| ZIP Codes: | 10 ZIP Codes (8 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 270 / 364 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:17 PM |
| Population: | 78,710 [See All] |
| FIPS: | 21047 |
| CBSA: | Clarksville, TN-KY |
| Land Area: | 685 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 36.8056, -87.4977 |
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78,710 residents live across 10 ZIPs covering 685 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 80,710 to 78,710 from 2014 to 2024 — a -2.5% change. 5 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 42232 (Gracey, $90,265 median) and poorest ZIP 42240 (Hopkinsville, $51,534) are 11.0 miles apart — a 1.8× income gap across local geography.
Median home values vary 2.3× across this county — from $118,000 in 42236 (Herndon) to $268,400 in 42223 (Fort Campbell).
Density varies 161× across the county — from 10 people/sq mi in 42236 (Herndon) to 1,678 in 42223 (Fort Campbell).
Educational attainment ranges from 11.4% bachelor's+ in 42262 (Oak Grove) to 30.0% in 42236 (Herndon) — the breadth of educational profiles across the area.
Within Kentucky, this is the #10 most populous of 120 counties and ranks #40 for median household income .
Weighted by population, the typical household earns about $55,968 across the county — reflecting what a typical resident sees, not a simple ZIP average.
20.3% of adults age 25+ hold a bachelor's degree or higher (8,909 of 43,855 reporting).
8 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 42240 | Hopkinsville | Standard | 41,415 | $51,534 | 280.7 | -6.5% |
| 42223 | Fort Campbell | Standard | 19,006 | $61,598 | 11.3 | -8.8% |
| 42262 | Oak Grove | Standard | 9,665 | $51,975 | 30.2 | 16.1% |
| 42217 | Crofton | Standard | 3,799 | $65,357 | 159.2 | 0.7% |
| 42266 | Pembroke | Standard | 2,956 | $71,250 | 74.4 | 38.8% |
| 42236 | Herndon | Standard | 931 | $68,819 | 89.6 | 63.0% |
| 42232 | Gracey | Standard | 711 | $90,265 | 23.1 | 39.7% |
| 42254 | La Fayette | Standard | 227 | $47,250 | 16.6 | -21.5% |
| 42241 | Hopkinsville | PO Box | — | — | 0.0 | — |
| 42221 | Fairview | PO Box | — | — | 0.0 | — |