Elmore County, Idaho
Elmore County, Idaho, has 29,465 residents (July 2025 estimate). Its county seat is Mountain Home. It uses Mountain Time and covers 3,075 sq mi (7,964 km²) of land.
- Resident population, July 2025
- 29,465
- Land area
- 3,075 sq mi (7,964 km²)
- County seat or government
- Mountain Home
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $65,359 ± $4,259
- Median home value
- $316,500 ± $15,251
- Median rent, with utilities
- $1,243 ± $70
- Homes lived in by their owners
- 65.6% ± 2.9 points
- County type
- County
- Metro or micro area
- Mountain Home, ID micro areaCentral county
- Water area
- 26.4 sq mi (68.3 km²)
- State
- Idaho
- County code (FIPS)
- 16039
- Coordinates (central point)
- 43.394698, -115.471205
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Elmore County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Mountain TimeAmerica/Boise | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 8364722,952 people
- 8371621,402 people
- 836483,219 people
- 836231,521 people
- 836241,349 people
- 83627575 people
- 83633502 people
- 8333729 people
8 ZIP Code areas overlap Elmore County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Elmore County, largest first
- Mountain Home School District 19326,461 people
- Glenns Ferry Joint School District 1922,556 people
- Bruneau-Grand View Joint School District 3652,322 people
- Bliss Joint School District 234554 people
- Prairie Elementary School District 19171 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Mountain Home, Idaho (city)16,493 people
- Mountain Home AFB, Idaho (CDP)3,219 people
- Glenns Ferry, Idaho (city)1,438 people
- Hammett, Idaho (CDP)319 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Camas County, Idaho36 mi east
- Ada County, Idaho39 mi west
- Boise County, Idaho43 mi north
- Gooding County, Idaho44 mi southeast
- Owyhee County, Idaho67 mi southwest
- Blaine County, Idaho76 mi east
- Twin Falls County, Idaho83 mi southeast
- Custer County, Idaho86 mi northeast
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.