Delaware County ZIP Codes

Delaware County is a county of New York.

ZIP codes: 34
Cities & towns: 34
Area codes: 3
Land area: 1,443 sq mi

Every ZIP code in Delaware County

121xx–138xx

The complete list of Delaware County, NY ZIP codes with the city each one delivers to.
ZIP code	City
12167	Stamford
12406	Arkville
12421	Denver
12430	Fleischmanns
12434	Grand Gorge
12438	Halcottsville
12455	Margaretville
12459	New Kingston
12474	Roxbury
13731	Andes
13739	Bloomville
13740	Bovina Center
13750	Davenport
13751	Davenport Center
13752	Delancey
13753	Delhi
13755	Downsville
13756	East Branch
13757	East Meredith
13774	Fishs Eddy
13775	Franklin
13782	Hamden
13783	Hancock
13786	Harpersfield
13788	Hobart
13804	Masonville
13806	Meridale
13838	Sidney
13839	Sidney Center
13842	South Kortright
13846	Treadwell
13847	Trout Creek
13856	Walton
13860	West Davenport

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Delaware County codes above are listed without a column we would have to invent.

Cities and towns in Delaware County

A further 25 places in Delaware County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Delaware County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Delaware County's ZIP codes sit

Each point is the reference point of one Delaware County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Scope every ZIP code recorded in Delaware County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.