ZIP Codes of Carlisle County, KY

Population & People
Population & People
Total Population
4,435
Household Income
Household Income
Median Income
$58,407
Housing
Housing
Total Housing Units
2,128
Business & Economy
Business & Economy
Total Businesses
81
Employment
Employment
Employment Rate
51.23%
Education
Education
Bachelor's Degree+
14.25%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (3 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:270 / 364
Timezone:Central (GMT -06:00)
Local Time:2:12:17 PM
Population:4,435 [See All]
FIPS:21039
CBSA:Paducah, KY-IL
Land Area:198 sq mi
Water Area:3 sq mi
Coordinates:36.8400, -88.9734
Quick Link:
https://www.zip-codes.com/county/ky-carlisle.asp
Need Carlisle data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Notable population decline
Lost 12.3% of residents since 2014.

Standout ZIPs in this County


Most Populous
Bardwell · 2,529 people
57.0% of county total
Highest Income
Bardwell · $63,229 median
1.1× county average
Largest Land Area
Bardwell · 99.1 sq mi
Spans the most ground
Fastest Growth
Bardwell · 3.3% (10-yr)
2,449 → 2,529 residents
Most Educated
Bardwell · 15.8% bachelor's+
277 of 1,755 adults 25+

Things worth knowing about Carlisle County


4,435 residents live across 4 ZIPs covering 198 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 5,057 to 4,435 from 2014 to 2024 — a -12.3% change. 1 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 42023 (Bardwell, $63,229 median) and poorest ZIP 42035 (Cunningham, $55,515) are 8.5 miles apart — a 1.1× income gap across local geography.

Median home values vary 1.2× across this county — from $94,800 in 42021 (Arlington) to $118,100 in 42023 (Bardwell).

Density varies across the county — from 15 people/sq mi in 42021 (Arlington) to 29 in 42035 (Cunningham).

Educational attainment ranges from 9.8% bachelor's+ in 42021 (Arlington) to 16.1% in 42035 (Cunningham) — the breadth of educational profiles across the area.

Within Kentucky, this is the #117 most populous of 120 counties and ranks #60 for median household income .

Weighted by population, the typical household earns about $60,150 across the county — reflecting what a typical resident sees, not a simple ZIP average.

14.3% of adults age 25+ hold a bachelor's degree or higher (437 of 3,066 reporting).

3 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Carlisle County


Population decline

Carlisle County lost 12.3% of residents between 2014 and 2024. ZIPs that shed the largest share:

Arlington
-37.9%
1,754 → 1,090 residents

All ZIP Codes in Carlisle County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
42023BardwellStandard2,529$63,22999.13.3%
42021ArlingtonStandard1,090$56,47771.3-37.9%
42035CunninghamStandard816$55,51528.0-4.4%
42070MilburnPO Box0.0

Adjacent & Nearby Counties