Franklin County, Idaho
Franklin County, Idaho, has 15,889 residents (July 2025 estimate). Its county seat is Preston. It uses Mountain Time and covers 663 sq mi (1,717 km²) of land.
- Resident population, July 2025
- 15,889
- Land area
- 663 sq mi (1,717 km²)
- County seat or government
- Preston
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $71,950 ± $10,437
- Median home value
- $372,600 ± $21,000
- Median rent, with utilities
- $894 ± $162
- Homes lived in by their owners
- 78.1% ± 4.1 points
- County type
- County
- Metro or micro area
- Logan, UT-ID metro areaOutlying county
- Water area
- 4.69 sq mi (12.2 km²)
- State
- Idaho
- County code (FIPS)
- 16041
- Coordinates (central point)
- 42.173609, -111.822965
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 Franklin 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
- 832639,940 people
- 832412,488 people
- 832861,668 people
- 832371,567 people
- 832281,134 people
- 83232562 people
- 83283185 people
7 ZIP Code areas overlap Franklin 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 Franklin County, largest first
- Preston Joint School District 20111,285 people
- West Side Joint School District 2023,394 people
- Grace Joint School District 1482,891 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.
- Preston, Idaho (city)5,928 people
- Franklin, Idaho (city)1,034 people
- Clifton, Idaho (city)788 people
- Weston, Idaho (city)569 people
- Dayton, Idaho (city)500 people
- Oxford, Idaho (city)49 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Bear Lake County, Idaho27 mi east
- Cache County, Utah31 mi south
- Oneida County, Idaho36 mi west
- Bannock County, Idaho41 mi northwest
- Caribou County, Idaho45 mi north
- Rich County, Utah48 mi southeast
Before using this answer on a form
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