| ZIP Codes: | 6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 208 / 986 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 11:53:14 PM |
| Population: | 15,056 [See All] |
| FIPS: | 16041 |
| CBSA: | Logan, UT-ID |
| Land Area: | 707 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 42.1717, -111.8658 |
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15,056 residents live across 6 ZIPs covering 707 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 12,853 to 15,056 from 2014 to 2024 — a +17.1% change. 6 ZIPs gained residents, 0 lost.
The county's wealthiest ZIP 83286 (Weston, $92,500 median) and poorest ZIP 83263 (Preston, $62,500) are 14.9 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.5× across this county — from $292,300 in 83228 (Clifton) to $438,900 in 83283 (Thatcher).
Density varies 16× across the county — from 4 people/sq mi in 83283 (Thatcher) to 62 in 83237 (Franklin).
Educational attainment ranges from 20.7% bachelor's+ in 83228 (Clifton) to 34.6% in 83283 (Thatcher) — the breadth of educational profiles across the area.
Within Idaho, this is the #21 most populous of 46 counties and ranks #7 for median household income with the #17 fastest decade growth .
Weighted by population, the typical household earns about $70,104 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.9% of adults age 25+ hold a bachelor's degree or higher (2,177 of 9,093 reporting).
6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
Franklin County grew 17.1% over the past decade — concentrated in 2 high-growth ZIPs:
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.