ZIP codes

ZIP codes in Milwaukee County, Wisconsin

Milwaukee County has 36 ZIP codes. 35 lie entirely inside it and 1 are shared with neighboring counties, so part of their land and their people are elsewhere. About 926,260 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 36; 1 more just touches the border (under 1% of their land)
Entirely inside: 35; 99% or more of their land
Shared with other counties: 1; Most with Waukesha County (1)
Most populated ZIP: 53215; 58,146 people · Milwaukee
Least populated ZIP: 53295; 90 people · Milwaukee
Largest ZIP by land: 53132; 35 sq mi · Franklin

Map of the ZIP codes in Milwaukee County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
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 Milwaukee County

36 ZIP codes in Milwaukee County, WI, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
53110	Cudahy	17,853	100%	17,853
53129	Greendale	14,570	100%	14,570
53130	Hales Corners	7,712	100%	7,712
53132	Franklin	35,433	100%	35,433
53154	Oak Creek	37,325	100%	37,325
53172	South Milwaukee	20,442	100%	20,442
53202	Milwaukee	25,861	100%	25,861
53203	Milwaukee	2,357	100%	2,357
53204	Milwaukee	39,996	100%	39,996
53205	Milwaukee	9,265	100%	9,265
53206	Milwaukee	19,887	100%	19,887
53207	Milwaukee	34,313	100%	34,313
53208	Milwaukee	27,201	100%	27,201
53209	Milwaukee	45,170	100%	45,170
53210	Milwaukee	23,922	100%	23,922
53211	Milwaukee	34,234	100%	34,234
53212	Milwaukee	28,938	100%	28,938
53213	Wauwatosa	26,905	100%	26,905
53214	West Allis	34,480	100%	34,480
53215	Milwaukee	58,146	100%	58,146
53216	Milwaukee	30,345	100%	30,345
53217	River Hills	29,957	99.3%	≈ 29,844
53218	Milwaukee	41,196	100%	41,196
53219	Milwaukee	34,764	100%	34,764
53220	Greenfield	27,782	100%	27,782
53221	Milwaukee	38,044	100%	38,044
53222	Milwaukee	24,663	100%	24,663
53223	Milwaukee	28,793	100%	28,793
53224	Milwaukee	21,223	100%	21,223
53225	Milwaukee	25,187	99%	≈ 25,102
53226	Wauwatosa	18,908	100%	18,908
53227	West Allis	22,885	99.5%	≈ 22,831
53228	Greenfield	15,121	100%	15,121
53233	Milwaukee	14,497	100%	14,497
53235	St. Francis	9,004	100%	9,004
53295	Milwaukee	90	100%	90

They also touch the county with under 1% of their land, so they aren’t counted: 53126.

ZIP codes shared with other counties

These 1 ZIP codes have part of their land in another county. The first figure is the share of their land in Milwaukee County; then, where the rest lies.

53225 (Milwaukee): 99% here; 1.5% in Waukesha County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Milwaukee (22), Greenfield (2), Wauwatosa (2), West Allis (2), Cudahy (1), and Franklin (1); 12 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 531 and 532.

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.

Spotted a mistake? Let us know