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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Ottawa, OH

Ottawa, OH Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 45875StandardPutnam10,989419 / 567

Timezone(s):Eastern (GMT -05:00)
Counties:PUTNAM, OH
Population:4,460 (More Details)
Male Population:2,162
Female Population:2,298
Median Age:39
ZIP Codes:1
Area Codes:2
Total Area:484 square miles (county)
Land Area:483 square miles (county)
Water Area:2 square miles (county)

Ottawa, OH Demographic Information *

Total population4,460
Male population2,162
Female population2,298
Median age (years)38.8
White Population4,125
Black Population37
Indian Population17
Asian Population14
Hawaiian Population0
Hispanic Population461
Median age (Male)37.3
Median age (Female)40.3
Total households1,829
Family households (families)1,207
Average household size2.41
Average family size2.98
Total housing units1,983
* Demographic data is based on 2010 Census.

Ottawa, OH Other Information

  • Located in PUTNAM County, Ohio
  • Ottawa, OH is also known as:
    • GILBOA, OH

101 Cities within 30 miles of Ottawa, OH Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  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],