Shelby County, Illinois

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Shelby County
Shelby County Courthouse
Map of Illinois highlighting Shelby County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 39°23′N 88°49′W / 39.39°N 88.81°W / 39.39; -88.81
Country United States
State Illinois
Founded1827
Named forIsaac Shelby
SeatShelbyville
Largest cityShelbyville
Area
 • Total768 sq mi (1,990 km2)
 • Land759 sq mi (1,970 km2)
 • Water9.5 sq mi (25 km2)  1.2%
Population
 (2020)
 • Total20,990
 • Density27/sq mi (11/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district15th
Websitewww.shelbycounty-il.com

Shelby County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 20,990.[1] Its county seat is Shelbyville.[2]

History[edit]

Shelby County was formed in 1827 out of Fayette County. It was named in honor of Isaac Shelby, governor of Kentucky and participant in the American Revolutionary War.

Geography[edit]

According to the U.S. Census Bureau, the county has a total area of 768 square miles (1,990 km2), of which 759 square miles (1,970 km2) is land and 9.5 square miles (25 km2) (1.2%) is water.[4]

Climate and weather[edit]

Shelbyville, Illinois
Climate chart (explanation)
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F
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A
M
J
J
A
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1.9
 
 
41
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4.1
 
 
83
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68
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3.9
 
 
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39
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Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[5]

In recent years, average temperatures in the county seat of Shelbyville have ranged from a low of 19 °F (−7 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −26 °F (−32 °C) was recorded in January 1915 and a record high of 111 °F (44 °C) was recorded in July 1936. Average monthly precipitation ranged from 1.89 inches (48 mm) in February to 4.05 inches (103 mm) in June.[5]

Major highways[edit]

Adjacent counties[edit]

Demographics[edit]

Historical population
Census Pop.
18302,972
18406,659124.1%
18507,80717.2%
186014,61387.2%
187025,47674.3%
188030,27018.8%
189031,1913.0%
190032,1263.0%
191031,693−1.3%
192029,601−6.6%
193025,471−14.0%
194026,2903.2%
195024,434−7.1%
196023,404−4.2%
197022,589−3.5%
198023,9235.9%
199022,261−6.9%
200022,8932.8%
201022,363−2.3%
202020,990−6.1%
U.S. Decennial Census[6]
1790-1960[7] 1900-1990[8]
1990-2000[9] 2010-2013[1]

As of the 2010 United States Census, there were 22,363  people, 9,216 households, and 6,376 families living in the county.[10] The population density was 29.5 inhabitants per square mile (11.4/km2). There were 10,396 housing units at an average density of 13.7 per square mile (5.3/km2).[4] The racial makeup of the county was 98.6% white, 0.3% Asian, 0.2% American Indian, 0.2% black or African American, 0.2% from other races, and 0.6% from two or more races. Those of Hispanic or Latino origin made up 0.8% of the population.[10] In terms of ancestry, 25.5% were German, 9.9% were English, 9.8% were American, and 8.8% were Irish.[11]

Of the 9,216  households, 29.2% had children under the age of 18 living with them, 57.1% were married couples living together, 8.0% had a female householder with no husband present, 30.8% were non-families, and 27.1% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.90. The median age was 43.5 years.[10]

The median income for a household in the county was $44,627 and the median income for a family was $55,655. Males had a median income of $40,119 versus $27,860 for females. The per capita income for the county was $21,891. About 7.8% of families and 11.3% of the population were below the poverty line, including 16.7% of those under age 18 and 8.1% of those age 65 or over.[12]

Communities[edit]

Cities[edit]

Town[edit]

Villages[edit]

Census-designated place[edit]

Other unincorporated communities[edit]

Townships[edit]

Shelby County is divided into these townships:

Politics[edit]

United States presidential election results for Shelby County, Illinois[13]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 9,426 77.80% 2,504 20.67% 185 1.53%
2016 8,229 74.48% 2,288 20.71% 532 4.81%
2012 6,843 65.55% 3,342 32.01% 254 2.43%
2008 6,396 58.67% 4,245 38.94% 261 2.39%
2004 6,753 63.85% 3,744 35.40% 80 0.76%
2000 5,851 57.57% 4,018 39.54% 294 2.89%
1996 4,215 43.06% 4,249 43.41% 1,324 13.53%
1992 3,631 32.49% 5,101 45.65% 2,443 21.86%
1988 5,370 53.28% 4,650 46.14% 58 0.58%
1984 6,372 59.38% 4,317 40.23% 41 0.38%
1980 6,441 59.12% 3,988 36.61% 465 4.27%
1976 5,234 45.54% 6,172 53.70% 87 0.76%
1972 7,217 62.08% 4,389 37.75% 20 0.17%
1968 5,487 49.27% 4,528 40.66% 1,122 10.07%
1964 4,281 37.66% 7,088 62.34% 0 0.00%
1960 6,872 54.53% 5,720 45.39% 11 0.09%
1956 7,075 56.94% 5,337 42.95% 13 0.10%
1952 7,189 57.65% 5,268 42.25% 12 0.10%
1948 5,282 47.89% 5,589 50.68% 158 1.43%
1944 6,201 50.65% 5,919 48.35% 123 1.00%
1940 7,250 47.71% 7,704 50.69% 243 1.60%
1936 5,795 40.81% 8,186 57.64% 220 1.55%
1932 4,657 35.91% 8,093 62.40% 219 1.69%
1928 7,214 62.58% 4,071 35.31% 243 2.11%
1924 5,605 48.13% 5,265 45.21% 776 6.66%
1920 6,351 53.93% 5,113 43.42% 312 2.65%
1916 5,911 42.61% 7,515 54.18% 445 3.21%
1912 1,431 20.77% 3,467 50.33% 1,991 28.90%
1908 3,312 42.30% 4,065 51.92% 453 5.79%
1904 3,220 46.53% 2,962 42.80% 738 10.66%
1900 3,365 41.38% 4,514 55.52% 252 3.10%
1896 3,071 38.75% 4,709 59.42% 145 1.83%
1892 2,304 32.45% 3,523 49.62% 1,273 17.93%


See also[edit]

References[edit]

  1. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved July 8, 2014.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ White, Jesse. Origin and Evolution of Illinois Counties. State of Illinois, March 2010. [1]
  4. ^ a b "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 12, 2020. Retrieved July 12, 2015.
  5. ^ a b "Monthly Averages for Shelbyville, Illinois". The Weather Channel. Retrieved January 27, 2011.
  6. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 8, 2014.
  7. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 8, 2014.
  8. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 8, 2014.
  9. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 8, 2014.
  10. ^ a b c "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
  11. ^ "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
  12. ^ "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
  13. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved November 12, 2018.

Coordinates: 39°23′N 88°49′W / 39.39°N 88.81°W / 39.39; -88.81