ZIP Codes of Butler County, KY

Population & People
Population & People
Total Population
10,213
Household Income
Household Income
Median Income
$56,349
Housing
Housing
Total Housing Units
4,444
Business & Economy
Business & Economy
Total Businesses
177
Employment
Employment
Employment Rate
49.53%
Education
Education
Bachelor's Degree+
10.32%
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 (3 Standard, 3 PO Box, 0 Unique) [See All]
Area Codes:270 / 364
Timezone:Central (GMT -06:00)
Local Time:2:12:17 PM
Population:10,213 [See All]
FIPS:21031
CBSA:Bowling Green, KY
Land Area:310 sq mi
Water Area:4 sq mi
Coordinates:37.2096, -86.6802
Quick Link:
https://www.zip-codes.com/county/ky-butler.asp
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Notable population decline
Lost 12.4% of residents since 2014.
Wide geographic spread
ZIPs range from 288.4 sq mi down to 2.88 — a 100× sprawl ratio.

Standout ZIPs in this County


Most Populous
Morgantown · 9,641 people
94.4% of county total
Highest Income
Rochester · $59,745 median
1.1× county average
Largest Land Area
Morgantown · 288.4 sq mi
Spans the most ground
Fastest Growth
Morgantown · -13.9% (10-yr)
11,202 → 9,641 residents
Most Educated
Morgantown · 10.2% bachelor's+
696 of 6,827 adults 25+

Things worth knowing about Butler County


10,213 residents live across 6 ZIPs covering 310 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 11,654 to 10,160 from 2014 to 2024 — a -12.8% change. 1 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 42273 (Rochester, $59,745 median) and poorest ZIP 42261 (Morgantown, $52,953) are 10.9 miles apart — a 1.1× income gap across local geography.

Density varies across the county — from 18 people/sq mi in 42252 (Jetson) to 33 in 42261 (Morgantown).

Educational attainment ranges from 10.2% bachelor's+ in 42261 (Morgantown) to 11.7% in 42273 (Rochester) — the breadth of educational profiles across the area.

Within Kentucky, this is the #95 most populous of 120 counties and ranks #68 for median household income .

Weighted by population, the typical household earns about $53,300 across the county — reflecting what a typical resident sees, not a simple ZIP average.

10.3% of adults age 25+ hold a bachelor's degree or higher (753 of 7,299 reporting).

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

Stories about Butler 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.

Morgantown

Population decline

Butler County lost 12.4% of residents between 2014 and 2024. ZIPs that shed the largest share:

Morgantown
-13.9%
11,202 → 9,641 residents

All ZIP Codes in Butler County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
42261MorgantownStandard9,641$52,953288.4-13.9%
42273RochesterStandard519$59,74518.914.8%
42252JetsonStandard532.9
42201AberdeenPO Box0.0
42288WoodburyPO Box0.0
42219DunbarPO Box0.0

Adjacent & Nearby Counties