| ZIP Codes: | 10 ZIP Codes (7 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 208 / 986 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 11:53:14 PM |
| Population: | 48,339 [See All] |
| FIPS: | 16011 |
| CBSA: | Blackfoot, ID |
| Land Area: | 2,201 sq mi |
| Water Area: | 25 sq mi |
| Coordinates: | 43.2220, -112.4594 |
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48,339 residents live across 10 ZIPs covering 2,201 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 44,033 to 48,339 from 2014 to 2024 — a +9.8% change. 4 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 83274 (Shelley, $92,669 median) and poorest ZIP 83262 (Pingree, $59,900) are 38.0 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.8× across this county — from $213,300 in 83210 (Aberdeen) to $379,300 in 83274 (Shelley).
Density varies 577× across the county — from 3 people/sq mi in 83236 (Firth) to 1,831 in 83218 (Basalt).
Educational attainment ranges from 12.1% bachelor's+ in 83210 (Aberdeen) to 23.2% in 83274 (Shelley) — the breadth of educational profiles across the area.
Within Idaho, this is the #8 most populous of 46 counties and ranks #25 for median household income with the #27 fastest decade growth .
Weighted by population, the typical household earns about $78,745 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.8% of adults age 25+ hold a bachelor's degree or higher (6,511 of 29,803 reporting).
7 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 83221 | Blackfoot | Standard | 29,081 | $75,172 | 899.0 | 6.4% |
| 83274 | Shelley | Standard | 11,699 | $92,669 | 94.3 | 23.5% |
| 83210 | Aberdeen | Standard | 3,843 | $74,615 | 337.4 | 21.0% |
| 83236 | Firth | Standard | 1,840 | $68,214 | 579.6 | -2.1% |
| 83262 | Pingree | Standard | 1,090 | $59,900 | 247.9 | -3.5% |
| 83218 | Basalt | PO Box | 569 | $78,472 | 0.3 | 67.8% |
| 83277 | Springfield | Standard | 164 | $63,654 | 9.5 | -51.5% |
| 83203 | Fort Hall | PO Box | 38 | — | 0.0 | -89.0% |
| 83215 | Atomic City | Standard | 15 | $41,250 | 32.7 | -31.8% |
| 83256 | Moreland | PO Box | — | — | 0.3 | — |