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Jersey County, Illinois
Map of Illinois highlighting Jersey County
Location in the state of Illinois
Map of the U.S. highlighting Illinois
Illinois's location in the U.S.
Founded February 28, 1839
Seat Jerseyville
Largest city Jerseyville
 - Total
 - Land
 - Water

377 sq mi (976 km²)
369 sq mi (956 km²)
8 sq mi (20 km²), 2.08%
 - (2006)
 - Density

22,628 (estimate)
59/sq mi (23/km²)
Time zone Central: UTC-6/-5

Jersey County is a county located in the U.S. state of Illinois. Jersey County is part of the St. Louis Metropolitan Area. As of 2000, the population was 21,668, and the population was 22,628 at the 2006 unofficial census. Its county seat is Jerseyville6.


According to the U.S. Census Bureau, the county has a total area of 976 km² (377 sq mi). 956 km² (369 sq mi) of it is land and 20 km² (8 sq mi) of it (or 2.08%) is water. Jersey County is bordered by the Mississippi River to the south, the Illinois River to the west, and Macoupin Creek to the northwest.

Adjacent Counties[]

Major highways[]


Historical populations
Census Pop.
1840 4,535
1850 7,354 62.2%
1860 12,051 63.9%
1870 15,054 24.9%
1880 15,542 3.2%
1890 14,810 −4.7%
1900 14,612 −1.3%
1910 13,954 −4.5%
1920 12,682 −9.1%
1930 12,556 −1.0%
1940 13,636 8.6%
1950 15,264 11.9%
1960 17,023 11.5%
1970 18,492 8.6%
1980 20,538 11.1%
1990 20,539 0%
2000 21,668 5.5%
Decennial US Census

Jersey County lies just northeast of where the great Mississippi and Illinois rivers meet. It is the former home of the Kickapoo, Menomini, Potawatomi, and Illiniwek Confederation Indians. The first European explorers to visit the area, Father Marquette and Louis Jolliet, arrived in 1673 [1], where they encountered the fearsome painting of the Piasa bird. The present day Pere Marquette State Park, located near Grafton, is named in Father Marquette's honor.

Jersey County was founded on February 28, 1839, and was formed out of Greene County. The county was named for the state of New Jersey, from which many of the early settlers emigrated - which was itself named for the Channel Island of Jersey in Great Britain. The area quickly evolved into several small agricultural communities. As the area soon began to flourish, a county government was established and a courthouse was built in Jerseyville, the county seat. The present courthouse is a magnificent architectural structure that was built in 1893.

Today, while the county maintains its agricultural base, it is within commuting distance of jobs and industry in St. Louis, Missouri and the surrounding area. A large portion of the population works outside of Jersey County and benefits from being "Near the crowd, but not in it.", the official slogan of the Jersey County Business Association's advertising campaign. The bordering rivers play an important part in Jersey County's economy by supporting agricultural producers and agribusiness, and by creating a strong tourist market. Education, manufacturing, and retail are among the county's largest industries.


2000 census age pyramid for Jersey County.

As of the census² of 2000, there were 21,668 people, 8,096 households, and 5,861 families residing in the county. The population density was 23/km² (59/sq mi). There were 8,918 housing units at an average density of 9/km² (24/sq mi). The racial makeup of the county was 98.13% White, 0.53% Black or African American, 0.20% Native American, 0.25% Asian, 0.03% Pacific Islander, 0.15% from other races, and 0.70% from two or more races. 0.75% of the population were Hispanic or Latino of any race.

There were 8,096 households, out of which 34.60% had children under the age of 18 living with them, 60.10% were married couples living together, 9.10% had a female householder with no husband present, and 27.60% were non-families. 23.90% of all households were made up of individuals and 11.80% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.05.

In the county, the population was spread out with 25.40% under the age of 18, 9.90% from 18 to 24, 27.60% from 25 to 44, 22.80% from 45 to 64, and 14.40% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 95.60 males. For every 100 females age 18 and over, there were 92.40 males.

The median income for a household in the county was $42,065, and the median income for a family was $49,666. Males had a median income of $38,771 versus $23,086 for females. The per capita income for the county was $19,581. About 5.30% of families and 7.10% of the population were below the poverty line, including 8.70% of those under age 18 and 5.70% of those age 65 or over.


Unified school districts[]

High Schools[]

Colleges and Universities[]

Cities and towns[]


Townships by population[]

2006 estimates: [2]

Unincorporated settlements[]

See also[]

Mississippi River State Fish and Wildlife Area


  1. ^ Jersey County description & history, retrieved August 24, 2007
  2. ^ Illinois Subcounty population estimates (2006), (XLS format) retrieved September 1, 2007

External links[]

Coordinates: 39°05′N 90°22′W / 39.09, -90.36

This page uses content from the English language Wikipedia. The original content was at Jersey County, Illinois. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.