Rexburg, Idaho demographics

Rexburg, ID demographics: median age 21.0; 42.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Rexburg city, Idaho · Incorporated city · GEOID 1667420. The survey estimates a population of 40,543 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Rexburg is 21.0 years, with a 90% margin of error of 0.3 years. There are 9,410 households (±431). 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	21.0 ±0.3	37.3 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 40,543
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Under 18	6,232 ±372	15.4% ±0.9 pp	24.1%	22.0%
18–34	29,447 ±1,096	72.6% ±2.7 pp	22.8%	22.8%
35–64	3,699 ±361	9.1% ±0.9 pp	36.1%	38.0%
65 and older	1,165 ±191	2.9% ±0.5 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 40,543
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Male	17,938 ±375	44.2% ±0.9 pp	50.3%	49.5%
Female	22,605 ±375	55.8% ±0.9 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: 40,543
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
White alone	34,540 ±757	85.2% ±1.9 pp	81.7%	61.0%
Black or African American alone	509 ±208	1.3% ±0.5 pp	0.8%	12.2%
American Indian and Alaska Native alone	37 ±50 · low precision	0.1% ±0.1 pp · low precision	1.2%	0.9%
Asian alone	697 ±177	1.7% ±0.4 pp	1.4%	6.0%
Native Hawaiian and Other Pacific Islander alone	112 ±64 · low precision	0.3% ±0.2 pp · low precision	0.2%	0.2%
Some other race alone	1,792 ±647	4.4% ±1.6 pp	5.1%	7.1%
Two or more races	2,856 ±544	7.0% ±1.3 pp	9.7%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 40,543
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Not Hispanic or Latino	36,016 ±281	88.8% ±0.7 pp	86.4%	80.7%
Hispanic or Latino	4,527 ±279	11.2% ±0.7 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: 9,410
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Married-couple family	5,677 ±620	60.3% ±6.0 pp	55.1%	46.9%
Other family: male householder, no spouse present	86 ±55 · low precision	0.9% ±0.6 pp · low precision	4.7%	5.1%
Other family: female householder, no spouse present	703 ±349	7.5% ±3.7 pp	8.7%	12.2%
Nonfamily: householder living alone	1,044 ±305	11.1% ±3.2 pp	24.4%	28.7%
Nonfamily: householder not living alone	1,900 ±685	20.2% ±7.2 pp	7.1%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 9,410
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Households with people under 18	2,737 ±327	29.1% ±3.2 pp	31.9%	29.5%
Households without people under 18	6,673 ±610	70.9% ±5.6 pp	68.1%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 9,410
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
One-person nonfamily households	1,044 ±305	11.1% ±3.2 pp	24.4%	28.7%
Two-person households	4,295 ±919	45.6% ±9.5 pp	37.0%	33.8%
Three-person households	1,046 ±236	11.1% ±2.5 pp	14.5%	15.3%
Four-person households	911 ±234	9.7% ±2.4 pp	12.2%	12.6%
Five-person households	860 ±404	9.1% ±4.3 pp	6.6%	5.9%
Six-person households	898 ±333	9.5% ±3.5 pp	3.3%	2.2%
Seven or more people	356 ±99	3.8% ±1.0 pp	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: 40,543
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Native	37,893 ±780	93.5% ±1.9 pp	94.1%	85.9%
Foreign born	2,650 ±778	6.5% ±1.9 pp	5.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 37,866
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
English only	33,553 ±594	88.6% ±1.4 pp	89.0%	77.7%
Spanish	2,766 ±512	7.3% ±1.4 pp	8.1%	13.6%
French, Haitian, or Cajun	89 ±79 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.7%
German or other West Germanic	30 ±38 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	119 ±76 · low precision	0.3% ±0.2 pp · low precision	0.5%	0.7%
Other Indo-European	435 ±243 · low precision	1.1% ±0.6 pp · low precision	0.5%	2.0%
Korean	100 ±122 · low precision	0.3% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	440 ±226 · low precision	1.2% ±0.6 pp · low precision	0.2%	1.1%
Vietnamese	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	94 ±73 · low precision	0.2% ±0.2 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	74 ±60 · low precision	0.2% ±0.2 pp · low precision	0.4%	1.1%
Arabic	10 ±20 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Other and unspecified	156 ±91 · low precision	0.4% ±0.2 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: 10,588
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Less than high school graduate	280 ±172 · low precision	2.6% ±1.6 pp · low precision	8.1%	10.4%
High school graduate or equivalency	1,278 ±256	12.1% ±2.4 pp	26.1%	26.0%
Some college, no degree	3,108 ±407	29.4% ±3.7 pp	24.2%	19.1%
Associate’s degree	1,470 ±234	13.9% ±2.2 pp	9.7%	8.8%
Bachelor’s degree	3,250 ±418	30.7% ±3.8 pp	21.3%	21.6%
Graduate or professional degree	1,202 ±246	11.4% ±2.3 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: 39,789
Category	Count ± MOE	Share ± MOE (pp)	Idaho	U.S.
Same house	20,912 ±1,181	52.6% ±3.0 pp	84.9%	87.7%
Moved within same county	5,042 ±668	12.7% ±1.7 pp	7.0%	6.3%
Moved from a different county in the same state	4,349 ±872	10.9% ±2.2 pp	3.1%	3.1%
Moved from a different state	8,195 ±982	20.6% ±2.5 pp	4.6%	2.3%
Moved from abroad	1,291 ±552	3.2% ±1.4 pp	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

5.7% of Rexburg residents (±1.9 percentage points) had no health insurance coverage when surveyed, compared with 9.1% in Idaho and 8.4% nationally. 72.0% 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	Rexburg	Idaho	U.S.	Compared with Idaho
People without health insurance Civilian noninstitutionalized population	5.7% ±1.9 pp	9.1%	8.4%	Lower
Households with a broadband subscription Households	72.0% ±6.2 pp	91.9%	91.0%	Lower
Veterans Civilian population age 18 and older	0.9% ±0.3 pp	8.0%	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 Rexburg . 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 Rexburg housing and cost context or return to the city profile.