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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Ottawa, KS

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Area Code(s):785
Timezone(s):Central (GMT -06:00)
City Population:12,649 (More Details)
CBSA:Ottawa, KS
Congressional District(s):03
Land Area:572 square miles (county)
Water Area:5 square miles (county)

1 ZIP Code

Ottawa, KS ZIP Code Boundaries

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Ottawa, KS Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Ottawa, KS Demographic Information *

Total population**12,649
Male population6,130
Female population6,519
Median age (years)33.2
White Population11,510
Black Population274
Indian Population120
Asian Population49
Hawaiian Population1
Hispanic Population634
Median age (Male)31.8
Median age (Female)34.7
Total households4,998
Family households (families)3,127
Average household size2.45
Average family size3.08
Total housing units5,518
* Demographic data is based on 2010 Census for the City of OTTAWA.
** 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],