Mountain Home, Idaho demographics

Mountain Home, ID demographics: median age 31.7; 22.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Mountain Home city, Idaho · Incorporated city · GEOID 1654730. The survey estimates a population of 16,493 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Mountain Home is 31.7 years, with a 90% margin of error of 0.8 years. There are 6,349 households (±261). 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	31.7 ±0.8	37.3 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 16,493
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Under 18	4,136 ±447	25.1% ±2.7 pp	24.1%	22.0%
18–34	4,954 ±404	30.0% ±2.4 pp	22.8%	22.8%
35–64	5,220 ±439	31.6% ±2.7 pp	36.1%	38.0%
65 and older	2,183 ±330	13.2% ±2.0 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 16,493
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Male	8,559 ±305	51.9% ±1.8 pp	50.3%	49.5%
Female	7,934 ±300	48.1% ±1.8 pp	49.7%	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: 16,493
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
White alone	11,983 ±426	72.7% ±2.6 pp	81.7%	61.0%
Black or African American alone	525 ±204	3.2% ±1.2 pp	0.8%	12.2%
American Indian and Alaska Native alone	219 ±124 · low precision	1.3% ±0.8 pp · low precision	1.2%	0.9%
Asian alone	566 ±146	3.4% ±0.9 pp	1.4%	6.0%
Native Hawaiian and Other Pacific Islander alone	95 ±59 · low precision	0.6% ±0.4 pp · low precision	0.2%	0.2%
Some other race alone	759 ±268	4.6% ±1.6 pp	5.1%	7.1%
Two or more races	2,346 ±366	14.2% ±2.2 pp	9.7%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 16,493
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Not Hispanic or Latino	13,619 ±311	82.6% ±1.9 pp	86.4%	80.7%
Hispanic or Latino	2,874 ±318	17.4% ±1.9 pp	13.6%	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: 6,349
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Married-couple family	2,760 ±278	43.5% ±4.0 pp	55.1%	46.9%
Other family: male householder, no spouse present	234 ±109	3.7% ±1.7 pp	4.7%	5.1%
Other family: female householder, no spouse present	768 ±218	12.1% ±3.4 pp	8.7%	12.2%
Nonfamily: householder living alone	1,997 ±286	31.5% ±4.3 pp	24.4%	28.7%
Nonfamily: householder not living alone	590 ±172	9.3% ±2.7 pp	7.1%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 6,349
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Households with people under 18	2,179 ±229	34.3% ±3.3 pp	31.9%	29.5%
Households without people under 18	4,170 ±318	65.7% ±4.2 pp	68.1%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 6,349
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
One-person nonfamily households	1,997 ±286	31.5% ±4.3 pp	24.4%	28.7%
Two-person households	2,037 ±310	32.1% ±4.7 pp	37.0%	33.8%
Three-person households	919 ±199	14.5% ±3.1 pp	14.5%	15.3%
Four-person households	797 ±162	12.6% ±2.5 pp	12.2%	12.6%
Five-person households	366 ±142	5.8% ±2.2 pp	6.6%	5.9%
Six-person households	170 ±100 · low precision	2.7% ±1.6 pp · low precision	3.3%	2.2%
Seven or more people	63 ±53 · low precision	1.0% ±0.8 pp · low precision	2.1%	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: 16,493
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Native	14,976 ±354	90.8% ±2.1 pp	94.1%	85.9%
Foreign born	1,517 ±348	9.2% ±2.1 pp	5.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 15,164
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
English only	13,058 ±486	86.1% ±3.1 pp	89.0%	77.7%
Spanish	1,252 ±305	8.3% ±2.0 pp	8.1%	13.6%
French, Haitian, or Cajun	84 ±103 · low precision	0.6% ±0.7 pp · low precision	0.2%	0.7%
German or other West Germanic	14 ±21 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	317 ±327 · low precision	2.1% ±2.2 pp · low precision	0.5%	0.7%
Other Indo-European	8 ±13 · low precision	0.1% ±0.1 pp · low precision	0.5%	2.0%
Korean	37 ±53 · low precision	0.2% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	96 ±100 · low precision	0.6% ±0.7 pp · low precision	0.2%	1.1%
Vietnamese	0 ±19 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	155 ±78 · low precision	1.0% ±0.5 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	83 ±62 · low precision	0.5% ±0.4 pp · low precision	0.4%	1.1%
Arabic	11 ±18 · low precision	0.1% ±0.1 pp · low precision	0.1%	0.5%
Other and unspecified	49 ±44 · low precision	0.3% ±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: 10,509
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Less than high school graduate	1,001 ±259	9.5% ±2.4 pp	8.1%	10.4%
High school graduate or equivalency	3,395 ±477	32.3% ±4.4 pp	26.1%	26.0%
Some college, no degree	2,467 ±400	23.5% ±3.7 pp	24.2%	19.1%
Associate’s degree	1,331 ±224	12.7% ±2.1 pp	9.7%	8.8%
Bachelor’s degree	1,712 ±331	16.3% ±3.1 pp	21.3%	21.6%
Graduate or professional degree	603 ±175	5.7% ±1.7 pp	10.5%	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: 16,343
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Same house	13,049 ±561	79.8% ±3.4 pp	84.9%	87.7%
Moved within same county	1,874 ±578	11.5% ±3.5 pp	7.0%	6.3%
Moved from a different county in the same state	433 ±164	2.6% ±1.0 pp	3.1%	3.1%
Moved from a different state	812 ±286	5.0% ±1.7 pp	4.6%	2.3%
Moved from abroad	175 ±143 · low precision	1.1% ±0.9 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

6.2% of Mountain Home residents (±1.4 percentage points) had no health insurance coverage when surveyed, compared with 9.1% in Idaho and 8.4% nationally. 93.0% 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	Mountain Home	Idaho	U.S.	Compared with Idaho
People without health insurance Civilian noninstitutionalized population	6.2% ±1.4 pp	9.1%	8.4%	Lower
Households with a broadband subscription Households	93.0% ±2.1 pp	91.9%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	23.9% ±2.6 pp	8.0%	6.2%	Higher

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 Mountain Home . 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 Mountain Home housing and cost context or return to the city profile.