| ZIP Codes: | 8 ZIP Codes (6 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 270 / 364 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:38 PM |
| Population: | 19,358 [See All] |
| FIPS: | 21155 |
| Land Area: | 368 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 37.5791, -85.3039 |
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19,358 residents live across 8 ZIPs covering 368 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 20,168 to 19,358 from 2014 to 2024 — a -4.0% change. 2 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 40037 (Loretto, $70,000 median) and poorest ZIP 40328 (Gravel Switch, $44,770) are 21.0 miles apart — a 1.6× income gap across local geography.
Median home values vary 3.2× across this county — from $66,800 in 40009 (Bradfordsville) to $215,000 in 40037 (Loretto).
Density varies 20× across the county — from 16 people/sq mi in 40328 (Gravel Switch) to 335 in 40049 (Nerinx).
Educational attainment ranges from 2.6% bachelor's+ in 40328 (Gravel Switch) to 54.6% in 40049 (Nerinx) — the breadth of educational profiles across the area.
Within Kentucky, this is the #58 most populous of 120 counties and ranks #69 for median household income .
Weighted by population, the typical household earns about $58,630 across the county — reflecting what a typical resident sees, not a simple ZIP average.
13.7% of adults age 25+ hold a bachelor's degree or higher (1,835 of 13,351 reporting).
6 Standard delivery, 2 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 |
|---|---|---|---|---|---|---|
| 40033 | Lebanon | Standard | 11,923 | $57,647 | 143.5 | -5.2% |
| 40037 | Loretto | Standard | 2,793 | $70,000 | 52.0 | 1.7% |
| 40009 | Bradfordsville | Standard | 1,851 | $63,889 | 65.6 | 19.7% |
| 40060 | Raywick | Standard | 1,114 | $45,313 | 41.9 | -5.1% |
| 40328 | Gravel Switch | Standard | 963 | $44,770 | 58.4 | -0.2% |
| 40063 | Saint Mary | PO Box | 326 | — | 0.0 | -50.8% |
| 40062 | Saint Francis | Standard | 280 | $52,941 | 5.8 | -27.3% |
| 40049 | Nerinx | PO Box | 108 | — | 0.3 | -0.9% |