Monroe County, Illinois
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Monroe County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 34,962. Its county seat and largest city is Waterloo. Monroe County is included in
Monroe County Courthouse in Waterloo
J. B. Bridge during the flood of 1993
Southern Illinoismapsmall
Waterloo, Illinois
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Waterloo is a city in and county seat of Monroe County, Illinois, United States. The population was 11,013 at the 2020 census, up from 9,811 in 2010.
Monroe County, Illinois
…is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 34,962. Its county seat and largest city is Waterloo. Monroe County is included in the St. Louis, MO-IL Metropolitan Statistical Area. It is located in the southern portion of Illinois known historically…
Fountain Creek Bridge, west of the city limits
View over Porta Westfalica, Germany, Waterloo's sister city