Welcome to Johnson County, Illinois! Nestled in the southern portion of the state, this region is affectionately known as “Little Egypt”. Johnson County is a place where history, nature, and community come together in a delightful blend.

Founded in 1812, Johnson County was named after Richard Mentor Johnson, a U.S. Congressman from Kentucky at the time. The county has a rich history that is woven into the fabric of its communities. The county seat is Vienna, a charming city that embodies the spirit of the county.

Johnson County spans a total area of 349 square miles, of which 344 square miles is land and 4.9 square miles is water. The county is home to a population of 13,308 according to the 2020 census. Despite its small size, the county is bustling with life and activities.

The climate in Johnson County is diverse, with average temperatures ranging from a low of 25 °F in January to a high of 90 °F in July. This allows for a variety of outdoor activities throughout the year. The county is also conveniently connected with major highways including Interstate 24, Interstate 57, U.S. Route 45, and several Illinois Routes.

Whether you’re visiting or considering making Johnson County your home, you’ll find a welcoming community, rich history, and beautiful landscapes. Welcome to Johnson County, Illinois – we can’t wait to meet you!