| ZIP Codes: | 4 ZIP Codes (2 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 307 / 605 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:14:25 PM |
| Population: | 8,545 [See All] |
| FIPS: | 56019 |
| Land Area: | 4,041 sq mi |
| Water Area: | 27 sq mi |
| Coordinates: | 44.0943, -106.6034 |
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8,545 residents live across 4 ZIPs covering 4,041 sq mi, served by 4 distinct USPS-recognized cities.
Population moved from 8,405 to 8,545 from 2014 to 2024 — a +1.7% change. 2 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 82640 (Linch, $250,001 median) and poorest ZIP 82834 (Buffalo, $63,395) are 49.5 miles apart — a 3.9× income gap across local geography.
Median home values vary 3.1× across this county — from $194,300 in 82639 (Kaycee) to $610,500 in 82640 (Linch).
Density varies 3632× across the county — from 0 people/sq mi in 82639 (Kaycee) to 1,434 in 82640 (Linch).
Educational attainment ranges from 1.7% bachelor's+ in 82640 (Linch) to 32.3% in 82834 (Buffalo) — the breadth of educational profiles across the area.
Within Wyoming, this is the #19 most populous of 28 counties and ranks #4 for median household income .
On the national stage, Johnson County is ranks #58 for income .
Weighted by population, the typical household earns about $68,014 across the county — reflecting what a typical resident sees, not a simple ZIP average.
30.9% of adults age 25+ hold a bachelor's degree or higher (1,946 of 6,307 reporting).
2 Standard delivery, 2 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.