Power County, Idaho
Power County, Idaho, has 8,246 residents (July 2025 estimate). Its county seat is American Falls. It uses Mountain Time and covers 1,404 sq mi (3,636 km²) of land.
- Resident population, July 2025
- 8,246
- Land area
- 1,404 sq mi (3,636 km²)
- County seat or government
- American Falls
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $61,146 ± $10,084
- Median home value
- $212,900 ± $33,672
- Median rent, with utilities
- $767 ± $64
- Homes lived in by their owners
- 73.7% ± 5.1 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Pocatello, ID metro area, Blackfoot, ID micro area, Burley, ID micro area, Brigham City, UT-ID micro area, and Hailey, ID micro area
- Water area
- 38.3 sq mi (99.2 km²)
- State
- Idaho
- County code (FIPS)
- 16077
- Coordinates (central point)
- 42.694126, -112.844407
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 Power 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
4 ZIP Code areas overlap Power 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
Power County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Power County, largest first
- American Falls Joint School District 3817,339 people
- Rockland School District 382415 people
- Arbon Elementary School District 383379 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.
Tribal areas in Power County, largest first
American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Pocatello, Idaho (city)57,635 people
- American Falls, Idaho (city)4,712 people
- Arbon Valley, Idaho (CDP)562 people
- Rockland, Idaho (city)228 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Bannock County, Idaho31 mi east
- Oneida County, Idaho39 mi southeast
- Bingham County, Idaho43 mi northeast
- Cassia County, Idaho49 mi southwest
- Blaine County, Idaho74 mi northwest
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