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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Post Falls, ID

Post Falls, ID Covers 2 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 83854StandardKootenai37,245208
ZIP Code 83877P.O. BoxKootenai0208

Timezone(s):Pacific (GMT -08:00)
Population:27,574 (More Details)
Male Population:13,443
Female Population:14,131
Median Age:33
ZIP Codes:2
Area Codes:1
Total Area:1,316 square miles (county)
Land Area:1,244 square miles (county)
Water Area:71 square miles (county)

Post Falls, ID Demographic Information *

Total population27,574
Male population13,443
Female population14,131
Median age (years)33
White Population25,926
Black Population117
Indian Population260
Asian Population202
Hawaiian Population18
Hispanic Population1,280
Median age (Male)32.3
Median age (Female)33.8
Total households10,263
Family households (families)7,396
Average household size2.68
Average family size3.1
Total housing units11,150
* Demographic data is based on 2010 Census.

Post Falls, ID Other Information

  • Located in KOOTENAI County, Idaho
  • Post Falls, ID is also known as:
    • HAUSER, ID

42 Cities within 30 miles of Post Falls, ID Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  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],