Putnam County
Sign in to savecounty in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Israel Putnam
- Seat
- Hennepin
- Largest village
- Granville
- Total
- 172 sq mi (450 km )
- Land
- 160 sq mi (410 km )
- Water
- 12 sq mi (31 km ) 7.0%
- Estimate 2025
- 5,619
- Density
- 35/sq mi (14/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional districts
- 14th , 16th
- Website
- www .co .putnam .il .us
via Wikipedia infobox
Article
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.
Geography