Dover, DE ZIP Codes
Dover, Delaware has 6 ZIP codes: 4 for street addresses (, , and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Dover ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Dover ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
19903, 19905 and 19906 have no area on the Census map. Dashed line: Dover city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Dover ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 19901 | street delivery Dover |
| 19902 | street delivery; mail may be addressed to Dover Afb Dover Afb |
| 19903 | PO boxes at the Dover post office Dover |
| 19904 | street delivery Dover |
| 19905 | PO boxes at the Dover post office Dover |
| 19906 | street delivery Dover |
Why your mail may say Dover when you live outside it
Dover ZIP codes also cover Highland Acres, Cheswold and Camden, so a letter addressed to Dover can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Kent County property records show which city you are in.
Dover ZIP code questions
What is the main ZIP code for Dover?
19901, the ZIP code of the main Dover post office at 445 Bank Ln.
Which Dover ZIP codes are for PO boxes only?
19903 and 19905. Mail to them goes to boxes at the post office, not to street addresses.
What county is Dover in?
Kent County.
ZIP codes for towns near Dover
More towns near Dover: Bel Air South, Sicklerville, Winslow Township, Middle River, Essex, Deptford Township, Gloucester Township, Egg Harbor Township, Ridley Township.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections