Jefferson County is a county located in the southern part of the U.S. state of Illinois. According to the 2020 census, it has a population of 37,113....
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Florida Jefferson County, Georgia Jefferson County, Idaho Jefferson County, Illinois Jefferson County, Indiana Jefferson County, Iowa Jefferson County, Kansas...
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Mount Vernon is a city in and the county seat of Jefferson County, Illinois, United States. The population was 14,600 at the 2020 census. Mount Vernon...
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Woodlawn is a village in Jefferson County, Illinois, United States. The population was 698 at the 2010 census. It is part of the Mount Vernon Micropolitan...
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city in Clinton, Jefferson, Marion, and Washington counties in the U.S. state of Illinois with the largest portion in Marion County. The city is the largest...
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Belle Rive is a village in Jefferson County, Illinois, United States. The population was 361 at the 2010 census. It is part of the Mount Vernon Micropolitan...
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Nason is a city in Jefferson County, Illinois, United States. The population was 236 people as of the 2010 census, making it the least populous incorporated...
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Bluford is a village in Jefferson County, Illinois, in the United States. As of the 2010 census the village population was 688, down from 785 at the 2000...
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Ina is a village in Jefferson County, Illinois, United States. The population was 2,338 as of the 2010 census. It is part of the Mount Vernon Micropolitan...
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Dix is a village in Jefferson County, Illinois, United States. The population was 461 at the 2010 census. It is part of the Mount Vernon Micropolitan Statistical...
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