Marion County, Illinois facts for kids

Kids Encyclopedia Facts - Homework Help
Marion County, Illinois
Map
Map of Illinois highlighting Marion County
Location in the state of Illinois
Map of the USA highlighting Illinois
Illinois's location in the U.S.
Statistics
Founded 1823
Seat Salem
Largest City Centralia
Area
 - Total
 - Land
 - Water

576 sq mi (1,492 km²)
572 sq mi (1,481 km²)
3.7 sq mi (10 km²), 0.6%
Population
 - (2010)
 - Density

39,437
69/sq mi (27/km²)
Time zone Central: UTC-6/-5
Named for: Francis Marion

Marion County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 39,437. Its county seat is Salem.

Marion County comprises the Centralia, IL Micropolitan Statistical Area, which is included in the St. Louis-St. Charles-Farmington, MO-IL Combined Statistical Area.

History

Marion County was organized on 24 January 1823 from portions of Jefferson and Fayette counties. It was named in honor of Revolutionary War Gen. Francis Marion, the "Swamp Fox".

Geography

According to the U.S. Census Bureau, the county has a total area of 576 square miles (1,490 km2), of which 572 square miles (1,480 km2) is land and 3.7 square miles (9.6 km2) (0.6%) is water.

The southwest corner of Marion County is the intersection of the Baseline with the Third Principal Meridian, the point of origin for the third survey of the Northwest Territory under the Land Ordinance of 1785. The origin is marked with a boulder south of Centralia just off U.S. 51.

Climate and weather

Weather chart for Salem, Illinois
J F M A M J J A S O N D
 
 
2.5
 
37
18
 
 
2.5
 
43
22
 
 
4
 
54
33
 
 
4
 
65
44
 
 
4.4
 
75
54
 
 
4.2
 
84
63
 
 
3.9
 
88
68
 
 
3.4
 
87
66
 
 
3.2
 
80
57
 
 
3.1
 
69
45
 
 
4.1
 
54
34
 
 
3.3
 
42
24
temperatures in °F
precipitation totals in inches
source: The Weather Channel

In recent years, average temperatures in the county seat of Salem have ranged from a low of 18 °F (−8 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −23 °F (−31 °C) was recorded in January 1994 and a record high of 105 °F (41 °C) was recorded in August 1983. Average monthly precipitation ranged from 2.46 inches (62 mm) in January to 4.37 inches (111 mm) in May.

Major highways

  • I-57.svg Interstate 57
  • US 50.svg U.S. Route 50
  • US 51.svg U.S. Route 51
  • Illinois 37.svg Illinois Route 37
  • Illinois 161.svg Illinois Route 161

Adjacent counties

Demographics

Historical population
Census Pop.
1830 2,125
1840 4,742 123.2%
1850 6,720 41.7%
1860 12,739 89.6%
1870 20,622 61.9%
1880 23,686 14.9%
1890 24,341 2.8%
1900 30,446 25.1%
1910 35,094 15.3%
1920 37,497 6.8%
1930 35,635 −5.0%
1940 47,989 34.7%
1950 41,700 −13.1%
1960 39,349 −5.6%
1970 38,986 −0.9%
1980 43,523 11.6%
1990 41,561 −4.5%
2000 41,691 0.3%
2010 39,437 −5.4%
Est. 2015 38,339 −2.8%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013

As of the 2010 United States Census, there were 39,437 people, 16,148 households, and 10,746 families residing in the county. The population density was 68.9 inhabitants per square mile (26.6/km2). There were 18,296 housing units at an average density of 32.0 per square mile (12.4/km2). The racial makeup of the county was 93.1% white, 3.9% black or African American, 0.6% Asian, 0.3% American Indian, 0.4% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population. In terms of ancestry, 27.5% were German, 15.8% were Irish, 13.6% were English, and 10.8% were American.

Of the 16,148 households, 30.9% had children under the age of 18 living with them, 48.9% were married couples living together, 12.8% had a female householder with no husband present, 33.5% were non-families, and 28.8% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.91. The median age was 41.4 years.

The median income for a household in the county was $38,974 and the median income for a family was $50,518. Males had a median income of $41,428 versus $28,042 for females. The per capita income for the county was $20,493. About 12.2% of families and 16.5% of the population were below the poverty line, including 23.9% of those under age 18 and 9.6% of those age 65 or over.

Communities

Cities

Villages

Census-designated places

  • Cartter
  • Fairman
  • Finney Heights
  • Glen Ridge
  • Helm
  • Slap Out
  • Suburban

Townships

Marion County is divided into seventeen townships:

  • Alma
  • Carrigan
  • Centralia
  • Foster
  • Haines
  • Iuka
  • Kinmundy
  • Meacham
  • Odin
  • Omega
  • Patoka
  • Raccoon
  • Romine
  • Salem
  • Sandoval
  • Stevenson
  • Tonti

Marion County, Illinois Facts for Kids. Homework Help - Kiddle Encyclopedia.