Allendale, South Carolina demographics

Allendale, SC demographics: median age 39.4; 20.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Allendale town, South Carolina · Incorporated town · GEOID 4500955. The survey estimates a population of 2,653 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Allendale is 39.4 years, with a 90% margin of error of 6.0 years. There are 1,256 households (±174). 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	39.4 ±6.0	40.2 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 2,653
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Under 18	696 ±173	26.2% ±5.3 pp	21.4%	22.0%
18–34	446 ±163	16.8% ±5.6 pp	22.0%	22.8%
35–64	1,038 ±248	39.1% ±7.3 pp	37.7%	38.0%
65 and older	473 ±140	17.8% ±4.6 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 2,653
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Male	1,195 ±154	45.0% ±8.8 pp	48.7%	49.5%
Female	1,458 ±339	55.0% ±9.8 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: 2,653
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
White alone	561 ±155	21.1% ±4.9 pp	63.3%	61.0%
Black or African American alone	1,669 ±541	62.9% ±18.1 pp	24.8%	12.2%
American Indian and Alaska Native alone	0 ±14 · low precision	0.0% ±0.5 pp · low precision	0.4%	0.9%
Asian alone	295 ±164 · low precision	11.1% ±6.0 pp · low precision	1.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	10 ±18 · low precision	0.4% ±0.7 pp · low precision	0.1%	0.2%
Some other race alone	109 ±167 · low precision	4.1% ±6.3 pp · low precision	2.8%	7.1%
Two or more races	9 ±14 · low precision	0.3% ±0.5 pp · low precision	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 2,653
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Not Hispanic or Latino	2,133 ±522	80.4% ±15.7 pp	92.6%	80.7%
Hispanic or Latino	520 ±290 · low precision	19.6% ±10.5 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: 1,256
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Married-couple family	346 ±121	27.5% ±8.8 pp	47.1%	46.9%
Other family: male householder, no spouse present	87 ±68 · low precision	6.9% ±5.3 pp · low precision	4.5%	5.1%
Other family: female householder, no spouse present	229 ±137 · low precision	18.2% ±10.6 pp · low precision	13.4%	12.2%
Nonfamily: householder living alone	407 ±122	32.4% ±8.6 pp	29.2%	28.7%
Nonfamily: householder not living alone	187 ±97 · low precision	14.9% ±7.4 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,256
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Households with people under 18	372 ±125	29.6% ±9.1 pp	28.6%	29.5%
Households without people under 18	884 ±164	70.4% ±8.7 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,256
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
One-person nonfamily households	407 ±122	32.4% ±8.6 pp	29.2%	28.7%
Two-person households	396 ±144	31.5% ±10.6 pp	36.3%	33.8%
Three-person households	167 ±108 · low precision	13.3% ±8.4 pp · low precision	15.4%	15.3%
Four-person households	69 ±65 · low precision	5.5% ±5.1 pp · low precision	11.6%	12.6%
Five-person households	6 ±18 · low precision	0.5% ±1.4 pp · low precision	5.0%	5.9%
Six-person households	193 ±114 · low precision	15.4% ±8.8 pp · low precision	1.7%	2.2%
Seven or more people	18 ±30 · low precision	1.4% ±2.3 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: 2,653
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Native	2,637 ±392	99.4% ±1.2 pp	94.2%	85.9%
Foreign born	16 ±23 · low precision	0.6% ±0.9 pp · low precision	5.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 2,434
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
English only	2,418 ±380	99.3% ±1.4 pp	91.6%	77.7%
Spanish	0 ±14 · low precision	0.0% ±0.6 pp · low precision	5.3%	13.6%
French, Haitian, or Cajun	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.4%	0.7%
Other Indo-European	6 ±13 · low precision	0.2% ±0.5 pp · low precision	0.8%	2.0%
Korean	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.2%	1.1%
Vietnamese	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	10 ±18 · low precision	0.4% ±0.7 pp · low precision	0.4%	1.1%
Arabic	0 ±14 · low precision	0.0% ±0.6 pp · low precision	0.1%	0.5%
Other and unspecified	0 ±14 · low precision	0.0% ±0.6 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: 1,804
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Less than high school graduate	251 ±131 · low precision	13.9% ±7.0 pp · low precision	9.9%	10.4%
High school graduate or equivalency	701 ±215	38.9% ±10.6 pp	28.2%	26.0%
Some college, no degree	337 ±126	18.7% ±6.5 pp	19.8%	19.1%
Associate’s degree	152 ±96 · low precision	8.4% ±5.2 pp · low precision	10.0%	8.8%
Bachelor’s degree	127 ±75 · low precision	7.0% ±4.0 pp · low precision	19.8%	21.6%
Graduate or professional degree	236 ±112	13.1% ±5.9 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: 2,570
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Same house	2,429 ±337	94.5% ±18.8 pp	87.2%	87.7%
Moved within same county	31 ±36 · low precision	1.2% ±1.4 pp · low precision	5.5%	6.3%
Moved from a different county in the same state	110 ±81 · low precision	4.3% ±3.1 pp · low precision	3.1%	3.1%
Moved from a different state	0 ±14 · low precision	0.0% ±0.5 pp · low precision	3.7%	2.3%
Moved from abroad	0 ±14 · low precision	0.0% ±0.5 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

14.4% of Allendale residents (±6.8 percentage points) had no health insurance coverage when surveyed, compared with 9.6% in South Carolina and 8.4% nationally. 74.6% 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	Allendale	South Carolina	U.S.	Compared with South Carolina
People without health insurance Civilian noninstitutionalized population	14.4% ±6.8 pp	9.6%	8.4%	Not statistically different
Households with a broadband subscription Households	74.6% ±8.9 pp	88.8%	91.0%	Lower
Veterans Civilian population age 18 and older	4.4% ±2.5 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 Allendale . 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 Allendale housing and cost context or return to the city profile.