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City ZIP codes · Wisconsin

Waukesha, WI ZIP Codes

4 ZIP codes use the postal name Waukesha, Wisconsin (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 1 for PO boxes or a single organization. Median household income runs from $74,588 in 53186 to $117,008 in 53189, 1.6 times as much (Census Bureau, ACS 2020-2024). Waukesha's most populous ZIP code is 53188, with 34,892 people (ACS 2020-2024); 42% of its land is in the city of Waukesha.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Waukesha's ZIP codes?

53186: $75k median household income53188: $92k median household income53189: $117k median household income53189531885318653186: $75k median household income53188: $92k median household income53189: $117k median household income53189531885318653186: $75k median household income53188: $92k median household income53189: $117k median household income531895318853186
The 3 residential ZIP codes named Waukesha, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Waukesha's ZIP codes?

The highest median household income is in 53189 ($117,008), the lowest in 53186 ($74,588). Home values run from $301,100 in 53186 to $406,200 in 53189.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 3 residential ZIP codes of Waukesha

Residential ZIP codes with the postal name Waukesha, WI, largest first (ACS 2020-2024); sort by any column
County
53188 Waukesha County 34,892 1,301 $92k $349k
53186 Waukesha County 33,374 2,651 $75k $301k
53189 Waukesha County 26,855 561 $117k $406k

Download the 4 ZIP codes as CSV

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 Waukesha

1 ZIP code named Waukesha 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.

Waukesha, WI: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
53187Waukesha County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Waukesha's ZIP codes reach?

Waukesha's residential ZIP codes lie in Waukesha County.

Which places do Waukesha's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Waukesha's residential ZIP codes cover Waukesha itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Waukesha'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 Waukesha starts with 531.

Three-digit prefixes of Waukesha's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Waukesha's
PrefixSectional centerHereAll codes
531 Milwaukee, WI (SCF 530) 4 66

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.