ZIP codes in Delaware County
14 ZIPs touch Delaware County, Oklahoma. The blue dashed line is the county border; orange ZIPs reach into it.
14
ZIP codes
11
cross the county line
53,828
people in these ZIPs
77
counties in OK
Most people
Delaware County ZIP list
More counties in Oklahoma
- Coal County10
- Comanche County22
- Cotton County11
- Craig County10
- Creek County23
- Custer County13
- Dewey County12
- Ellis County7
- Garfield County24
- Garvin County13
- Grady County15
- Grant County10
Questions people actually ask
How many ZIP codes are in Delaware County, Oklahoma?
14 ZIP codes reach into Delaware County, including 1 PO Box or single-address ZIPs placed by the town they serve. 11 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Delaware County has the most people?
74344 (Grove) has about 14,876 residents, the most of any ZIP touching Delaware County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Delaware 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 Delaware 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