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  2. Climate of Illinois - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Illinois

    Illinois averages around 50 days of thunderstorm activity a year which put it somewhat above average for number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes with an average of 54 occurring annually, which puts much of the state at around 9.7 tornadoes per 10,000 square miles (30,000 km 2) annually.

  3. National Register of Historic Places listings in Illinois

    en.wikipedia.org/wiki/National_Register_of...

    Lincoln Courthouse Square Historic District, Logan County East Dubuque School, Jo Daviess County Cave-In-Rock, Hardin County Illinois State Capitol, Sangamon County Dennis Otte Round Barn, Stephenson County Ronald Reagan Boyhood Home, Lee County Pere Marquette Hotel, Peoria County General Dean Suspension Bridge, Clinton County

  4. National Weather Service Lincoln, Illinois - Wikipedia

    en.wikipedia.org/wiki/National_Weather_Service...

    In June 1957 Hurricane Audrey's extratropical remnants caused a major rain, and flooding event across much of Central Illinois. [14] The Weather Bureau used many rain gauges across the region to measure the impacts of the storm. [14] The National Weather Service in Lincoln has covered many significant weather events in its history. [15]

  5. Stephenson County, Illinois - Wikipedia

    en.wikipedia.org/wiki/Stephenson_County,_Illinois

    Stephenson County is a county located in the U.S. state of Illinois. According to the 2020 United States Census, it had a population of 44,630. [1] Its county seat is Freeport. [2] Stephenson County is included in the Freeport, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.

  6. Morgan County, Illinois - Wikipedia

    en.wikipedia.org/wiki/Morgan_County,_Illinois

    Morgan County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 32,915. [1] Its county seat is Jacksonville. [2] Morgan County is part of the Jacksonville, IL Micropolitan Statistical Area, which is also included in the Springfield–Jacksonville–Lincoln, IL Combined Statistical Area.

  7. List of counties in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_Illinois

    Knox would later become a county in Indiana and is unrelated to the current Knox County in Illinois, while St. Clair would become the oldest county in Illinois. 15 counties had been created by the time Illinois achieved statehood in 1818. The last county, Ford County, was created in 1859.

  8. Grundy County, Illinois - Wikipedia

    en.wikipedia.org/wiki/Grundy_County,_Illinois

    Grundy County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 52,533. [1] Its county seat is Morris. [2] Grundy County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area. In 2010, the center of population of Illinois was in Grundy County, just northeast of the village ...

  9. Putnam County, Illinois - Wikipedia

    en.wikipedia.org/wiki/Putnam_County,_Illinois

    Putnam County is the least extensive county in the U.S. state of Illinois.According to the 2020 census, it had a population of 5,637. [1] The county seat is Hennepin. [2] The county was formed in 1825 out of Fulton County and named after Israel Putnam, [3] who was a general in the American Revolution.