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County ZIP codes · Kentucky · FIPS 21161

Mason County, KY ZIP Codes

Mason County, Kentucky has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 5 residential and 2 for PO boxes or a single organization. 4 of the residential ones lie mainly in Mason County and 1 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $47,141 in 41056 (Maysville) to $59,250 in 41039 (Ewing) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Mason County?

41034 · Dover: $72k41039 · Ewing: $59k41044 · Germantown: $54k41055 · Mayslick: $65k41056 · Maysville: $47k410564103941055410444103441034 · Dover: $72k41039 · Ewing: $59k41044 · Germantown: $54k41055 · Mayslick: $65k41056 · Maysville: $47k410564103941055410444103441034 · Dover: $72k41039 · Ewing: $59k41044 · Germantown: $54k41055 · Mayslick: $65k41056 · Maysville: $47k4105641039410554104441034
The residential ZIP codes of Mason County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 5 postal town names: Maysville, Ewing, Mayslick, Germantown, Dover.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 5 residential ZIP codes in Mason County

4 ZIP codes lie mainly in Mason County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Mason County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
41056 Maysville 13,445 96 $47k $165k 98%
41055 Mayslick 1,897 29 $65k $219k 89%
41044 Germantown 1,263 42 $54k $119k 39%
41034 Dover 1,254 41 $72k $89k 98%

Partly in Mason County

Residential ZIP codes mainly in another county that reach at least 1% into Mason County, by their share here
In this county
41039 Ewing 2,974 38 $59k $119k 2%

Download the 7 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

5 ZIP codes of Mason County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Mason County and in the neighboring counties
ZIPIn MasonElsewhere
4105698%Lewis County 1%
410392%Fleming County 85%; Nicholas County 11%; Robertson County 2%
4105589%Fleming County 7%; Robertson County 4%
4104439%Robertson County 31%; Bracken County 30%
4103498%Bracken County 2%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Mason County without a residential area (GeoNames postal codes)
ZIPPostal name
41062Minerva
41096Washington

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Mason County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Mason County starts with 410.

Three-digit prefixes of Mason County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Mason County's
PrefixSectional centerHereAll codes
410 Cincinnati, OH (SCF 450) 7 68

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.