Barnwell, South Carolina demographics

Barnwell, SC demographics: median age 36.4; 18.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Barnwell city, South Carolina · Incorporated city · GEOID 4504060. The survey estimates a population of 4,613 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Barnwell is 36.4 years, with a 90% margin of error of 5.2 years. There are 1,789 households (±204). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	36.4 ±5.2	40.2 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 4,613
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Under 18	1,124 ±255	24.4% ±5.5 pp	21.4%	22.0%
18–34	1,126 ±262	24.4% ±5.7 pp	22.0%	22.8%
35–64	1,624 ±299	35.2% ±6.5 pp	37.7%	38.0%
65 and older	739 ±198	16.0% ±4.3 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 4,613
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Male	2,198 ±190	47.6% ±4.1 pp	48.7%	49.5%
Female	2,415 ±186	52.4% ±4.0 pp	51.3%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 4,613
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
White alone	2,261 ±353	49.0% ±7.6 pp	63.3%	61.0%
Black or African American alone	2,124 ±347	46.0% ±7.5 pp	24.8%	12.2%
American Indian and Alaska Native alone	25 ±30 · low precision	0.5% ±0.7 pp · low precision	0.4%	0.9%
Asian alone	63 ±71 · low precision	1.4% ±1.5 pp · low precision	1.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.2%
Some other race alone	0 ±14 · low precision	0.0% ±0.3 pp · low precision	2.8%	7.1%
Two or more races	140 ±100 · low precision	3.0% ±2.2 pp · low precision	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 4,613
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Not Hispanic or Latino	4,456 ±135	96.6% ±2.9 pp	92.6%	80.7%
Hispanic or Latino	157 ±136 · low precision	3.4% ±2.9 pp · low precision	7.4%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 1,789
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Married-couple family	642 ±158	35.9% ±7.8 pp	47.1%	46.9%
Other family: male householder, no spouse present	98 ±98 · low precision	5.5% ±5.4 pp · low precision	4.5%	5.1%
Other family: female householder, no spouse present	362 ±135	20.2% ±7.2 pp	13.4%	12.2%
Nonfamily: householder living alone	670 ±190	37.5% ±9.7 pp	29.2%	28.7%
Nonfamily: householder not living alone	17 ±32 · low precision	1.0% ±1.8 pp · low precision	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,789
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Households with people under 18	516 ±139	28.8% ±7.0 pp	28.6%	29.5%
Households without people under 18	1,273 ±235	71.2% ±10.3 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,789
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
One-person nonfamily households	670 ±190	37.5% ±9.7 pp	29.2%	28.7%
Two-person households	507 ±192	28.3% ±10.2 pp	36.3%	33.8%
Three-person households	286 ±140	16.0% ±7.6 pp	15.4%	15.3%
Four-person households	155 ±73	8.7% ±4.0 pp	11.6%	12.6%
Five-person households	115 ±84 · low precision	6.4% ±4.6 pp · low precision	5.0%	5.9%
Six-person households	56 ±57 · low precision	3.1% ±3.2 pp · low precision	1.7%	2.2%
Seven or more people	0 ±20 · low precision	0.0% ±1.1 pp · low precision	0.9%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 4,613
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Native	4,313 ±124	93.5% ±2.7 pp	94.2%	85.9%
Foreign born	300 ±125	6.5% ±2.7 pp	5.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 4,441
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
English only	4,215 ±179	94.9% ±3.4 pp	91.6%	77.7%
Spanish	28 ±31 · low precision	0.6% ±0.7 pp · low precision	5.3%	13.6%
French, Haitian, or Cajun	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	79 ±108 · low precision	1.8% ±2.4 pp · low precision	0.4%	0.7%
Other Indo-European	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.8%	2.0%
Korean	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	3 ±6 · low precision	0.1% ±0.1 pp · low precision	0.2%	1.1%
Vietnamese	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	17 ±30 · low precision	0.4% ±0.7 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	37 ±44 · low precision	0.8% ±1.0 pp · low precision	0.4%	1.1%
Arabic	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.5%
Other and unspecified	62 ±95 · low precision	1.4% ±2.1 pp · low precision	0.3%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 2,957
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Less than high school graduate	579 ±231	19.6% ±7.6 pp	9.9%	10.4%
High school graduate or equivalency	1,101 ±240	37.2% ±7.4 pp	28.2%	26.0%
Some college, no degree	409 ±117	13.8% ±3.8 pp	19.8%	19.1%
Associate’s degree	326 ±140	11.0% ±4.6 pp	10.0%	8.8%
Bachelor’s degree	331 ±158	11.2% ±5.3 pp	19.8%	21.6%
Graduate or professional degree	211 ±99	7.1% ±3.3 pp	12.3%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 4,584
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Same house	4,162 ±201	90.8% ±4.3 pp	87.2%	87.7%
Moved within same county	200 ±77	4.4% ±1.7 pp	5.5%	6.3%
Moved from a different county in the same state	197 ±165 · low precision	4.3% ±3.6 pp · low precision	3.1%	3.1%
Moved from a different state	6 ±11 · low precision	0.1% ±0.2 pp · low precision	3.7%	2.3%
Moved from abroad	19 ±29 · low precision	0.4% ±0.6 pp · low precision	0.4%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

13.3% of Barnwell residents (±4.7 percentage points) had no health insurance coverage when surveyed, compared with 9.6% in South Carolina and 8.4% nationally. 87.1% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Barnwell	South Carolina	U.S.	Compared with South Carolina
People without health insurance Civilian noninstitutionalized population	13.3% ±4.7 pp	9.6%	8.4%	Not statistically different
Households with a broadband subscription Households	87.1% ±5.9 pp	88.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	3.4% ±1.9 pp · low precision	8.3%	6.2%	Lower

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Barnwell . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Barnwell housing and cost context or return to the city profile.