Fort Mill, South Carolina demographics

Fort Mill, SC demographics: median age 38.4; 57.6% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Fort Mill town, South Carolina · Incorporated town · GEOID 4526890. The survey estimates a population of 30,775 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Fort Mill is 38.4 years, with a 90% margin of error of 1.2 years. There are 11,139 households (±485). 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	38.4 ±1.2	40.2 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 30,775
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Under 18	9,285 ±751	30.2% ±2.4 pp	21.4%	22.0%
18–34	4,387 ±606	14.3% ±2.0 pp	22.0%	22.8%
35–64	13,256 ±957	43.1% ±3.1 pp	37.7%	38.0%
65 and older	3,847 ±458	12.5% ±1.5 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 30,775
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Male	14,939 ±450	48.5% ±1.5 pp	48.7%	49.5%
Female	15,836 ±445	51.5% ±1.4 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: 30,775
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
White alone	22,282 ±930	72.4% ±3.0 pp	63.3%	61.0%
Black or African American alone	3,973 ±731	12.9% ±2.4 pp	24.8%	12.2%
American Indian and Alaska Native alone	16 ±35 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.9%
Asian alone	1,697 ±492	5.5% ±1.6 pp	1.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.2%
Some other race alone	533 ±290 · low precision	1.7% ±0.9 pp · low precision	2.8%	7.1%
Two or more races	2,274 ±605	7.4% ±2.0 pp	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 30,775
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Not Hispanic or Latino	29,063 ±444	94.4% ±1.4 pp	92.6%	80.7%
Hispanic or Latino	1,712 ±446	5.6% ±1.4 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: 11,139
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Married-couple family	7,024 ±391	63.1% ±2.2 pp	47.1%	46.9%
Other family: male householder, no spouse present	590 ±194	5.3% ±1.7 pp	4.5%	5.1%
Other family: female householder, no spouse present	1,030 ±255	9.2% ±2.3 pp	13.4%	12.2%
Nonfamily: householder living alone	2,123 ±546	19.1% ±4.8 pp	29.2%	28.7%
Nonfamily: householder not living alone	372 ±158	3.3% ±1.4 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 11,139
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Households with people under 18	5,147 ±370	46.2% ±2.6 pp	28.6%	29.5%
Households without people under 18	5,992 ±689	53.8% ±5.7 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 11,139
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
One-person nonfamily households	2,123 ±546	19.1% ±4.8 pp	29.2%	28.7%
Two-person households	3,593 ±491	32.3% ±4.2 pp	36.3%	33.8%
Three-person households	1,904 ±333	17.1% ±2.9 pp	15.4%	15.3%
Four-person households	2,346 ±370	21.1% ±3.2 pp	11.6%	12.6%
Five-person households	694 ±259	6.2% ±2.3 pp	5.0%	5.9%
Six-person households	357 ±157	3.2% ±1.4 pp	1.7%	2.2%
Seven or more people	122 ±105 · low precision	1.1% ±0.9 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: 30,775
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Native	28,221 ±600	91.7% ±1.9 pp	94.2%	85.9%
Foreign born	2,554 ±608	8.3% ±2.0 pp	5.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 28,781
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
English only	26,372 ±653	91.6% ±1.9 pp	91.6%	77.7%
Spanish	746 ±322	2.6% ±1.1 pp	5.3%	13.6%
French, Haitian, or Cajun	111 ±90 · low precision	0.4% ±0.3 pp · low precision	0.3%	0.7%
German or other West Germanic	167 ±177 · low precision	0.6% ±0.6 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	107 ±116 · low precision	0.4% ±0.4 pp · low precision	0.4%	0.7%
Other Indo-European	563 ±298 · low precision	2.0% ±1.0 pp · low precision	0.8%	2.0%
Korean	10 ±18 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	88 ±100 · low precision	0.3% ±0.3 pp · low precision	0.2%	1.1%
Vietnamese	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	14 ±28 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	570 ±259	2.0% ±0.9 pp	0.4%	1.1%
Arabic	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Other and unspecified	33 ±53 · low precision	0.1% ±0.2 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: 20,169
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Less than high school graduate	539 ±208	2.7% ±1.0 pp	9.9%	10.4%
High school graduate or equivalency	2,999 ±584	14.9% ±2.9 pp	28.2%	26.0%
Some college, no degree	2,820 ±517	14.0% ±2.5 pp	19.8%	19.1%
Associate’s degree	2,191 ±501	10.9% ±2.5 pp	10.0%	8.8%
Bachelor’s degree	7,377 ±697	36.6% ±3.2 pp	19.8%	21.6%
Graduate or professional degree	4,243 ±565	21.0% ±2.7 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: 30,461
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Same house	27,639 ±742	90.7% ±2.4 pp	87.2%	87.7%
Moved within same county	925 ±407	3.0% ±1.3 pp	5.5%	6.3%
Moved from a different county in the same state	459 ±302 · low precision	1.5% ±1.0 pp · low precision	3.1%	3.1%
Moved from a different state	1,342 ±568	4.4% ±1.9 pp	3.7%	2.3%
Moved from abroad	96 ±96 · low precision	0.3% ±0.3 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

4.7% of Fort Mill residents (±1.3 percentage points) had no health insurance coverage when surveyed, compared with 9.6% in South Carolina and 8.4% nationally. 96.0% 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	Fort Mill	South Carolina	U.S.	Compared with South Carolina
People without health insurance Civilian noninstitutionalized population	4.7% ±1.3 pp	9.6%	8.4%	Lower
Households with a broadband subscription Households	96.0% ±5.9 pp	88.8%	91.0%	Higher
Veterans Civilian population age 18 and older	4.6% ±1.1 pp	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 Fort Mill . 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 Fort Mill housing and cost context or return to the city profile.