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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Poston, AZ

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Counties:LA PAZ, AZ
Area Code(s):928
Timezone(s):Mountain (GMT -07:00)
City Population:285 (More Details)
Congressional District(s):04
Land Area:4,500 square miles (county)
Water Area:14 square miles (county)

1 ZIP Code

Poston, AZ ZIP Code Boundaries

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Poston, AZ Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
85371P.O. Box419100.00%

Poston, AZ Demographic Information *

Total population**285
Male population151
Female population134
Median age (years)19.9
White Population16
Black Population2
Indian Population123
Asian Population0
Hawaiian Population0
Hispanic Population158
Median age (Male)19.2
Median age (Female)23
Total households81
Family households (families)63
Average household size3.51
Average family size3.79
Total housing units85
* Demographic data is based on 2010 Census for the City of POSTON.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],