Jersey County, Illinois


Jersey County, Illinois
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
Named for U.S. state of New Jersey
Seat Jerseyville
Largest city Jerseyville
Area
 - Total
 - Land
 - Water

377.13 sq mi (977 km²)
369.27 sq mi (956 km²)
7.86 sq mi (20 km²), 2.08%
PopulationEst.
 - (2010)
 - Density

22,985
61.3/sq mi (23.7/km²)
Time zone Central: UTC-6/-5
Website www.jerseycounty-il.us

Jersey County is a county located in the U.S. state of Illinois. Jersey County is part of the St. Louis Metropolitan Area. According to the 2010 census, it has a population of 22,985, which is an increase of 6.1% from 21,668 in 2000.[1] The county seat is Jerseyville.[2]

Contents

Geography

 The Jersey County Courthouse in Jerseyville
The Jersey County Courthouse in Jerseyville

According to the 2010 census, the county has a total area of 377.13 square miles (976.8 km2), of which 369.27 square miles (956.4 km2) (or 97.92%) is land and 7.86 square miles (20.4 km2) (or 2.08%) is water.[3] Jersey County is bordered by three bodies of water: the Mississippi River to the south, the Illinois River to the west, and Macoupin Creek to the northwest.

Climate

Jerseyville, Illinois
Climate chart (explanation)
J F M A M J J A S O N D
 
 
1.9
 
35
17
 
 
2
 
41
22
 
 
3.5
 
53
32
 
 
4.1
 
64
42
 
 
4
 
74
52
 
 
3.7
 
83
61
 
 
3.5
 
88
66
 
 
2.9
 
86
63
 
 
3.2
 
79
55
 
 
2.9
 
68
43
 
 
3.8
 
53
34
 
 
2.8
 
40
23
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[4]

Typically, the county's climate reflects most Midwest areas, located in the transitional zone between the humid continental climate type and the humid subtropical climate type (Koppen Dfa and Cfa, respecively), with neither large mountains nor large bodies of water to moderate its temperature. Spring is the wettest season and produces severe weather ranging from tornadoes to snow or ice storms. Summers are hot and humid, and the humidity often makes the heat index rise to temperatures feeling well above 100 °F (38 °C). Fall is mild with lower humidity and can produce intermittent bouts of heavy rainfall with the first snow flurries usually forming in late November. Winters can be cold at times with periodic light snow and temperatures below freezing.

In recent years, average temperatures in Jerseyville have ranged from a low of 17 °F (−8 °C) in January to a high of 88 °F (31 °C) in July. The record low temperature of −25 °F (−32 °C) was recorded in January 1977 and the record high temperature of 112 °F (44 °C) was recorded in July 1954. Average monthly precipitation ranges from 1.92 inches (49 mm) in January to 4.14 inches (105 mm) in April.[4]

Adjacent counties

Major highways

State protected areas

National protected areas

  • Two Rivers National Wildlife Refuge (eastern portion)

History

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%
2010 22,985 6.1%
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 American Indians. The first European explorers to visit the area, Father Marquette and Louis Jolliet, arrived in 1673,[5] 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, and a monument to him is located at the park.

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 also 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.

Demographics

2000 census age pyramid for Jersey County.

As of the census[6] of 2000, there were 21,668 people, 8,096 households, and 5,861 families residing in the county. The population density was 59 people per square mile (23/km²). There were 8,918 housing units at an average density of 24 per square mile (9/km²). 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. 39.2% were of German, 14.5% American, 11.2% Irish and 11.1% English ancestry according to Census 2000. 98.3% spoke English and 1.1% Spanish as their first language.

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.

Education

Unified school districts

High Schools

Colleges and Universities

Municipalities

Incorporated communities in Jersey County

Cities

Villages

Towns

Townships

Jersey County is divided into eleven townships:

Townships by population

2008 estimates:[7]

Unincorporated Areas

  • East Newbern
  • Kemper
  • Lake Piasa
  • Lockhaven
  • McClusky
  • Rosedale
  • Spankey

See also

References

External links

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


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