ZIP codes

ZIP codes in York County, Maine

York County has 36 ZIP codes, all of them entirely inside it. 216,731 people live in them (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 36; With 1% or more of their land inside
Entirely inside: 36; 99% or more of their land
Shared with other counties: 0; None crosses the county line
Most populated ZIP: 04005; 24,772 people · Biddeford
Least populated ZIP: 03910; 15 people · Cape Neddick
Largest ZIP by land: 04002; 66 sq mi · Alfred

Map of the ZIP codes in York County

Entirely in the county (99% or more of its land)
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in York County

36 ZIP codes in York County, ME, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
03901	Berwick	8,175	100%	8,175
03902	Cape Neddick	2,665	100%	2,665
03903	South Eliot	7,146	100%	7,146
03904	Kittery	8,389	100%	8,389
03905	Kittery Point	2,084	100%	2,084
03906	North Berwick	5,368	100%	5,368
03907	—	1,379	100%	1,379
03908	South Berwick	7,431	100%	7,431
03909	Cape Neddick	10,943	100%	10,943
03910	Cape Neddick	15	100%	15
03911	York Harbor	363	100%	363
04001	—	2,721	100%	2,721
04002	Alfred	7,737	100%	7,737
04005	Biddeford	24,772	100%	24,772
04006	Biddeford	39	100%	39
04020	Cornish	1,803	100%	1,803
04027	—	6,629	100%	6,629
04030	—	2,731	100%	2,731
04042	—	4,872	100%	4,872
04043	Kennebunk	11,820	100%	11,820
04046	Kennebunkport	8,102	100%	8,102
04047	Kezar Falls	1,715	100%	1,715
04048	Lake Arrowhead	3,400	100%	3,400
04049	—	4,017	100%	4,017
04056	—	100	100%	100
04061	Lake Arrowhead	3,074	100%	3,074
04063	Old Orchard Beach	612	100%	612
04064	Old Orchard Beach	8,632	100%	8,632
04072	Saco	20,819	100%	20,819
04073	Sanford	17,414	100%	17,414
04076	—	2,976	100%	2,976
04083	Sanford	4,833	100%	4,833
04087	—	2,250	100%	2,250
04090	—	11,713	100%	11,713
04093	—	8,512	100%	8,512
04095	—	1,480	100%	1,480

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Cape Neddick (3), Biddeford (2), Lake Arrowhead (2), Old Orchard Beach (2), Sanford (2), and Alfred (1); 18 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 039 and 040.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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