County · Idaho
Fremont County, Idaho
Fremont County, Idaho. Fremont County had 14,208 residents in 2025 by the Census Bureau's estimate, up 6.1% since 2020, slower than Idaho (+10.4%). It holds 8 places (8 cities, villages and boroughs) and 4 census tracts. GEOID 16043.
Fremont County is one of the 2 counties of the Rexburg, ID micropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
14,208
Census Bureau estimate (no margin published)
2020 Census count: 13,388 · ACS 2020-2024: 13,943
Median household income
$72,683
±$5,715 (90% margin)
Idaho: $77,800
Median home value
$314,200
±$22,058 (90% margin)
Idaho: $418,600
Median gross rent
$864
±$129 (90% margin)
Idaho: $1,238
How many people live in Fremont County, and is it growing?
The 2020 Census counted 13,388 residents in Fremont County. The Census Bureau estimates 14,208 for July 1, 2025, up 6.1% since 2020, slower than Idaho (+10.4%). The 2020-2024 American Community Survey puts the population at 13,943 over 1,864 square miles of land.
| Measure | Fremont County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Total population | 13,943 | 1,934,262 | +923 |
| Households | 4,654±236 | 713,005 | +307 |
| Average household size | 2.88±0.15 | 2.64 | no clear change |
| Housing units | 8,810±35 | 795,014 | −173 |
Fremont County's population since 2000
From 11,819 in 2000 to 14,208 in 2025: up 20.2%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Fremont County?
Fremont County holds 8 places: 8 cities, villages and boroughs (incorporated places). The largest is St. Anthony with 3,990 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| St. Anthony | 3,606 | $53,152 |
|---|---|---|
| Ashton | 949 | $65,428 |
| Teton | 787 | $67,321 |
| Newdale | 337 | $85,625 |
| ParkerGEOID 1660760 | 302 | $93,750 |
| Island ParkGEOID 1640600 | 193 | $91,250 |
| DrummondGEOID 1622780 | 13 | not published |
| Warm RiverGEOID 1685420 | 4 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Fremont County?
The median resident of Fremont County is 40.0 years old; 24.0% are under 18 and 18.3% are 65 or older. The largest group is non-Hispanic white residents at 82.7%, then Hispanic or Latino residents (of any race) at 12.4%. 5.5% of residents were born outside the United States.
| Measure | Fremont County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.0±0.7 | 37.3 | +2.4 |
| Under 18 years | 24.0%±0.2 pts | 24.1% | – |
| 65 years and over | 18.3%±0.5 pts | 17.0% | – |
| Hispanic or Latino (any race) | 12.4% | 13.6% | −0.1 pts |
| White alone, not Hispanic | 82.7%±1.7 pts | 78.6% | −2.1 pts |
| Black or African American alone, not Hispanic | 0.3%±0.2 pts | 0.7% | – |
| Asian alone, not Hispanic | 0.1%±0.1 pts | 1.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.5%±0.4 pts | 0.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 2.0%±0.4 pts | 4.2% | – |
| Some other race alone, not Hispanic | 1.8%±1.7 pts | 0.6% | – |
| Born outside the United States | 5.5%±1.2 pts | 5.9% | no clear change |
| Speak a language other than English at home (age 5+) | 9.1%±1.7 pts | 11.0% | – |
| Civilian veterans (age 18+) | 6.5%±1.5 pts | 8.0% | – |
| With a disability | 16.9%±2.1 pts | 14.1% | – |
| No health insurance coverage | 10.6%±2.5 pts | 9.1% | no clear change |
| High school graduate or higher (age 25+) | 90.8%±1.7 pts | 91.9% | – |
| Bachelor's degree or higher (age 25+) | 22.8%±2.8 pts | 31.8% | no clear change |
| Graduate or professional degree (age 25+) | 6.2%±1.5 pts | 10.5% | – |
| Moved from another state in the past year | 3.4%±1.2 pts | 4.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Fremont County earn?
