ZIP Codes of Boyle County, KY

Population & People
Population & People
Total Population
31,398
Household Income
Household Income
Median Income
$61,282
Housing
Housing
Total Housing Units
13,203
Business & Economy
Business & Economy
Total Businesses
777
Employment
Employment
Employment Rate
52.35%
Education
Education
Bachelor's Degree+
26.06%
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 (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:606 / 859
Timezone:Eastern (GMT -05:00)
Local Time:2:12:16 PM
Population:31,398 [See All]
FIPS:21021
CBSA:Danville, KY
Land Area:181 sq mi
Water Area:2 sq mi
Coordinates:37.6102, -84.8739
Quick Link:
https://www.zip-codes.com/county/ky-boyle.asp
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Kentucky's #33 most populous county
31,398 residents across 6 ZIPs — #33 of 120 Kentucky counties.

Standout ZIPs in this County


Most Populous
Danville · 25,950 people
82.6% of county total
Highest Income
Parksville · $66,932 median
1.1× county average
Largest Land Area
Danville · 109.3 sq mi
Spans the most ground
Fastest Growth
Danville · 4.8% (10-yr)
24,762 → 25,950 residents
Most Educated
Danville · 27.6% bachelor's+
4,790 of 17,356 adults 25+

Things worth knowing about Boyle County


31,398 residents live across 6 ZIPs covering 181 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 30,096 to 31,398 from 2014 to 2024 — a +4.3% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 40464 (Parksville, $66,932 median) and poorest ZIP 40440 (Junction City, $54,500) are 4.5 miles apart — a 1.2× income gap across local geography.

Median home values vary 1.6× across this county — from $134,700 in 40440 (Junction City) to $220,400 in 40422 (Danville).

Density varies across the county — from 30 people/sq mi in 40464 (Parksville) to 237 in 40422 (Danville).

Educational attainment ranges from 12.3% bachelor's+ in 40464 (Parksville) to 27.6% in 40422 (Danville) — the breadth of educational profiles across the area.

Within Kentucky, this is the #33 most populous of 120 counties and ranks #52 for median household income .

Weighted by population, the typical household earns about $59,734 across the county — reflecting what a typical resident sees, not a simple ZIP average.

26.1% of adults age 25+ hold a bachelor's degree or higher (5,533 of 21,233 reporting).

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

Stories about Boyle 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.

Danville

All ZIP Codes in Boyle County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
40422DanvilleStandard25,950$59,615109.34.8%
40440Junction CityStandard2,428$54,50013.24.7%
40468PerryvilleStandard2,084$64,08127.4-0.5%
40464ParksvilleStandard936$66,93231.21.6%
40423DanvillePO Box0.0
40452MitchellsburgPO Box0.0

Adjacent & Nearby Counties