Aberdeen, South Dakota demographics

Aberdeen, SD demographics: median age 36.4; 35.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Aberdeen city, South Dakota · Incorporated city · GEOID 4600100. The survey estimates a population of 28,189 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Aberdeen is 36.4 years, with a 90% margin of error of 0.9 years. There are 12,469 households (±358). 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 ±0.9	38.0 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 28,189
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Under 18	6,307 ±519	22.4% ±1.8 pp	24.2%	22.0%
18–34	7,163 ±552	25.4% ±2.0 pp	21.9%	22.8%
35–64	10,091 ±594	35.8% ±2.1 pp	35.9%	38.0%
65 and older	4,628 ±445	16.4% ±1.6 pp	18.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 28,189
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Male	13,767 ±313	48.8% ±1.1 pp	50.8%	49.5%
Female	14,422 ±311	51.2% ±1.1 pp	49.2%	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: 28,189
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
White alone	23,193 ±325	82.3% ±1.1 pp	80.7%	61.0%
Black or African American alone	561 ±284 · low precision	2.0% ±1.0 pp · low precision	2.3%	12.2%
American Indian and Alaska Native alone	1,068 ±206	3.8% ±0.7 pp	7.5%	0.9%
Asian alone	951 ±179	3.4% ±0.6 pp	1.4%	6.0%
Native Hawaiian and Other Pacific Islander alone	28 ±61 · low precision	0.1% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	533 ±353 · low precision	1.9% ±1.3 pp · low precision	1.6%	7.1%
Two or more races	1,855 ±493	6.6% ±1.7 pp	6.5%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 28,189
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Not Hispanic or Latino	26,626 ±208	94.5% ±0.7 pp	95.2%	80.7%
Hispanic or Latino	1,563 ±209	5.5% ±0.7 pp	4.8%	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: 12,469
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Married-couple family	4,904 ±409	39.3% ±3.1 pp	48.3%	46.9%
Other family: male householder, no spouse present	406 ±181	3.3% ±1.4 pp	4.8%	5.1%
Other family: female householder, no spouse present	1,065 ±226	8.5% ±1.8 pp	8.1%	12.2%
Nonfamily: householder living alone	5,134 ±592	41.2% ±4.6 pp	31.9%	28.7%
Nonfamily: householder not living alone	960 ±260	7.7% ±2.1 pp	6.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 12,469
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Households with people under 18	3,427 ±308	27.5% ±2.3 pp	29.0%	29.5%
Households without people under 18	9,042 ±460	72.5% ±3.0 pp	71.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 12,469
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
One-person nonfamily households	5,134 ±592	41.2% ±4.6 pp	31.9%	28.7%
Two-person households	3,724 ±428	29.9% ±3.3 pp	35.5%	33.8%
Three-person households	1,467 ±319	11.8% ±2.5 pp	12.4%	15.3%
Four-person households	1,180 ±252	9.5% ±2.0 pp	10.5%	12.6%
Five-person households	665 ±207	5.3% ±1.7 pp	6.1%	5.9%
Six-person households	192 ±109 · low precision	1.5% ±0.9 pp · low precision	2.2%	2.2%
Seven or more people	107 ±98 · low precision	0.9% ±0.8 pp · low precision	1.5%	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: 28,189
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Native	26,691 ±367	94.7% ±1.3 pp	96.0%	85.9%
Foreign born	1,498 ±373	5.3% ±1.3 pp	4.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 26,590
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
English only	24,534 ±444	92.3% ±1.5 pp	92.9%	77.7%
Spanish	769 ±171	2.9% ±0.6 pp	2.6%	13.6%
French, Haitian, or Cajun	70 ±107 · low precision	0.3% ±0.4 pp · low precision	0.1%	0.7%
German or other West Germanic	463 ±349 · low precision	1.7% ±1.3 pp · low precision	0.8%	0.5%
Russian, Polish, or other Slavic	31 ±32 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.7%
Other Indo-European	0 ±19 · low precision	0.0% ±0.1 pp · low precision	0.4%	2.0%
Korean	67 ±82 · low precision	0.3% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	25 ±36 · low precision	0.1% ±0.1 pp · low precision	0.1%	1.1%
Vietnamese	20 ±33 · low precision	0.1% ±0.1 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	124 ±162 · low precision	0.5% ±0.6 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	480 ±244 · low precision	1.8% ±0.9 pp · low precision	0.4%	1.1%
Arabic	0 ±19 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Other and unspecified	7 ±12 · low precision	0.0% ±0.0 pp · low precision	1.8%	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: 18,403
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Less than high school graduate	1,237 ±315	6.7% ±1.7 pp	6.8%	10.4%
High school graduate or equivalency	5,382 ±525	29.2% ±2.8 pp	29.0%	26.0%
Some college, no degree	3,335 ±526	18.1% ±2.8 pp	19.9%	19.1%
Associate’s degree	2,016 ±307	11.0% ±1.7 pp	12.3%	8.8%
Bachelor’s degree	4,461 ±443	24.2% ±2.4 pp	21.9%	21.6%
Graduate or professional degree	1,972 ±415	10.7% ±2.2 pp	10.0%	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: 27,835
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Same house	23,896 ±693	85.8% ±2.4 pp	87.0%	87.7%
Moved within same county	2,008 ±464	7.2% ±1.7 pp	5.7%	6.3%
Moved from a different county in the same state	1,428 ±551	5.1% ±2.0 pp	3.7%	3.1%
Moved from a different state	467 ±200	1.7% ±0.7 pp	3.2%	2.3%
Moved from abroad	36 ±39 · low precision	0.1% ±0.1 pp · low precision	0.3%	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

5.5% of Aberdeen residents (±1.2 percentage points) had no health insurance coverage when surveyed, compared with 9.0% in South Dakota and 8.4% nationally. 87.7% 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	Aberdeen	South Dakota	U.S.	Compared with South Dakota
People without health insurance Civilian noninstitutionalized population	5.5% ±1.2 pp	9.0%	8.4%	Lower
Households with a broadband subscription Households	87.7% ±2.5 pp	89.6%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	5.9% ±1.3 pp	7.9%	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 Aberdeen . 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 Aberdeen housing and cost context or return to the city profile.