Half of Fremont County's 4,654 households earn less than $72,683 a year (±$5,715), against $77,800 in Idaho. In 2015-2019 it was $71,460 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.1% of residents live below the poverty line.
| Measure | Fremont County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $72,683±$5,715 | $77,800 | no clear change |
| Mean household income | $93,018±$7,705 | $102,747 | – |
| Per capita income | $32,810±$2,734 | $38,952 | no clear change |
| People below the poverty line | 10.1%±2.7 pts | 10.6% | no clear change |
| Children under 18 below the poverty line | 14.1%±4.7 pts | 12.4% | no clear change |
| Households receiving SNAP | 8.8%±2.4 pts | 7.6% | – |
| Households with a broadband subscription | 93.3%±1.7 pts | 91.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Fremont County?
Owners occupy 82.6% of Fremont County's occupied homes and renters 17.4%. The median owner-occupied home is valued at $314,200 by its owner (±$22,058). The median renter pays $864 a month including utilities, and 30.8% of renters pay 35% or more of their income on rent.
| Measure | Fremont County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $314,200±$22,058 | $418,600 | +$105,105 |
| Median gross rent | $864±$129 | $1,238 | no clear change |
| Renters paying 35% or more of income on rent | 30.8%±11.2 pts | 36.9% | no clear change |
| Median monthly owner costs, with a mortgage | $1,423±$74 | $1,687 | – |
| Owner-occupied homes | 82.6%±3.2 pts | 72.1% | no clear change |
| Housing units | 8,810±35 | 795,014 | −173 |
| Homeowner vacancy rate | 0.5%±0.8 pts | 0.7% | – |
| Rental vacancy rate | 0.6%±1.3 pts | 3.9% | – |
| Single-family detached homes | 83.1%±2.3 pts | 73.8% | – |
| Mobile homes | 11.4%±2.1 pts | 6.9% | – |
| Built 2020 or later | 1.6%±0.8 pts | 3.9% | – |
| Built 1939 or earlier | 9.7%±1.8 pts | 7.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Fremont County building?
Builders took permits for 156 new housing units across Fremont County in 2025 (126 single-family), 11.0 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Fremont County get to work?
71.8% of Fremont County's workers drive alone and 11.7% work from home. The average trip to work takes 24.1 minutes. The unemployment rate in 2020-2024 averaged 3.9%.
| Measure | Fremont County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.2%±2.7 pts | 63.0% | – |
| Unemployment rate | 3.9%±1.5 pts | 3.7% | no clear change |
| Drove alone to work | 71.8%±3.5 pts | 72.7% | – |
| Carpooled | 12.3%±2.9 pts | 8.9% | – |
| Public transportation | 0.2%±0.3 pts | 0.5% | – |
| Walked | 2.7%±0.9 pts | 2.6% | – |
| Worked from home | 11.7%±2.7 pts | 13.3% | +5.3 pts |
| Mean travel time to work | 24.1 min±2.3 | 21.6 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Fremont County's census tracts?
Fremont County is divided into 4 census tracts. Among those with a reliable estimate, median household income runs from $67,525 (Tract 9702) to $91,500 (Tract 9701).
| Tract 970116043970100 | 1,156±199 | $91,500 |
|---|---|---|
| Tract 970216043970200 | 3,789±403 | $67,525 |
| Tract 9703.0116043970301 | 5,611±356 | $67,917 |
| Tract 9703.0216043970302 | 3,387±302 | $76,176 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Fremont County compare with Idaho's other counties?
| Measure | Rank |
|---|---|
| Population | 23rd of 44 |
| Growth 2020-2025 | 31st of 44 |
| Residents per square mile | 27th of 44 |
| Median household income | 13th of 44 |
| Median home value | 24th of 44 |
| Median gross rent | 30th of 44 |
| Poverty rate | 32nd of 43 |
| Bachelor's degree or higher | 22nd of 44 |
| Median age | 21st of 44 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Fremont County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.