ZIP Codes of Casey County, KY

Population & People
Population & People
Total Population
13,712
Household Income
Household Income
Median Income
$51,424
Housing
Housing
Total Housing Units
6,292
Business & Economy
Business & Economy
Total Businesses
231
Employment
Employment
Employment Rate
44.05%
Education
Education
Bachelor's Degree+
11.99%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:606
Timezone:Eastern (GMT -05:00)
Local Time:2:12:17 PM
Population:13,712 [See All]
FIPS:21045
Land Area:342 sq mi
Water Area:1 sq mi
Coordinates:37.2547, -84.8681
Quick Link:
https://www.zip-codes.com/county/ky-casey.asp
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Kentucky's #78 most populous county
13,712 residents across 6 ZIPs — #78 of 120 Kentucky counties.

Standout ZIPs in this County


Most Populous
Liberty · 9,249 people
67.5% of county total
Highest Income
Windsor · $70,692 median
1.4× county average
Largest Land Area
Liberty · 220.1 sq mi
Spans the most ground
Fastest Growth
Dunnville · 32.3% (10-yr)
1,607 → 2,126 residents
Most Educated
Dunnville · 15.7% bachelor's+
203 of 1,294 adults 25+

Things worth knowing about Casey County


13,712 residents live across 6 ZIPs covering 342 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 13,987 to 13,712 from 2014 to 2024 — a -2.0% change. 3 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 42565 (Windsor, $70,692 median) and poorest ZIP 42539 (Liberty, $40,862) are 11.4 miles apart — a 1.7× income gap across local geography.

Median home values vary 1.3× across this county — from $127,800 in 42541 (Middleburg) to $172,000 in 42516 (Bethelridge).

Density varies across the county — from 32 people/sq mi in 42565 (Windsor) to 42 in 42539 (Liberty).

Educational attainment ranges from 3.9% bachelor's+ in 42566 (Yosemite) to 15.7% in 42528 (Dunnville) — the breadth of educational profiles across the area.

Within Kentucky, this is the #78 most populous of 120 counties and ranks #82 for median household income .

Weighted by population, the typical household earns about $44,909 across the county — reflecting what a typical resident sees, not a simple ZIP average.

12.0% of adults age 25+ hold a bachelor's degree or higher (1,155 of 9,633 reporting).

6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Casey County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Liberty

All ZIP Codes in Casey County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
42539LibertyStandard9,249$40,862220.1-6.9%
42528DunnvilleStandard2,126$50,22754.332.3%
42565WindsorStandard758$70,69223.923.7%
42566YosemiteStandard541$60,15614.65.7%
42516BethelridgeStandard540$43,37514.2-16.5%
42541MiddleburgStandard498$43,23215.3-25.8%

Adjacent & Nearby Counties