City ZIP codes · Arizona
Douglas, AZ ZIP Codes
3 ZIP codes use the postal name Douglas, Arizona (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Douglas's most populous ZIP code is 85607, with 17,191 people (ACS 2020-2024); 1% of its land is in the city of Douglas.
- ACS2020-24
- Census2020
- GeoNames2026
Where are Douglas's ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All 2 residential ZIP codes of Douglas
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).
PO Box and single-organization ZIP codes in Douglas
1 ZIP code named Douglas has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.
| ZIP | County |
|---|---|
| 85655 | Cochise County |
Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.
Which counties do Douglas's ZIP codes reach?
Douglas's residential ZIP codes lie in Cochise County.
Which first three digits do Douglas'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 Douglas starts with 856.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 856 | Tucson, AZ (SCF 856) | 3 | 53 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.