| ZIP Codes: | 7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 270 / 364 / 502 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:39 PM |
| Population: | 20,430 [See All] |
| FIPS: | 21163 |
| CBSA: | Louisville/Jefferson County, KY-IN |
| Land Area: | 259 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 37.9762, -86.2363 |
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20,430 residents live across 7 ZIPs covering 259 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 19,600 to 20,430 from 2014 to 2024 — a +4.2% change. 2 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 40142 (Guston, $81,037 median) and poorest ZIP 40117 (Ekron, $58,696) are 5.6 miles apart — a 1.4× income gap across local geography.
Median home values vary 3.2× across this county — from $76,700 in 40155 (Muldraugh) to $245,000 in 40157 (Payneville).
Density varies 11× across the county — from 16 people/sq mi in 40104 (Battletown) to 188 in 40155 (Muldraugh).
Educational attainment ranges from 3.8% bachelor's+ in 40104 (Battletown) to 19.2% in 40108 (Brandenburg) — the breadth of educational profiles across the area.
Within Kentucky, this is the #54 most populous of 120 counties and ranks #28 for median household income .
Weighted by population, the typical household earns about $73,934 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.0% of adults age 25+ hold a bachelor's degree or higher (2,359 of 14,761 reporting).
7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
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 |
|---|---|---|---|---|---|---|
| 40108 | Brandenburg | Standard | 12,821 | $77,559 | 77.8 | 10.9% |
| 40142 | Guston | Standard | 2,253 | $81,037 | 45.1 | -16.3% |
| 40117 | Ekron | Standard | 2,050 | $58,696 | 21.2 | -1.5% |
| 40104 | Battletown | Standard | 1,143 | $71,111 | 70.0 | -9.8% |
| 40155 | Muldraugh | Standard | 1,127 | $60,508 | 6.0 | -3.9% |
| 40157 | Payneville | Standard | 854 | $58,750 | 32.0 | 33.9% |
| 40161 | Rhodelia | Standard | 182 | $74,348 | 7.0 | -1.1% |