ZIP Codes of Mclean County, KY

Population & People
Population & People
Total Population
9,417
Household Income
Household Income
Median Income
$80,560
Housing
Housing
Total Housing Units
4,351
Business & Economy
Business & Economy
Total Businesses
164
Employment
Employment
Employment Rate
51.48%
Education
Education
Bachelor's Degree+
16.38%
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 (5 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:270 / 364
Timezone:Central (GMT -06:00)
Local Time:2:12:21 PM
Population:9,417 [See All]
FIPS:21149
CBSA:Owensboro, KY
Land Area:271 sq mi
Water Area:4 sq mi
Coordinates:37.5109, -87.2414
Quick Link:
https://www.zip-codes.com/county/ky-mclean.asp
Need Mclean data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Notable income spread
Median income ranges $48,090 to $130,250 across ZIPs — a 2.7× gap.

Standout ZIPs in this County


Most Populous
Calhoun · 4,206 people
44.7% of county total
Highest Income
Rumsey · $130,250 median
1.6× county average
Largest Land Area
Calhoun · 126.6 sq mi
Spans the most ground
Fastest Growth
Livermore · 0.1% (10-yr)
1,954 → 1,955 residents
Most Educated
Livermore · 22.4% bachelor's+
292 of 1,306 adults 25+

Things worth knowing about Mclean County


9,417 residents live across 6 ZIPs covering 271 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 9,782 to 9,417 from 2014 to 2024 — a -3.7% change. 3 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 42371 (Rumsey, $130,250 median) and poorest ZIP 42372 (Sacramento, $48,090) are 6.1 miles apart — a 2.7× income gap across local geography.

Median home values vary 1.6× across this county — from $102,900 in 42372 (Sacramento) to $168,000 in 42350 (Island).

Density varies across the county — from 12 people/sq mi in 42371 (Rumsey) to 76 in 42352 (Livermore).

Educational attainment ranges from 7.6% bachelor's+ in 42372 (Sacramento) to 26.6% in 42371 (Rumsey) — the breadth of educational profiles across the area.

Within Kentucky, this is the #99 most populous of 120 counties and ranks #7 for median household income .

Weighted by population, the typical household earns about $69,828 across the county — reflecting what a typical resident sees, not a simple ZIP average.

16.4% of adults age 25+ hold a bachelor's degree or higher (1,085 of 6,625 reporting).

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

All ZIP Codes in Mclean County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
42327CalhounStandard4,206$66,836126.6-1.0%
42352LivermoreStandard1,955$53,75025.70.1%
42372SacramentoStandard1,389$48,09037.8-15.7%
42350IslandStandard1,342$103,87540.3-9.1%
42371RumseyStandard472$130,25040.63.5%
42322Beech GrovePO Box530.0

Adjacent & Nearby Counties