Jefferson County, Illinois

Jefferson County is located in Illinois. About 38,353 people live here. Between 2010 and 2020, the population declined from 38,827 to 37,113. The area covers about 1,512.0 square kilometers. The region is divided into 9 Municipalities. The region was founded in 1819. The name originates from Thomas Jefferson (Founding Father) Jefferson County is county in Illinois, United States. More information at jeffersoncounty.illinois.gov.

Named after	Thomas Jefferson
Year built	1819
Area	1512 km²
Located in	Illinois
Country	United States
Population	37113
Native name	Jefferson County

Jefferson County, Illinois

5th Street CN Bluford Subdivision East 10th Street East 11th Street East 12th Street East 13th Street East 5th Street East 6th Street

10th Street 11th Street 1st Street 2nd Street 3rd Street 4th Street 5th Street 6th Street

3rd Street County Road 1350 East Crosno Street East 1st Street East 2nd Street East 3rd Street East 4th Street East Lang Lane

Adams Street County Highway 39 Dix Village Hall Dollar General East Jefferson Street East Lincoln Street East Madison Street East North Street

1st Street 2nd Street 3rd Street 4th Street 5th Street 6th Street Big Muddy River Correctional Center Big Muddy River Correctional Center Heliport

17th Street 18th Street 23rd Street 27th Street 2nd Street 33rd Street 34th Street 4th Avenue

10th Street 5th Street 8th Street 9th Street County Highway 13 East Cooper Avenue East Cowling Avenue East Eaton Avenue

BNSF Beardstown Subdivision Broadway Avenue Cherry Street Circle Drive Cole Street Dodds Street East Elm Street East Knob Street

BNSF Beardstown Subdivision Cardinal Drive Casey Street Cemetery Street Central Street Dayton Drive Douglas Street East Flyers Drive

Jefferson County – Facts

Population38.353

Websitehttps://jeffersoncounty.illinois.gov/

Area1.512,0

County seatMount Vernon

Descriptioncounty in Illinois, United States

Population 201338.644

Population 201538.353

Population 202037.113

Subregions9

Data source: Wikidata

Public transit map Jefferson County Legend

	Railway
	Bus
	Tram

Bicycle map Jefferson County Legend

	Bike path
	Bike lane on roadway
	Cycling allowed on bus lane
	Bicycle street
	Open to cyclists
	Open to cyclists, good path
	Cycling prohibited
	Cobblestone

	Long-distance bike route	(depending on scale)
	Long-distance bike route	(depending on scale)

Pedestrian map Jefferson County Legend

Path

	Long-distance hiking trail	(depending on scale)
	Long-distance hiking trail	(depending on scale)
	Pedestrians prohibited

Jefferson County	Belle Rive
	Bluford
	Bonnie
	Dix
	Ina
	Mount Vernon
	Nason
	Waltonville
	Woodlawn