Miles City, Montana demographics

Miles City, MT demographics: median age 42.6; 25.5% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Miles City city, Montana · Incorporated city · GEOID 3049525. The survey estimates a population of 8,407 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Miles City is 42.6 years, with a 90% margin of error of 1.6 years. There are 3,608 households (±134). 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	42.6 ±1.6	40.4 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 8,407
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Under 18	1,597 ±132	19.0% ±1.6 pp	21.0%	22.0%
18–34	1,750 ±149	20.8% ±1.8 pp	21.9%	22.8%
35–64	3,408 ±260	40.5% ±3.1 pp	37.0%	38.0%
65 and older	1,652 ±181	19.7% ±2.1 pp	20.1%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 8,407
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Male	4,328 ±128	51.5% ±1.5 pp	50.7%	49.5%
Female	4,079 ±129	48.5% ±1.5 pp	49.3%	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: 8,407
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
White alone	7,583 ±103	90.2% ±1.2 pp	85.0%	61.0%
Black or African American alone	4 ±7 · low precision	0.0% ±0.1 pp · low precision	0.5%	12.2%
American Indian and Alaska Native alone	157 ±57	1.9% ±0.7 pp	5.6%	0.9%
Asian alone	50 ±31 · low precision	0.6% ±0.4 pp · low precision	0.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±16 · low precision	0.0% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	31 ±24 · low precision	0.4% ±0.3 pp · low precision	1.3%	7.1%
Two or more races	582 ±96	6.9% ±1.1 pp	6.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 8,407
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Not Hispanic or Latino	8,057 ±38	95.8% ±0.4 pp	95.4%	80.7%
Hispanic or Latino	350 ±32	4.2% ±0.4 pp	4.6%	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: 3,608
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Married-couple family	1,689 ±168	46.8% ±4.3 pp	48.4%	46.9%
Other family: male householder, no spouse present	138 ±68	3.8% ±1.9 pp	4.4%	5.1%
Other family: female householder, no spouse present	304 ±82	8.4% ±2.3 pp	7.5%	12.2%
Nonfamily: householder living alone	1,245 ±184	34.5% ±4.9 pp	31.4%	28.7%
Nonfamily: householder not living alone	232 ±97	6.4% ±2.7 pp	8.3%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 3,608
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Households with people under 18	1,032 ±127	28.6% ±3.4 pp	25.4%	29.5%
Households without people under 18	2,576 ±202	71.4% ±4.9 pp	74.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 3,608
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
One-person nonfamily households	1,245 ±184	34.5% ±4.9 pp	31.4%	28.7%
Two-person households	1,165 ±146	32.3% ±3.9 pp	38.2%	33.8%
Three-person households	454 ±111	12.6% ±3.0 pp	12.6%	15.3%
Four-person households	439 ±108	12.2% ±3.0 pp	10.6%	12.6%
Five-person households	172 ±70	4.8% ±1.9 pp	4.5%	5.9%
Six-person households	58 ±34 · low precision	1.6% ±0.9 pp · low precision	1.6%	2.2%
Seven or more people	75 ±43 · low precision	2.1% ±1.2 pp · low precision	1.1%	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: 8,407
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Native	8,282 ±68	98.5% ±0.8 pp	97.7%	85.9%
Foreign born	125 ±62	1.5% ±0.7 pp	2.3%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 8,013
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
English only	7,748 ±112	96.7% ±1.2 pp	95.8%	77.7%
Spanish	34 ±28 · low precision	0.4% ±0.3 pp · low precision	1.4%	13.6%
French, Haitian, or Cajun	15 ±12 · low precision	0.2% ±0.1 pp · low precision	0.2%	0.7%
German or other West Germanic	31 ±30 · low precision	0.4% ±0.4 pp · low precision	0.8%	0.5%
Russian, Polish, or other Slavic	44 ±39 · low precision	0.5% ±0.5 pp · low precision	0.2%	0.7%
Other Indo-European	0 ±16 · low precision	0.0% ±0.2 pp · low precision	0.3%	2.0%
Korean	0 ±16 · low precision	0.0% ±0.2 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	4 ±11 · low precision	0.0% ±0.1 pp · low precision	0.1%	1.1%
Vietnamese	25 ±28 · low precision	0.3% ±0.3 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	11 ±14 · low precision	0.1% ±0.2 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	19 ±22 · low precision	0.2% ±0.3 pp · low precision	0.2%	1.1%
Arabic	11 ±18 · low precision	0.1% ±0.2 pp · low precision	0.0%	0.5%
Other and unspecified	71 ±72 · low precision	0.9% ±0.9 pp · low precision	0.7%	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: 6,094
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Less than high school graduate	278 ±99	4.6% ±1.6 pp	5.4%	10.4%
High school graduate or equivalency	1,940 ±246	31.8% ±4.0 pp	27.5%	26.0%
Some college, no degree	1,584 ±259	26.0% ±4.2 pp	22.4%	19.1%
Associate’s degree	741 ±168	12.2% ±2.7 pp	9.6%	8.8%
Bachelor’s degree	1,116 ±180	18.3% ±2.9 pp	23.2%	21.6%
Graduate or professional degree	435 ±115	7.1% ±1.9 pp	12.0%	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: 8,302
Category	Count ± MOE	Share ± MOE (pp)	Montana	U.S.
Same house	6,805 ±277	82.0% ±3.3 pp	86.5%	87.7%
Moved within same county	723 ±231	8.7% ±2.8 pp	6.4%	6.3%
Moved from a different county in the same state	425 ±143	5.1% ±1.7 pp	3.0%	3.1%
Moved from a different state	325 ±115	3.9% ±1.4 pp	3.7%	2.3%
Moved from abroad	24 ±22 · low precision	0.3% ±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

8.5% of Miles City residents (±1.9 percentage points) had no health insurance coverage when surveyed, compared with 8.6% in Montana and 8.4% nationally. 88.7% 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	Miles City	Montana	U.S.	Compared with Montana
People without health insurance Civilian noninstitutionalized population	8.5% ±1.9 pp	8.6%	8.4%	Not statistically different
Households with a broadband subscription Households	88.7% ±3.7 pp	89.4%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	10.2% ±1.9 pp	9.0%	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 Miles City . 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 Miles City housing and cost context or return to the city profile.