150,000 to $199,999	531 ±162	5.9% ±1.8	8.0% ±0.2	9.6% ±<0.1
$200,000 or more	411 ±123	4.6% ±1.4	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 Fairfield County by age, ACS 2020–2024
Age	Below poverty	Rate	South Carolina	United States
All ages	3,168 ±557	15.6% ±2.8	14.1% ±0.2	12.5% ±0.1
Under 18	765 ±236	20.8% ±6.0	19.4% ±0.4	16.1% ±0.1
18 to 59	1,364 ±310	13.8% ±3.1	13.1% ±0.2	11.6% ±0.1
60 and over	1,039 ±250	15.5% ±3.6	11.6% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Fairfield County, ACS 2020–2024
Measure	Fairfield County	South Carolina	United States
Housing units	11,003 ±20	2,443,039 ±311	143,775,355 ±10,234
Occupied	81.2% ±3.0	86.7% ±0.2	89.9% ±0.1
Vacant	18.8% ±3.0	13.3% ±0.2	10.1% ±0.1
Owner occupied	74.6% ±2.9	71.9% ±0.3	65.2% ±0.3
Renter occupied	25.4% ±3.4	28.1% ±0.3	34.8% ±0.1
Median home value	$151,200 ±$19,395	$259,000 ±$1,421	$332,700 ±$236
Median gross rent	$938 ±$61	$1,180 ±$9	$1,413 ±$2
Median year built	1984 ±2	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 Fairfield County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Carolina	United States
Hispanic or Latino	516 ±0	2.5% ±<0.1	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,998 ±97	38.9% ±0.5	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	11,192 ±275	54.5% ±1.3	24.6% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 46	0% to 0.2%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 47	0% to 0.2%	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	21 to 175	0.1% to 0.9%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	709 ±275	3.5% ±1.3	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 Fairfield County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Carolina	United States
Born in the state	15,722 ±554	76.5% ±2.7	52.6% ±0.2	57.3% ±<0.1
Born in another state	4,502 ±526	21.9% ±2.6	40.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	35 to 161	0.2% to 0.8%	1.2% ±0.1	1.7% ±<0.1
Born abroad	108 to 348	0.5% to 1.7%	5.8% ±0.1	14.1% ±<0.1
Naturalized citizens	90 to 320	0.4% to 1.6%	2.6% ±0.1	7.4% ±<0.1
Not citizens	0 to 60	0% to 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%.

Fairfield County among the counties of South Carolina

39th of 46 by population, July 2025. Every one is listed on the South Carolina page.

Counties of South Carolina near Fairfield County in population, July 2025
County	July 2025	Change since 2020
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%
Saluda County	19,680	+4.0%
Hampton County	18,174	−1.9%
Lee County	15,730	−5.0%
Calhoun County	14,188	+0.5%
Bamberg County	12,796	−3.5%

Elsewhere on the site

Rankings this appears in

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