Dewey Oklahoma ZIP Codes

Dewey holds a single ZIP code.

Every ZIP code in Dewey

The complete list of Dewey, Oklahoma ZIP codes with the county each falls in.
ZIP code	County
74029	Washington County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Dewey codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Dewey. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Dewey ZIP code begins 740. Those first three digits identify the sectional center facility that processes mail for this part of Oklahoma. Statewide that range covers 75 ZIP codes, so Dewey accounts for 1% of it.

Every Oklahoma ZIP prefix and the region it covers →

Area codes covering Dewey

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Dewey occupies.

Dewey Oklahoma area codes in full →

Where Dewey's ZIP codes sit

Each point is one Dewey ZIP code, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Cities near Dewey

The closest places to Dewey with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Bartlesville Oklahoma ZIP codes	3.7 mi	4 ZIP codes
Copan Oklahoma ZIP codes	7.6 mi	1 ZIP code
Wann Oklahoma ZIP codes	11 mi	1 ZIP code
Ochelata Oklahoma ZIP codes	13 mi	1 ZIP code
Delaware Oklahoma ZIP codes	16 mi	1 ZIP code
Lenapah Oklahoma ZIP codes	17 mi	1 ZIP code
Ramona Oklahoma ZIP codes	18 mi	1 ZIP code
Nowata Oklahoma ZIP codes	18 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.