Warm River, Idaho
Population, housing costs, incomes, jobs, commuting and climate in Warm River, compared with Idaho and the U.S. using Census records and their margins of error.
Warm River city · Incorporated city · Census GEOID 1685420 · Idaho directory
- Population · July 1, 2025
- 1 PEP Vintage 2025
- Change · 2024 to 2025
- +0.0% +0 residents
- Household income
- Unavailable ACS 2020–2024 · MOE unavailable
- Home value
- Unavailable ACS 2020–2024 · MOE unavailable
- Monthly gross rent
- Unavailable ACS 2020–2024 · MOE unavailable
- Median age
- Unavailable ACS 2020–2024 · MOE unavailable
Warm River is an incorporated city in Fremont County, Idaho, part of the Rexburg, ID micropolitan area. With 1 residents on July 1, 2025, it ranks 198th in Idaho and 19,477th nationally among Census places. Its population estimate was unchanged in the year to July 2025; it is essentially unchanged since April 2020.
What stands out in Warm River?
Compared with other Idaho places, Warm River is most distinctive for more spread-out settlement. Each statement below uses reliable estimates only, and survey differences from the state exceed their combined 90% margin of error.
- Residents per square mile of land: 2; lower than 99% of 197 Idaho places with reliable estimates. Only 0 of 197 Idaho places with reliable estimates are lower.
How Warm River compares with Idaho and the U.S.
| Measure | Warm River | Idaho | U.S. | Position in Idaho |
|---|---|---|---|---|
| Residents per square mile of land PEP 2025 / Gazetteer 2025 | 2 | — | — | lower than 99% of 197 Idaho places |
Positions compare Warm River with Idaho places in this directory whose estimate has a coefficient of variation of 30% or less (survey measures) or a published PEP value. The marker runs from the lowest value (left) to the highest (right); it is a description, not a score or a recommendation. With 1 residents, Warm River has a small ACS sample; prefer the population and geography records for precise comparisons.
How many people live in Warm River?
The latest official estimate is 1 residents on July 1, 2025. It ranks 19,477th by population nationally and 198th in Idaho among this directory’s PEP places. Population changed by 0 residents between the 2024 and 2025 estimates. These are annual estimates, not census enumerations.
| Reference date | Population | Change from previous estimate |
|---|---|---|
| July 1, 2020 | 1 | Separate from April 2020 base |
| July 1, 2021 | 1 | +0 |
| July 1, 2022 | 1 | +0 |
| July 1, 2023 | 1 | +0 |
| July 1, 2024 | 1 | +0 |
| July 1, 2025 | 1 | +0 |
From the revised April 2020 base to July 2025, the change is +0 residents (0.0%). This is a within-vintage comparison. Boundary adjustments can affect both the estimates and their interpretation.
Download this population chart (SVG) · Official population release
Where are the boundaries?
- Entity and stable identifier
- Warm River city, Idaho · Incorporated city · 1685420
- Counties or equivalents · 2025 boundaries
- Fremont County
- Metropolitan or micropolitan context · July 2023 delineations
- Rexburg, ID — Micropolitan Statistical Area County associations use Census PEP county place parts. Each county is matched by FIPS code to the official CBSA list; a city can span several counties or statistical areas. A missing association can reflect an area outside a CBSA or changed county codes between vintages. City figures on this page remain place-level statistics.
- Land area
- 0.7 square miles · 2025 Gazetteer
- Water area
- 0.0 square miles · 2025 Gazetteer
- Approximate population density
- 2 residents per square mile of land
- Internal point
- 44.120958°, -111.320995° · Census geographic reference point
Density divides the July 2025 estimate by 2025 Gazetteer land area, so it is approximate. The internal point is a locator, not an address. Census place profile reference .
Survey coverage for Warm River
The retained ACS population universe is zero. Percentage distributions and housing medians are not published as meaningful resident comparisons. The population history, official place identifier and Gazetteer geography above remain available.
How many jobs are located in Warm River?
Employers in Warm River reported 21 jobs in 2023, +23.5% compared with 2019 (17 jobs). That is 2100.0 jobs for every 100 residents in the July 2023 population estimate — more jobs than residents, so the place draws workers from surrounding areas. These are jobs at workplaces inside the city limits, wherever the workers live, unlike resident employment figures.
With fewer than 50 jobs, the industry, earnings and age breakdown is omitted: small LODES counts include confidentiality noise.
Source: Census LEHD Origin-Destination Employment Statistics (LODES) 8.4, workplace area characteristics, all jobs, second-quarter reference date. Census blocks are summed to 2024 place boundaries. Includes private, state and local government and federal civilian jobs; excludes self-employment, military and informal work. Counts include confidentiality noise and are less precise for small places.
Nearby station climate normals
No station in the retained NOAA release meets our complete standard-normal criteria within 25 km of this place’s Census internal point. We leave local climate values unavailable. Use NOAA’s station lookup to inspect other locations and their coverage.
Check a specific address before moving
City averages help compare places. A particular home’s school assignment, transit service and flood-map coverage need checks at the address.
- FEMA Flood Map Service Center — search the address, read the effective map and its date, and check any map changes. An unmapped location does not establish an absence of flood risk.
- NCES public school district directory — find district contact information, then use the district’s official address locator or enrollment office to confirm school assignment. A city name or district boundary alone does not assign a school.
- FCC National Broadband Map — check reported service at the exact location, then confirm availability and terms with the provider.
- Check the official transit operator’s route map and timetable for the address and your actual travel hours; the citywide commuting shares above do not measure service on a particular street.
Sources and data notes
Population: Census PEP Vintage 2025, published May 14, 2026. Survey measures: ACS 2020–2024 five-year estimates, published January 29, 2026, dollar figures in 2024 dollars. Geography: Census 2025 Gazetteer, with simplified 2024 state outlines for the locator. Statistical estimates and derived values use the same retained records in profiles, comparison, filters and downloads.
Climate uses NOAA 1991–2020 station normals (v1.0.1); jobs located in the city use LEHD LODES 8.4. Crime, school assignments and hazard scores are not inferred from these datasets, and missing values are never treated as zero. Inspect original sources, read calculation details, download this place’s source observations , or submit a correction.