| ZIP Codes: | 7 ZIP Codes (4 Standard, 2 PO Box, 1 Unique) [See All] |
| Area Code: | 502 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:17 PM |
| Population: | 69,831 [See All] |
| FIPS: | 21029 |
| CBSA: | Louisville/Jefferson County, KY-IN |
| Land Area: | 257 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 37.9895, -85.6713 |
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69,831 residents live across 7 ZIPs covering 257 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 59,721 to 69,831 from 2014 to 2024 — a +16.9% change. 4 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 40047 (Mount Washington, $99,124 median) and poorest ZIP 40110 (Clermont, $46,756) are 9.5 miles apart — a 2.1× income gap across local geography.
Median home values vary 1.6× across this county — from $172,200 in 40110 (Clermont) to $279,400 in 40047 (Mount Washington).
Density varies 14× across the county — from 58 people/sq mi in 40150 (Lebanon Junction) to 812 in 40047 (Mount Washington).
Educational attainment ranges from 9.6% bachelor's+ in 40110 (Clermont) to 26.2% in 40047 (Mount Washington) — the breadth of educational profiles across the area.
Within Kentucky, this is the #11 most populous of 120 counties and ranks #19 for median household income with the #4 fastest decade growth .
Hosts 1 single-entity Unique ZIP: 40166Shepherdsville .
Weighted by population, the typical household earns about $84,837 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 (10,066 of 49,478 reporting).
4 Standard delivery, 2 PO Box only, 1 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 40165 | Shepherdsville | Standard | 38,403 | $79,540 | 128.6 | 14.2% |
| 40047 | Mount Washington | Standard | 23,662 | $99,124 | 29.2 | 19.4% |
| 40150 | Lebanon Junction | Standard | 4,950 | $65,500 | 85.7 | 28.9% |
| 40109 | Brooks | Standard | 2,376 | $75,495 | 13.1 | -2.0% |
| 40110 | Clermont | PO Box | 440 | $46,756 | 0.0 | 3566.7% |
| 40166 | Shepherdsville | Unique | — | — | 0.0 | — |
| 40129 | Hillview | PO Box | — | — | 0.0 | — |