Putnam County, Illinois
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About Putnam County
Putnam County is the least extensive county in the U.S. state of Illinois. According to the 2020 United States census, it had a population of 5,637. The county seat is Hennepin. The county was formed in 1825 out of Fulton County and named after Israel Putnam, who was a general in the American Revolution. Putnam County is part of the Ottawa, IL Micropolitan Statistical Area.
Description adapted from Wikipedia, CC BY-SA 4.0.
Putnam County at a glance
- County seat
- Hennepin
- Population
- 5,637 (2020)
- Land area
- 172 sq mi
- Founded
- 1825
Largest communities in Putnam County
- Granville Township2,777
- Granville1,359
- Hennepin Township1,223
- Magnolia Township1,021
- Hennepin County seat769
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Official channels
Putnam County election resources
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Part of Illinois Voter Check
This is the Putnam County page of Illinois Voter Check, a project of True the Vote, pointing Illinois voters at the official tools that already exist — and at Scan Check Protect to verify your registration.
Where anything here differs from what Putnam County or the Illinois State Board of Elections publishes, they are right and this page is not.