ZIP Codes of Barren County, KY

Population & People
Population & People
Total Population
42,938
Household Income
Household Income
Median Income
$60,833
Housing
Housing
Total Housing Units
19,549
Business & Economy
Business & Economy
Total Businesses
844
Employment
Employment
Employment Rate
52.57%
Education
Education
Bachelor's Degree+
18.62%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 9 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:9 ZIP Codes (7 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:270 / 364
Timezone:Central (GMT -06:00)
Local Time:2:12:16 PM
Population:42,938 [See All]
FIPS:21009
CBSA:Glasgow, KY
Land Area:490 sq mi
Water Area:12 sq mi
Coordinates:36.9727, -85.9484
Quick Link:
https://www.zip-codes.com/county/ky-barren.asp
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Wide geographic spread
ZIPs range from 278.8 sq mi down to 2.69 — a 104× sprawl ratio.

Standout ZIPs in this County


Most Populous
Glasgow · 31,506 people
73.4% of county total
Highest Income
Lucas · $98,000 median
1.6× county average
Largest Land Area
Glasgow · 278.8 sq mi
Spans the most ground
Fastest Growth
Park City · 68.5% (10-yr)
1,675 → 2,822 residents
Most Educated
Glasgow · 20.4% bachelor's+
4,468 of 21,869 adults 25+

Things worth knowing about Barren County


42,938 residents live across 9 ZIPs covering 490 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 39,894 to 42,866 from 2014 to 2024 — a +7.4% change. 6 ZIPs gained residents, 0 lost.

The county's wealthiest ZIP 42156 (Lucas, $98,000 median) and poorest ZIP 42127 (Cave City, $42,893) are 20.3 miles apart — a 2.3× income gap across local geography.

Median home values vary 1.3× across this county — from $157,000 in 42160 (Park City) to $211,900 in 42156 (Lucas).

Density varies across the county — from 24 people/sq mi in 42156 (Lucas) to 113 in 42141 (Glasgow).

Educational attainment ranges from 12.1% bachelor's+ in 42127 (Cave City) to 20.4% in 42141 (Glasgow) — the breadth of educational profiles across the area.

Within Kentucky, this is the #26 most populous of 120 counties and ranks #54 for median household income with the #21 fastest decade growth .

Weighted by population, the typical household earns about $51,484 across the county — reflecting what a typical resident sees, not a simple ZIP average.

18.6% of adults age 25+ hold a bachelor's degree or higher (5,529 of 29,691 reporting).

7 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Barren 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.

Glasgow

All ZIP Codes in Barren County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
42141GlasgowStandard31,506$52,896278.83.2%
42127Cave CityStandard7,030$42,893100.911.0%
42160Park CityStandard2,822$49,36469.968.5%
42123AustinStandard1,149$61,01023.17.2%
42156LucasStandard235$98,0009.635.1%
42130Eighty EightStandard1242.70.8%
42131EtoileStandard725.4
42142GlasgowPO Box0.0
42152HisevillePO Box0.0

Adjacent & Nearby Counties