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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Quincy, WA

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Counties:GRANT, WA
Area Code(s):509
Timezone(s):Pacific (GMT -08:00)
City Population:6,750 (More Details)
CBSA:Moses Lake, WA
Congressional District(s):04
Land Area:2,679 square miles (county)
Water Area:112 square miles (county)

1 ZIP Code

Quincy, WA ZIP Code Boundaries

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Quincy, WA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
98848Standard11,518100.00%GEORGE, TRINIDAD, WINCHESTER

Quincy, WA Demographic Information *

Total population**6,750
Male population3,420
Female population3,330
Median age (years)26.2
White Population3,707
Black Population26
Indian Population58
Asian Population46
Hawaiian Population12
Hispanic Population5,018
Median age (Male)25.6
Median age (Female)26.8
Total households1,915
Family households (families)1,541
Average household size3.51
Average family size3.87
Total housing units2,020
* Demographic data is based on 2010 Census for the City of QUINCY.
** 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],