ZIP codes in Dukes County
8 ZIPs touch Dukes County, Massachusetts. The blue dashed line is the county border; orange ZIPs reach into it.
8
ZIP codes
1
cross the county line
21,672
people in these ZIPs
14
counties in MA
Most people
Dukes County ZIP list
More counties in Massachusetts
- Barnstable County55
- Berkshire County41
- Bristol County44
- Essex County59
- Franklin County34
- Hampden County56
- Hampshire County31
- Middlesex County111
- Nantucket County3
Questions people actually ask
How many ZIP codes are in Dukes County, Massachusetts?
8 ZIP codes reach into Dukes County, including 1 PO Box or single-address ZIPs placed by the town they serve. 1 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Dukes County has the most people?
02568 (Vineyard Haven) has about 9,412 residents, the most of any ZIP touching Dukes County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Dukes 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 Dukes 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