Highway Department Relocation
Effective August 6, 2020 the Monroe County Highway Department has relocated to the County Annex Building, 901 Illinois Avenue, Suite B, Waterloo.
2019 TAX BILLS (payable in 2020)
The 2019 tax bills, payable in 2020, were mailed August 7, 2020. The first installment is due September 25 and the second installment is due November 6.
GIS has created some new user friendly maps/apps. Click link above to check them out.
Welcome to Monroe County, Illinois
The lush rolling hills and fertile farmland in Monroe County make it a wonderful location to raise a family. With a population of just under 34,000, it boasts numerous picturesque communities including the larger towns of Columbia, Waterloo (county seat), Valmeyer, Hecker, as well as other smaller quaint villages such as Maeystown and Fults.
Founded in 1816 and named for James Monroe, Monroe County is located in Southwest Illinois and is bordered on the west by the Mississippi river. Geographically the county is located just 11 miles to the south east of St. Louis Missouri.