Milbank, South Dakota demographics

Milbank, SD demographics: median age 50.0; 31.2% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Milbank city, South Dakota · Incorporated city · GEOID 4642260. The survey estimates a population of 3,525 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Milbank is 50.0 years, with a 90% margin of error of 7.6 years. There are 1,530 households (±138). 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	50.0 ±7.6	38.0 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 3,525
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Under 18	709 ±137	20.1% ±3.9 pp	24.2%	22.0%
18–34	576 ±155	16.3% ±4.4 pp	21.9%	22.8%
35–64	1,205 ±224	34.2% ±6.3 pp	35.9%	38.0%
65 and older	1,035 ±215	29.4% ±6.1 pp	18.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 3,525
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Male	1,653 ±95	46.9% ±2.7 pp	50.8%	49.5%
Female	1,872 ±100	53.1% ±2.8 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: 3,525
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
White alone	3,131 ±167	88.8% ±4.7 pp	80.7%	61.0%
Black or African American alone	0 ±10 · low precision	0.0% ±0.3 pp · low precision	2.3%	12.2%
American Indian and Alaska Native alone	182 ±226 · low precision	5.2% ±6.4 pp · low precision	7.5%	0.9%
Asian alone	0 ±10 · low precision	0.0% ±0.3 pp · low precision	1.4%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.0%	0.2%
Some other race alone	139 ±180 · low precision	3.9% ±5.1 pp · low precision	1.6%	7.1%
Two or more races	73 ±81 · low precision	2.1% ±2.3 pp · low precision	6.5%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 3,525
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Not Hispanic or Latino	3,148 ±152	89.3% ±4.3 pp	95.2%	80.7%
Hispanic or Latino	377 ±152	10.7% ±4.3 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: 1,530
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Married-couple family	799 ±131	52.2% ±7.2 pp	48.3%	46.9%
Other family: male householder, no spouse present	0 ±10 · low precision	0.0% ±0.7 pp · low precision	4.8%	5.1%
Other family: female householder, no spouse present	80 ±64 · low precision	5.2% ±4.2 pp · low precision	8.1%	12.2%
Nonfamily: householder living alone	651 ±162	42.5% ±9.9 pp	31.9%	28.7%
Nonfamily: householder not living alone	0 ±10 · low precision	0.0% ±0.7 pp · low precision	6.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,530
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Households with people under 18	330 ±90	21.6% ±5.6 pp	29.0%	29.5%
Households without people under 18	1,200 ±155	78.4% ±7.3 pp	71.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,530
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
One-person nonfamily households	651 ±162	42.5% ±9.9 pp	31.9%	28.7%
Two-person households	466 ±137	30.5% ±8.5 pp	35.5%	33.8%
Three-person households	123 ±78 · low precision	8.0% ±5.0 pp · low precision	12.4%	15.3%
Four-person households	99 ±70 · low precision	6.5% ±4.5 pp · low precision	10.5%	12.6%
Five-person households	159 ±77	10.4% ±4.9 pp	6.1%	5.9%
Six-person households	32 ±40 · low precision	2.1% ±2.6 pp · low precision	2.2%	2.2%
Seven or more people	0 ±14 · low precision	0.0% ±0.9 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: 3,525
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Native	3,151 ±168	89.4% ±4.7 pp	96.0%	85.9%
Foreign born	374 ±166	10.6% ±4.7 pp	4.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 3,328
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
English only	2,931 ±184	88.1% ±5.2 pp	92.9%	77.7%
Spanish	339 ±171 · low precision	10.2% ±5.1 pp · low precision	2.6%	13.6%
French, Haitian, or Cajun	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.7%
German or other West Germanic	6 ±9 · low precision	0.2% ±0.3 pp · low precision	0.8%	0.5%
Russian, Polish, or other Slavic	27 ±34 · low precision	0.8% ±1.0 pp · low precision	0.4%	0.7%
Other Indo-European	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.4%	2.0%
Korean	25 ±41 · low precision	0.8% ±1.2 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.1%	1.1%
Vietnamese	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.4%	1.1%
Arabic	0 ±10 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.5%
Other and unspecified	0 ±10 · low precision	0.0% ±0.3 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: 2,618
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Less than high school graduate	180 ±106 · low precision	6.9% ±4.0 pp · low precision	6.8%	10.4%
High school graduate or equivalency	954 ±184	36.4% ±6.8 pp	29.0%	26.0%
Some college, no degree	395 ±170	15.1% ±6.4 pp	19.9%	19.1%
Associate’s degree	273 ±98	10.4% ±3.7 pp	12.3%	8.8%
Bachelor’s degree	531 ±186	20.3% ±7.0 pp	21.9%	21.6%
Graduate or professional degree	285 ±116	10.9% ±4.4 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: 3,496
Category	Count ± MOE	Share ± MOE (pp)	South Dakota	U.S.
Same house	3,181 ±130	91.0% ±3.5 pp	87.0%	87.7%
Moved within same county	162 ±88 · low precision	4.6% ±2.5 pp · low precision	5.7%	6.3%
Moved from a different county in the same state	71 ±86 · low precision	2.0% ±2.5 pp · low precision	3.7%	3.1%
Moved from a different state	82 ±84 · low precision	2.3% ±2.4 pp · low precision	3.2%	2.3%
Moved from abroad	0 ±10 · low precision	0.0% ±0.3 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

2.6% of Milbank residents (±2.3 percentage points) had no health insurance coverage when surveyed, compared with 9.0% in South Dakota and 8.4% nationally. 82.4% 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	Milbank	South Dakota	U.S.	Compared with South Dakota
People without health insurance Civilian noninstitutionalized population	2.6% ±2.3 pp · low precision	9.0%	8.4%	Lower
Households with a broadband subscription Households	82.4% ±3.4 pp	89.6%	91.0%	Lower
Veterans Civilian population age 18 and older	10.7% ±4.2 pp	7.9%	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 Milbank . 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 Milbank housing and cost context or return to the city profile.