Population
14,208
2025
+5.9% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Fremont County had an estimated 14,208 residents in 2025, up 5.9% (788 more people) since 2020. That is slower than Idaho as a whole (+9.8%), and the 29th fastest growth of 43 counties in Idaho.
Data as of 2025 · updated
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14,208
2025
+5.9% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
−206
2025
−14.5 per 1,000 residents
+451 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
3.6%
2025
+0.9 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
156
2025
−13.3% since 2021
11.0 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
$72,683
2020–24
+27.9% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
2,147
2023
+23.8% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
Net domestic migration was negative in 2025: 206 more people moved out to other U.S. counties than moved in.
Private employers had 2,147 paid employees in mid-March 2023, +23.8% since 2018 (County Business Patterns).
Unemployment averaged 3.6% in 2025, 0.9 points higher than in 2019 (before the pandemic).
Builders were authorized to start 156 new homes in 2025, or 11.0 per 1,000 residents.
Median household income was $72,683 in the 2020–24 American Community Survey, +27.9% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 517th.
Part of the Rexburg, ID micro area.
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| Year | Population | Change |
|---|---|---|
| 2025 | 14,208 | −138 |
| 2024 | 14,346 | +113 |
| 2023 | 14,233 | +197 |
| 2022 | 14,036 | +451 |
| 2021 | 13,585 | +165 |
| 2020 | 13,420 | – |
Census Bureau population estimates, July 1 of each year.
Fremont County grew by 788 people since 2020; the largest part came from domestic migration (+451).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | +64 | +225 | |
| International migrationfrom and to other countries | +5 | +99 | |
| Domestic migrationfrom and to other U.S. counties | −206 | +451 | |
| Census adjustmentbalancing residual | −1 | +13 | |
| Total change | −138 | +788 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
| Measure | In Idaho | Among U.S. counties |
|---|---|---|
| Population growth | 29th of 43 | 517th of 3,107 |
| Net domestic migration per 1,000 residents | 42nd of 43 | 2,985th of 3,108 |
| Private-sector job growth | 8th of 43 | 141st of 3,092 |
| Median household income | 13th of 43 | 991st of 3,107 |
| Lowest unemployment rate | 17th of 43 | 1,018th of 3,108 |
| New homes permitted per 1,000 residents | 8th of 43 | 110th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
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Over 2020–25, Fremont County's population change (+5.9%) was ahead of 2 of its 7 neighbouring counties with a comparable figure and behind 5.
5 of its 8 neighbouring counties had a higher median household income than Fremont County's $72,683 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Fremont County, ID This county | 14,208 | +5.9% | −14.5 | 11.0 | $72,683 |
| Madison County, ID | 55,172 | +4.2% | −14.0 | 15.3 | $60,160 |
| Teton County, ID | 13,254 | +12.9% | 3.7 | 29.0 | $99,805 |
| Clark County, ID | 783 | – | – | – | $55,208 |
| Teton County, WY | 23,333 | −0.2% | −10.8 | 6.7 | $124,172 |
| Gallatin County, MT | 128,740 | +7.6% | 4.2 | 12.0 | $93,528 |
| Jefferson County, ID | 35,297 | +13.6% | 6.3 | 8.8 | $86,679 |
| Madison County, MT | 10,026 | +15.8% | 28.2 | 0.7 | $75,250 |
| Beaverhead County, MT | 10,043 | +7.1% | 8.1 | 4.2 | $61,268 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Yes. Its population grew 5.9% between 2020 and 2025, about 788 more people (Census Bureau population estimates). Idaho as a whole changed +9.8% over the same years. That ranks 29th of 43 counties in Idaho for population growth.
On net, none in 2025: about 206 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).
It averaged 3.6% in 2025 (BLS Local Area Unemployment Statistics, annual average).
About 14,208 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
Private employers there had 2,147 paid employees in mid-March 2023, +23.8% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Idaho county pages carry the public federal growth figures.
Email me when Fremont County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.