Cayce, South Carolina demographics

Cayce, SC demographics: median age 37.7; 31.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Cayce city, South Carolina · Incorporated city · GEOID 4512655. The survey estimates a population of 13,741 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Cayce is 37.7 years, with a 90% margin of error of 3.2 years. There are 6,556 households (±360). 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	37.7 ±3.2	40.2 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 13,741
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Under 18	2,111 ±443	15.4% ±3.1 pp	21.4%	22.0%
18–34	4,165 ±753	30.3% ±5.3 pp	22.0%	22.8%
35–64	5,046 ±557	36.7% ±3.7 pp	37.7%	38.0%
65 and older	2,419 ±400	17.6% ±2.8 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 13,741
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Male	7,458 ±524	54.3% ±2.9 pp	48.7%	49.5%
Female	6,283 ±651	45.7% ±4.2 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: 13,741
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
White alone	7,859 ±928	57.2% ±6.2 pp	63.3%	61.0%
Black or African American alone	3,542 ±756	25.8% ±5.4 pp	24.8%	12.2%
American Indian and Alaska Native alone	48 ±66 · low precision	0.3% ±0.5 pp · low precision	0.4%	0.9%
Asian alone	355 ±197 · low precision	2.6% ±1.4 pp · low precision	1.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±22 · low precision	0.0% ±0.2 pp · low precision	0.1%	0.2%
Some other race alone	602 ±428 · low precision	4.4% ±3.1 pp · low precision	2.8%	7.1%
Two or more races	1,335 ±414	9.7% ±3.0 pp	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 13,741
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Not Hispanic or Latino	12,140 ±807	88.3% ±4.2 pp	92.6%	80.7%
Hispanic or Latino	1,601 ±525	11.7% ±3.8 pp	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: 6,556
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Married-couple family	2,040 ±292	31.1% ±4.1 pp	47.1%	46.9%
Other family: male householder, no spouse present	513 ±259 · low precision	7.8% ±3.9 pp · low precision	4.5%	5.1%
Other family: female householder, no spouse present	652 ±176	9.9% ±2.6 pp	13.4%	12.2%
Nonfamily: householder living alone	2,435 ±380	37.1% ±5.4 pp	29.2%	28.7%
Nonfamily: householder not living alone	916 ±249	14.0% ±3.7 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 6,556
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Households with people under 18	1,347 ±235	20.5% ±3.4 pp	28.6%	29.5%
Households without people under 18	5,209 ±476	79.5% ±5.8 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 6,556
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
One-person nonfamily households	2,435 ±380	37.1% ±5.4 pp	29.2%	28.7%
Two-person households	2,389 ±424	36.4% ±6.1 pp	36.3%	33.8%
Three-person households	751 ±194	11.5% ±2.9 pp	15.4%	15.3%
Four-person households	790 ±211	12.1% ±3.2 pp	11.6%	12.6%
Five-person households	135 ±100 · low precision	2.1% ±1.5 pp · low precision	5.0%	5.9%
Six-person households	45 ±46 · low precision	0.7% ±0.7 pp · low precision	1.7%	2.2%
Seven or more people	11 ±28 · low precision	0.2% ±0.4 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: 13,741
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Native	12,925 ±732	94.1% ±3.1 pp	94.2%	85.9%
Foreign born	816 ±313	5.9% ±2.3 pp	5.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 13,072
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
English only	11,782 ±885	90.1% ±4.8 pp	91.6%	77.7%
Spanish	1,007 ±410	7.7% ±3.1 pp	5.3%	13.6%
French, Haitian, or Cajun	5 ±9 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	8 ±24 · low precision	0.1% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	16 ±28 · low precision	0.1% ±0.2 pp · low precision	0.4%	0.7%
Other Indo-European	127 ±94 · low precision	1.0% ±0.7 pp · low precision	0.8%	2.0%
Korean	0 ±22 · low precision	0.0% ±0.2 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	44 ±51 · low precision	0.3% ±0.4 pp · low precision	0.2%	1.1%
Vietnamese	0 ±22 · low precision	0.0% ±0.2 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	0 ±22 · low precision	0.0% ±0.2 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	33 ±82 · low precision	0.3% ±0.6 pp · low precision	0.4%	1.1%
Arabic	12 ±25 · low precision	0.1% ±0.2 pp · low precision	0.1%	0.5%
Other and unspecified	38 ±60 · low precision	0.3% ±0.5 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: 9,419
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Less than high school graduate	687 ±286	7.3% ±3.0 pp	9.9%	10.4%
High school graduate or equivalency	2,936 ±540	31.2% ±5.5 pp	28.2%	26.0%
Some college, no degree	1,937 ±332	20.6% ±3.4 pp	19.8%	19.1%
Associate’s degree	928 ±214	9.9% ±2.2 pp	10.0%	8.8%
Bachelor’s degree	1,582 ±305	16.8% ±3.1 pp	19.8%	21.6%
Graduate or professional degree	1,349 ±278	14.3% ±2.8 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: 13,629
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Same house	11,179 ±573	82.0% ±1.6 pp	87.2%	87.7%
Moved within same county	1,025 ±389	7.5% ±2.8 pp	5.5%	6.3%
Moved from a different county in the same state	1,180 ±487	8.7% ±3.5 pp	3.1%	3.1%
Moved from a different state	158 ±92 · low precision	1.2% ±0.7 pp · low precision	3.7%	2.3%
Moved from abroad	87 ±99 · low precision	0.6% ±0.7 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

11.4% of Cayce residents (±3.3 percentage points) had no health insurance coverage when surveyed, compared with 9.6% in South Carolina and 8.4% nationally. 89.4% 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	Cayce	South Carolina	U.S.	Compared with South Carolina
People without health insurance Civilian noninstitutionalized population	11.4% ±3.3 pp	9.6%	8.4%	Not statistically different
Households with a broadband subscription Households	89.4% ±2.7 pp	88.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	9.1% ±2.1 pp	8.3%	6.2%	Not statistically different

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 Cayce . 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 Cayce housing and cost context or return to the city profile.