[2] Clinton County officially came into existence on March 1, 1830, and was named in honor of DeWitt Clinton,[3] the sixth Governor of New York State and architect of the Erie Canal, which opened up the Upper Midwest to settlement.

The act forming the county was approved by the Indiana General Assembly on January 29, 1830, and created Clinton from the eastern parts of neighboring Tippecanoe County.

Lieutenant General James F. Record was born and raised in Clinton County; Gen Record was awarded 3x Distinguished Service Crosses for his gallantry during the Vietnam War.

They are responsible for setting salaries, the annual budget, and special spending.

The commissioners are charged with executing the acts legislated by the council, collecting revenue, and managing the day-to-day functions of the county government.

The judge on the court is elected to a term of four years and must be a member of the Indiana Bar Association.

Each of these elected officers serves a term of four years and oversees a different part of county government.

[10] As of the 2010 United States Census, there were 33,224 people, 12,105 households, and 8,754 families residing in the county.