Hilton Head Island, South Carolina demographics

Hilton Head Island, SC demographics: median age 59.8; 56.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Hilton Head Island town, South Carolina · Incorporated town · GEOID 4534045. The survey estimates a population of 37,911 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Hilton Head Island is 59.8 years, with a 90% margin of error of 1.1 years. There are 18,326 households (±574). 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	59.8 ±1.1	40.2 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 37,911
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Under 18	4,520 ±529	11.9% ±1.4 pp	21.4%	22.0%
18–34	4,046 ±582	10.7% ±1.5 pp	22.0%	22.8%
35–64	14,490 ±954	38.2% ±2.5 pp	37.7%	38.0%
65 and older	14,855 ±847	39.2% ±2.2 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 37,911
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Male	18,748 ±570	49.5% ±1.5 pp	48.7%	49.5%
Female	19,163 ±575	50.5% ±1.5 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: 37,911
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
White alone	28,712 ±1,029	75.7% ±2.7 pp	63.3%	61.0%
Black or African American alone	2,720 ±533	7.2% ±1.4 pp	24.8%	12.2%
American Indian and Alaska Native alone	171 ±228 · low precision	0.5% ±0.6 pp · low precision	0.4%	0.9%
Asian alone	382 ±211 · low precision	1.0% ±0.6 pp · low precision	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	3,337 ±816	8.8% ±2.2 pp	2.8%	7.1%
Two or more races	2,589 ±868	6.8% ±2.3 pp	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 37,911
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Not Hispanic or Latino	32,105 ±923	84.7% ±2.4 pp	92.6%	80.7%
Hispanic or Latino	5,806 ±915	15.3% ±2.4 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: 18,326
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Married-couple family	9,899 ±540	54.0% ±2.4 pp	47.1%	46.9%
Other family: male householder, no spouse present	412 ±167	2.2% ±0.9 pp	4.5%	5.1%
Other family: female householder, no spouse present	1,296 ±257	7.1% ±1.4 pp	13.4%	12.2%
Nonfamily: householder living alone	5,491 ±578	30.0% ±3.0 pp	29.2%	28.7%
Nonfamily: householder not living alone	1,228 ±404	6.7% ±2.2 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 18,326
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Households with people under 18	2,634 ±301	14.4% ±1.6 pp	28.6%	29.5%
Households without people under 18	15,692 ±678	85.6% ±2.5 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 18,326
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
One-person nonfamily households	5,491 ±578	30.0% ±3.0 pp	29.2%	28.7%
Two-person households	9,339 ±682	51.0% ±3.4 pp	36.3%	33.8%
Three-person households	1,782 ±299	9.7% ±1.6 pp	15.4%	15.3%
Four-person households	1,101 ±233	6.0% ±1.3 pp	11.6%	12.6%
Five-person households	309 ±122	1.7% ±0.7 pp	5.0%	5.9%
Six-person households	146 ±112 · low precision	0.8% ±0.6 pp · low precision	1.7%	2.2%
Seven or more people	158 ±157 · low precision	0.9% ±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: 37,911
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Native	32,674 ±685	86.2% ±1.8 pp	94.2%	85.9%
Foreign born	5,237 ±678	13.8% ±1.8 pp	5.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 36,938
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
English only	30,884 ±896	83.6% ±2.3 pp	91.6%	77.7%
Spanish	4,698 ±792	12.7% ±2.1 pp	5.3%	13.6%
French, Haitian, or Cajun	434 ±220 · low precision	1.2% ±0.6 pp · low precision	0.3%	0.7%
German or other West Germanic	184 ±99 · low precision	0.5% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	131 ±151 · low precision	0.4% ±0.4 pp · low precision	0.4%	0.7%
Other Indo-European	128 ±82 · low precision	0.3% ±0.2 pp · low precision	0.8%	2.0%
Korean	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	159 ±155 · low precision	0.4% ±0.4 pp · low precision	0.2%	1.1%
Vietnamese	77 ±91 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	36 ±55 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	74 ±73 · low precision	0.2% ±0.2 pp · low precision	0.4%	1.1%
Arabic	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Other and unspecified	133 ±117 · low precision	0.4% ±0.3 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: 31,913
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Less than high school graduate	2,055 ±449	6.4% ±1.4 pp	9.9%	10.4%
High school graduate or equivalency	5,332 ±738	16.7% ±2.3 pp	28.2%	26.0%
Some college, no degree	4,859 ±524	15.2% ±1.6 pp	19.8%	19.1%
Associate’s degree	1,748 ±325	5.5% ±1.0 pp	10.0%	8.8%
Bachelor’s degree	10,032 ±708	31.4% ±2.1 pp	19.8%	21.6%
Graduate or professional degree	7,887 ±670	24.7% ±2.1 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: 37,835
Category	Count ± MOE	Share ± MOE (pp)	South Carolina	U.S.
Same house	32,646 ±671	86.3% ±1.8 pp	87.2%	87.7%
Moved within same county	1,989 ±566	5.3% ±1.5 pp	5.5%	6.3%
Moved from a different county in the same state	665 ±298	1.8% ±0.8 pp	3.1%	3.1%
Moved from a different state	2,276 ±444	6.0% ±1.2 pp	3.7%	2.3%
Moved from abroad	259 ±211 · low precision	0.7% ±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

10.2% of Hilton Head Island residents (±1.7 percentage points) had no health insurance coverage when surveyed, compared with 9.6% in South Carolina and 8.4% nationally. 92.2% 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	Hilton Head Island	South Carolina	U.S.	Compared with South Carolina
People without health insurance Civilian noninstitutionalized population	10.2% ±1.7 pp	9.6%	8.4%	Not statistically different
Households with a broadband subscription Households	92.2% ±1.9 pp	88.8%	91.0%	Higher
Veterans Civilian population age 18 and older	7.5% ±1.1 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 Hilton Head Island . 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 Hilton Head Island housing and cost context or return to the city profile.