Putnam County, Illinois

Putnam County, Illinois
County	Putnam County
State	Illinois
Founded	1831
Seat	Hennepin
Largest town	Hennepin
Area total sq mi	172
Area land sq mi	160
Area water sq mi	12
Area percentage	7.0%
Population as of	2020
Population total	5,637
Population density sq mi	35.2
Time zone	Central
District	16th
Named for	Israel Putnam

Putnam County, Illinois. Located in the north-central part of the state, it is the smallest county in Illinois by population. The county seat and largest municipality is Hennepin, situated along the Illinois River. The area is known for its natural landscapes, including the Hennepin Canal Parkway State Park and the Sue and Wes Dixon Waterfowl Refuge.

History

The region was originally inhabited by the Illinois Confederation and later the Potawatomi people. European exploration began with French voyageurs like Louis Jolliet and Jacques Marquette in the 17th century. Following the Illinois Campaign of the American Revolutionary War, the area became part of the Northwest Territory. It was organized as a county in 1831, carved from Fulton County and named for Revolutionary War general Israel Putnam. Early development was tied to the Illinois and Michigan Canal, with Hennepin platted in 1835. The later construction of the Hennepin Canal in the early 20th century, connecting the Illinois River to the Rock River, was a significant engineering project. The county was also a site of activity during the Black Hawk War and later became a center for Illinois River trade.

Geography

According to the United States Census Bureau, the county has a total area of 172 square miles, of which 160 square miles is land and 12 square miles is water. The primary waterway is the Illinois River, which forms its western border. Major tributaries include the Senachwine Creek and Big Bureau Creek. The landscape features rolling plains, river bluffs, and significant wetlands like the Sue and Wes Dixon Waterfowl Refuge, part of the Emiquon Preserve. The Hennepin Canal Parkway State Park runs through the county, following the historic canal. It is bordered by Bureau County to the north, LaSalle County to the east, Marshall County to the south, and across the Illinois River by Henry County.

Demographics

As of the 2020 United States census, the population was 5,637, making it the least populous county in Illinois. The population density was about 35 people per square mile. The racial makeup was predominantly non-Hispanic white. The largest ancestry groups reported include German, Irish, and English. The county seat, Hennepin, is the only incorporated town; other communities include Granville, McNabb, and Mark. The median household income is below the state average, and a small percentage of the population lives below the Federal Poverty Level.

Government

The county operates under a commission form of government, with a three-member County Board. It is part of the 16th Congressional District, represented in the United States House of Representatives by Darren LaHood. At the state level, it lies within the 37th Senate District and the 76th House District. The county is served by the Putnam County Sheriff's Office and falls within the jurisdiction of the Tenth Judicial Circuit Court of Illinois. Other elected officials include the County Clerk, Treasurer, and States Attorney.

Economy

Historically, the economy was based on agriculture, coal mining, and Illinois River transportation via the Hennepin Canal. Today, agriculture remains a cornerstone, with major crops including corn and soybeans. Manufacturing and light industry are present, with companies like Matthews International operating facilities. Tourism related to outdoor recreation is growing, centered on the Hennepin Canal Parkway State Park, Sue and Wes Dixon Waterfowl Refuge, and Illinois River fishing and boating. The Emiquon Preserve, a collaborative project of The Nature Conservancy and the United States Fish and Wildlife Service, also attracts visitors for wildlife observation.

Education

Public education is provided by the Putnam County Community Unit School District 535, which operates Putnam County Elementary School and Putnam County Junior-Senior High School in Granville. The district is governed by an elected Board of Education. Some areas are served by neighboring districts, including Henry-Senachwine Community Unit School District 5. There are no institutions of higher education within the county; residents typically attend colleges in nearby areas such as Illinois Valley Community College in Oglesby or Bradley University in Peoria. The Putnam County Public Library District serves the community with branches in Hennepin and Granville.

Category:Illinois counties Category:Putnam County, Illinois Category:1831 establishments in Illinois