| ZIP Codes: | 9 ZIP Codes (7 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 502 / 859 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:21 PM |
| Population: | 49,702 [See All] |
| FIPS: | 21179 |
| CBSA: | Louisville/Jefferson County, KY-IN |
| Land Area: | 498 sq mi |
| Water Area: | 8 sq mi |
| Coordinates: | 37.8132, -85.4460 |
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49,702 residents live across 9 ZIPs covering 498 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 45,972 to 49,702 from 2014 to 2024 — a +8.1% change. 8 ZIPs gained residents, 0 lost.
The county's wealthiest ZIP 40012 (Chaplin, $105,033 median) and poorest ZIP 40052 (New Hope, $45,750) are 29.6 miles apart — a 2.3× income gap across local geography.
Median home values vary 1.3× across this county — from $204,000 in 40107 (Boston) to $265,300 in 40013 (Coxs Creek).
Density varies 7× across the county — from 29 people/sq mi in 40052 (New Hope) to 208 in 40004 (Bardstown).
Educational attainment ranges from 13.7% bachelor's+ in 40107 (Boston) to 29.0% in 40013 (Coxs Creek) — the breadth of educational profiles across the area.
Within Kentucky, this is the #22 most populous of 120 counties and ranks #14 for median household income with the #20 fastest decade growth .
Weighted by population, the typical household earns about $72,477 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.8% of adults age 25+ hold a bachelor's degree or higher (8,228 of 34,619 reporting).
7 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 |
|---|---|---|---|---|---|---|
| 40004 | Bardstown | Standard | 30,601 | $66,578 | 147.3 | 4.7% |
| 40013 | Coxs Creek | Standard | 6,670 | $100,226 | 76.8 | 23.8% |
| 40051 | New Haven | Standard | 4,658 | $80,337 | 93.4 | 4.8% |
| 40008 | Bloomfield | Standard | 4,020 | $66,486 | 93.0 | 6.2% |
| 40107 | Boston | Standard | 2,187 | $60,398 | 54.9 | 7.6% |
| 40012 | Chaplin | Standard | 712 | $105,033 | 10.0 | 55.1% |
| 40052 | New Hope | Standard | 655 | $45,750 | 22.6 | 26.0% |
| 40020 | Fairfield | PO Box | 199 | $90,712 | 0.5 | 77.7% |
| 40048 | Nazareth | PO Box | — | — | 0.0 | — |