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City ZIP codes · Arizona

San Tan Valley, AZ ZIP Codes

3 ZIP codes use the postal name San Tan Valley, Arizona (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Median household income runs from $93,707 in 85143 to $101,477 in 85140 (Census Bureau, ACS 2020-2024). San Tan Valley's most populous ZIP code is 85140, with 51,260 people (ACS 2020-2024); 31% of its land is in the city of San Tan Valley.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are San Tan Valley's ZIP codes?

85140: $102k median household income85143: $94k median household income851408514385140: $102k median household income85143: $94k median household income851408514385140: $102k median household income85143: $94k median household income8514085143
The 2 residential ZIP codes named San Tan Valley, 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 San Tan Valley's ZIP codes?

The highest median household income is in 85140 ($101,477), the lowest in 85143 ($93,707). Home values run from $389,200 in 85143 to $445,000 in 85140.

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

All 2 residential ZIP codes of San Tan Valley

Residential ZIP codes with the postal name San Tan Valley, AZ, largest first (ACS 2020-2024); sort by any column
County
85140 Pinal County 51,260 622 $102k $445k
85143 Pinal County 44,444 1,421 $94k $389k

Download the 3 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 San Tan Valley

1 ZIP code named San Tan Valley 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.

San Tan Valley, 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
85144Pinal County

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

Which counties do San Tan Valley's ZIP codes reach?

San Tan Valley's residential ZIP codes lie in Pinal County.

Which places do San Tan Valley's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, San Tan Valley's residential ZIP codes cover San Tan Valley itself and 2 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 San Tan Valley'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 San Tan Valley starts with 851.

Three-digit prefixes of San Tan Valley'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 San Tan Valley's
PrefixSectional centerHereAll codes
851 Phoenix, AZ (SCF 852) 3 31

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