ZIP codes in Mason County
7 ZIPs touch Mason County, Kentucky. The blue dashed line is the county border; orange ZIPs reach into it.
7
ZIP codes
5
cross the county line
20,833
people in these ZIPs
120
counties in KY
Most people
Mason County ZIP list
More counties in Kentucky
- Lyon County4
- Madison County7
- Magoffin County4
- Marion County11
- Marshall County8
- Martin County9
- McCracken County8
- McCreary County8
- McLean County8
- Meade County12
- Menifee County5
- Mercer County5
Questions people actually ask
How many ZIP codes are in Mason County, Kentucky?
7 ZIP codes reach into Mason County, including 2 PO Box or single-address ZIPs placed by the town they serve. 5 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Mason County has the most people?
41056 (Maysville) has about 13,445 residents, the most of any ZIP touching Mason County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Mason County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Mason County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from