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City ZIP codes · Arizona

Casa Grande, AZ ZIP Codes

4 ZIP codes use the postal name Casa Grande, Arizona (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 $68,443 in 85122 to $82,935 in 85194, 1.2 times as much (Census Bureau, ACS 2020-2024). Casa Grande's most populous ZIP code is 85122, with 61,624 people (ACS 2020-2024); 81% of its land is in the city of Casa Grande.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Casa Grande's ZIP codes?

85122: $68k median household income85193: $58k median household income85194: $83k median household income85193851948512285122: $68k median household income85193: $58k median household income85194: $83k median household income85193851948512285122: $68k median household income85193: $58k median household income85194: $83k median household income851938519485122
The 3 residential ZIP codes named Casa Grande, 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 Casa Grande's ZIP codes?

The highest median household income is in 85194 ($82,935), the lowest in 85122 ($68,443). Home values run from $167,000 in 85193 to $350,400 in 85194.

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

All 3 residential ZIP codes of Casa Grande

Residential ZIP codes with the postal name Casa Grande, AZ, largest first (ACS 2020-2024); sort by any column
County
85122 Pinal County 61,624 1,093 $68k $284k
85194 Pinal County 8,077 100 $83k $350k
85193 Pinal County 4,118 19 $58k $167k

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 Casa Grande

1 ZIP code named Casa Grande 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.

Casa Grande, AZ: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
85130Pinal County

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

Which counties do Casa Grande's ZIP codes reach?

Casa Grande's residential ZIP codes lie in Pinal County.

Which places do Casa Grande's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Casa Grande's residential ZIP codes cover Casa Grande itself and 5 other places, 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 Casa Grande'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 Casa Grande starts with 851.

Three-digit prefixes of Casa Grande'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 Casa Grande's
PrefixSectional centerHereAll codes
851 Phoenix, AZ (SCF 852) 4 31

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