Jefferson County (Illinois)

administration
Jefferson County Courthouse
US state :	Illinois
Administrative headquarters :	Mt. Vernon
Address of the administrative headquarters:	Jefferson County Courthouse 100 S. 10th Street Mt Vernon, IL 62864
Foundation :	March 26, 1819
Area code :	001 618
Demographics
Residents :	38,827 (2010)
Population density :	26.3 inhabitants / km ²
geography
Total area :	1512 km²
Water surface :	33 km²
map

The Jefferson County is a county in the US -amerikanischen State Illinois . In 2010 , the county had 38,827 residents and a population density of 26.3 people per square kilometer. The county seat is Mount Vernon .

geography

The county is located in southern Illinois. It has an area of 1512 km², of which 33 km² is water. To the south, the county has a share of Rand Lake , a reservoir of the Big Muddy River .

The following neighboring counties border Jefferson County:

	Marion County	Wayne County
Washington County
Perry County	Franklin County	Hamilton County

Rivers in the county

history

Jefferson

Population development
Census	Residents	± in%
1820	691	-
1830	2555	269.8%
1840	5762	125.5%
1850	8109	40.7%
1860	12,965	59.9%
1870	17,864	37.8%
1880	20,686	15.8%
1890	22,590	9.2%
1900	28,133	24.5%
1910	29,111	3.5%
1920	28,480	-2.2%
1930	31,034	9%
1940	34,375	10.8%
1950	35,892	4.4%
1960	32,315	-10%
1970	31,446	-2.7%
1980	36,552	16.2%
1990	37.020	1.3%
2000	40,045	8.2%
2010	38,827	-3%
Before 1900 1900–1990 2000 2010

Jefferson County was formed on March 26, 1819 from the western parts of Edwars and White Counties , a few months after Illinois became a state and included 16 different settlements. It was named after Thomas Jefferson , the third President of the United States.

The first seat of county government was Mount Pleasant, which was later renamed Mount Vernon. The first documented permanent settlement was in 1816 by Carter Wilkey, Daniel Crenshaw and Robert Cook.

On February 19, 1888, Mt. Vernon was almost completely destroyed by a tornado and killed 37 people. 450 buildings were totally destroyed.

Territorial development

Jefferson County from its inception in 1919 to 1821
1821 to 1823
1823 until today

Demographic data

According to the 2010 census , Jefferson County had 38,827 people in 15,314 households. The population density was 26.3 inhabitants per square kilometer. Statistically, 2.41 people lived in each of the 15,314 households.

The racial the population was composed of 88.7 percent white, 8.7 percent African American, 0.3 percent Native American, 0.7 percent Asian and other ethnic groups; 1.6 percent were descended from two or more races. Regardless of ethnicity, 2.2 percent of the population was Hispanic or Latino of any race.

22.1 percent of the population were under 18 years old, 61.7 percent were between 18 and 64 and 16.2 percent were 65 years or older. 48.5 percent of the population was female.

The median income for a household was 42,679 USD . The per capita income was $ 22,032. 17.2 percent of the population lived below the poverty line.

Jefferson County localities

Citys

Villages

Census-designated place (CDP)

Opdyke

Other Unincorporated Communities

^{1 - partially in Washington , Clinton and Marion Counties}

structure

Jefferson County is divided into 16 townships :

Township	Population (2010)	FIPS
Soon Hill Township	767	17-03428
Blissville Township	404	17-06496
Casner Township	1239	17-11670
Dodds Township	2647	17-20227
Elk Prairie Township	725	17-23334
Farrington Township	567	17-25648
Field Township	1468	17-25986
Grand Prairie Township	909	17-30731

Township	Population (2010)	FIPS
McClellan Township	1255	17-45512
Moores Prairie Township	347	17-50348
Mount Vernon Township	13,374	17-51193
Pendleton Township	1206	17-58564
Rome Township	1669	17-65377
Shiloh Township	6620	17-69511
Spring Garden Township	3307	17-72039
Webber Township	2323	17-79514