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City ZIP codes · Illinois

Oak Park, IL ZIP Codes

4 ZIP codes use the postal name Oak Park, Illinois (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 $99,167 in 60301 to $136,178 in 60304, 1.4 times as much (Census Bureau, ACS 2020-2024). Oak Park's most populous ZIP code is 60302, with 32,862 people (ACS 2020-2024); 100% of its land is in the city of Oak Park.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Oak Park's ZIP codes?

60301: $99k median household income60302: $101k median household income60304: $136k median household income60302603046030160301: $99k median household income60302: $101k median household income60304: $136k median household income60302603046030160301: $99k median household income60302: $101k median household income60304: $136k median household income603026030460301
The 3 residential ZIP codes named Oak Park, 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 Oak Park's ZIP codes?

The highest median household income is in 60304 ($136,178), the lowest in 60301 ($99,167). Home values run from $247,000 in 60301 to $474,200 in 60302.

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

All 3 residential ZIP codes of Oak Park

Residential ZIP codes with the postal name Oak Park, IL, largest first (ACS 2020-2024); sort by any column
County
60302 Cook County 32,862 11,121 $101k $474k
60304 Cook County 16,955 10,939 $136k $467k
60301 Cook County 3,475 17,821 $99k $247k

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 Oak Park

1 ZIP code named Oak Park 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.

Oak Park, IL: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
60303Cook County

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

Which counties do Oak Park's ZIP codes reach?

Oak Park's residential ZIP codes lie in Cook County.

Which first three digits do Oak Park'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 Oak Park starts with 603.

Three-digit prefixes of Oak Park'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 Oak Park's
PrefixSectional centerHereAll codes
603 Carol Stream, IL (SCF 601) 4 6

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