St. Anthony, Idaho demographics

St. Anthony, ID demographics: median age 32.4; 13.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · St. Anthony city, Idaho · Incorporated city · GEOID 1671020. The survey estimates a population of 3,911 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in St. Anthony is 32.4 years, with a 90% margin of error of 2.7 years. There are 1,258 households (±133). 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	32.4 ±2.7	37.3 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Under 18	916 ±144	23.4% ±3.7 pp	24.1%	22.0%
18–34	1,173 ±204	30.0% ±5.2 pp	22.8%	22.8%
35–64	1,247 ±196	31.9% ±5.0 pp	36.1%	38.0%
65 and older	575 ±122	14.7% ±3.1 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Male	2,030 ±153	51.9% ±3.9 pp	50.3%	49.5%
Female	1,881 ±150	48.1% ±3.8 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: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
White alone	2,809 ±279	71.8% ±7.1 pp	81.7%	61.0%
Black or African American alone	15 ±17 · low precision	0.4% ±0.4 pp · low precision	0.8%	12.2%
American Indian and Alaska Native alone	120 ±85 · low precision	3.1% ±2.2 pp · low precision	1.2%	0.9%
Asian alone	15 ±12 · low precision	0.4% ±0.3 pp · low precision	1.4%	6.0%
Native Hawaiian and Other Pacific Islander alone	9 ±14 · low precision	0.2% ±0.4 pp · low precision	0.2%	0.2%
Some other race alone	483 ±263 · low precision	12.3% ±6.7 pp · low precision	5.1%	7.1%
Two or more races	460 ±191	11.8% ±4.9 pp	9.7%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Not Hispanic or Latino	3,050 ±188	78.0% ±4.8 pp	86.4%	80.7%
Hispanic or Latino	861 ±190	22.0% ±4.9 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: 1,258
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Married-couple family	584 ±114	46.4% ±7.6 pp	55.1%	46.9%
Other family: male householder, no spouse present	121 ±67 · low precision	9.6% ±5.2 pp · low precision	4.7%	5.1%
Other family: female householder, no spouse present	217 ±78	17.2% ±5.9 pp	8.7%	12.2%
Nonfamily: householder living alone	302 ±113	24.0% ±8.6 pp	24.4%	28.7%
Nonfamily: householder not living alone	34 ±28 · low precision	2.7% ±2.2 pp · low precision	7.1%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,258
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Households with people under 18	500 ±111	39.7% ±7.8 pp	31.9%	29.5%
Households without people under 18	758 ±177	60.3% ±12.5 pp	68.1%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,258
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
One-person nonfamily households	302 ±113	24.0% ±8.6 pp	24.4%	28.7%
Two-person households	404 ±113	32.1% ±8.3 pp	37.0%	33.8%
Three-person households	220 ±83	17.5% ±6.3 pp	14.5%	15.3%
Four-person households	178 ±92 · low precision	14.1% ±7.1 pp · low precision	12.2%	12.6%
Five-person households	98 ±55 · low precision	7.8% ±4.3 pp · low precision	6.6%	5.9%
Six-person households	30 ±26 · low precision	2.4% ±2.0 pp · low precision	3.3%	2.2%
Seven or more people	26 ±24 · low precision	2.1% ±1.9 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: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Native	3,675 ±119	94.0% ±3.0 pp	94.1%	85.9%
Foreign born	236 ±118	6.0% ±3.0 pp	5.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 3,699
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
English only	3,314 ±170	89.6% ±4.1 pp	89.0%	77.7%
Spanish	362 ±148	9.8% ±4.0 pp	8.1%	13.6%
French, Haitian, or Cajun	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.7%
German or other West Germanic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.5%	0.7%
Other Indo-European	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.5%	2.0%
Korean	4 ±10 · low precision	0.1% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	6 ±12 · low precision	0.2% ±0.3 pp · low precision	0.2%	1.1%
Vietnamese	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	5 ±10 · low precision	0.1% ±0.3 pp · low precision	0.4%	1.1%
Arabic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.5%
Other and unspecified	8 ±17 · low precision	0.2% ±0.5 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: 2,632
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Less than high school graduate	360 ±171	13.7% ±6.4 pp	8.1%	10.4%
High school graduate or equivalency	1,062 ±216	40.3% ±7.9 pp	26.1%	26.0%
Some college, no degree	599 ±142	22.8% ±5.2 pp	24.2%	19.1%
Associate’s degree	261 ±86	9.9% ±3.2 pp	9.7%	8.8%
Bachelor’s degree	245 ±74	9.3% ±2.8 pp	21.3%	21.6%
Graduate or professional degree	105 ±61 · low precision	4.0% ±2.3 pp · low precision	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: 3,864
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Same house	3,339 ±148	86.4% ±3.7 pp	84.9%	87.7%
Moved within same county	144 ±86 · low precision	3.7% ±2.2 pp · low precision	7.0%	6.3%
Moved from a different county in the same state	185 ±77	4.8% ±2.0 pp	3.1%	3.1%
Moved from a different state	178 ±93 · low precision	4.6% ±2.4 pp · low precision	4.6%	2.3%
Moved from abroad	18 ±22 · low precision	0.5% ±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

12.3% of St. Anthony residents (±4.3 percentage points) had no health insurance coverage when surveyed, compared with 9.1% in Idaho and 8.4% nationally. 91.7% 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	St. Anthony	Idaho	U.S.	Compared with Idaho
People without health insurance Civilian noninstitutionalized population	12.3% ±4.3 pp	9.1%	8.4%	Not statistically different
Households with a broadband subscription Households	91.7% ±2.2 pp	91.9%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	7.7% ±2.5 pp	8.0%	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 St. Anthony . 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 St. Anthony housing and cost context or return to the city profile.