ZIP Codes of Mason County, KY

Population & People
Population & People
Total Population
16,596
Household Income
Household Income
Median Income
$61,215
Housing
Housing
Total Housing Units
8,164
Business & Economy
Business & Economy
Total Businesses
402
Employment
Employment
Employment Rate
52.91%
Education
Education
Bachelor's Degree+
19.93%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:5 ZIP Codes (3 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:606
Timezone:Eastern (GMT -05:00)
Local Time:11:53:38 PM
Population:16,596 [See All]
FIPS:21161
Land Area:236 sq mi
Water Area:1 sq mi
Coordinates:38.6323, -83.8537
Quick Link:
https://www.zip-codes.com/county/ky-mason.asp
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Kentucky's #68 most populous county
16,596 residents across 5 ZIPs — #68 of 120 Kentucky counties.

Standout ZIPs in this County


Most Populous
Maysville · 13,445 people
81.0% of county total
Highest Income
Dover · $71,538 median
1.2× county average
Largest Land Area
Maysville · 143.8 sq mi
Spans the most ground
Fastest Growth
Dover · 6.2% (10-yr)
1,181 → 1,254 residents
Most Educated
Mayslick · 23.4% bachelor's+
296 of 1,266 adults 25+

Things worth knowing about Mason County


16,596 residents live across 5 ZIPs covering 236 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 16,964 to 16,596 from 2014 to 2024 — a -2.2% change. 1 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 41034 (Dover, $71,538 median) and poorest ZIP 41056 (Maysville, $47,141) are 9.1 miles apart — a 1.5× income gap across local geography.

Median home values vary 2.4× across this county — from $89,400 in 41034 (Dover) to $218,500 in 41055 (Mayslick).

Density varies across the county — from 30 people/sq mi in 41055 (Mayslick) to 94 in 41056 (Maysville).

Educational attainment ranges from 19.1% bachelor's+ in 41056 (Maysville) to 24.6% in 41034 (Dover) — the breadth of educational profiles across the area.

Within Kentucky, this is the #68 most populous of 120 counties and ranks #53 for median household income .

Weighted by population, the typical household earns about $51,022 across the county — reflecting what a typical resident sees, not a simple ZIP average.

19.9% of adults age 25+ hold a bachelor's degree or higher (2,337 of 11,724 reporting).

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

Stories about Mason 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.

Maysville

All ZIP Codes in Mason County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
41056MaysvilleStandard13,445$47,141143.8-2.1%
41055MayslickStandard1,897$64,96763.3-7.3%
41034DoverStandard1,254$71,53829.16.2%
41096WashingtonPO Box0.0
41062MinervaPO Box0.0

Adjacent & Nearby Counties