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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Kalispell, MT

Kalispell, MT Covers 3 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 59901StandardFlathead49,693406
ZIP Code 59903P.O. BoxFlathead0406
ZIP Code 59904P.O. BoxFlathead0406

Timezone(s):Mountain (GMT -07:00)
Population:19,927 (More Details)
Male Population:9,432
Female Population:10,495
Median Age:35
ZIP Codes:3
Area Codes:1
Total Area:5,256 square miles (county)
Land Area:5,088 square miles (county)
Water Area:169 square miles (county)

Kalispell, MT Demographic Information *

Total population19,927
Male population9,432
Female population10,495
Median age (years)34.5
White Population18,776
Black Population49
Indian Population257
Asian Population191
Hawaiian Population13
Hispanic Population568
Median age (Male)32.4
Median age (Female)37
Total households8,638
Family households (families)4,944
Average household size2.26
Average family size2.94
Total housing units9,379
* Demographic data is based on 2010 Census. 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],