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Scott County, Illinois

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Scott County, Illinois
Scott County Courthouse, Winchester
Map of Illinois highlighting Scott County
Location within the U.S. state of Illinois
Coordinates: 39°39′N 90°29′W / 39.65°N 90.48°W / 39.65; -90.48
Country United States
State Illinois
Founded1839
Named afterScott County, Kentucky
SeatWinchester
Largest cityWinchester
Area
 • Total
253 sq mi (660 km2)
 • Land251 sq mi (650 km2)
 • Water1.9 sq mi (4.9 km2)  0.7%
Population
 (2020)
 • Total
4,949
 • Estimate 
(2024)
4,880 Decrease[1]
 • Density19.7/sq mi (7.61/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district15th
Websitescottcoil.gov

Scott County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 4,949,[2] making it the fourth-least populous county in Illinois. Its county seat is Winchester.[3]

Scott County is part of the Jacksonville, IL Micropolitan Statistical Area, which is also included in the Springfield-Jacksonville-Lincoln, IL Combined Statistical Area.

History

Scott County was formed in 1839 out of Morgan County. It was named for Scott County, Kentucky.

Geography

According to the U.S. Census Bureau, the county has a total area of 253 square miles (660 km2), of which 251 square miles (650 km2) is land and 1.9 square miles (4.9 km2) (0.7%) is water.[4] The county's western boundary is formed by the Illinois River.

Climate and weather

Winchester, Illinois
Climate chart (explanation)
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F
M
A
M
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A
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1.6
 
 
34
16
 
 
1.8
 
 
40
20
 
 
3.3
 
 
52
30
 
 
3.6
 
 
64
42
 
 
4.3
 
 
74
52
 
 
3.6
 
 
83
61
 
 
3.4
 
 
87
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2.8
 
 
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63
 
 
3
 
 
78
54
 
 
2.6
 
 
67
43
 
 
3.3
 
 
52
32
 
 
2.6
 
 
39
21
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[5]
Metric conversion
J
F
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A
M
J
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41
 
 
1
−9
 
 
44
 
 
4
−7
 
 
83
 
 
11
−1
 
 
90
 
 
18
6
 
 
110
 
 
23
11
 
 
90
 
 
28
16
 
 
86
 
 
31
18
 
 
72
 
 
29
17
 
 
75
 
 
26
12
 
 
67
 
 
19
6
 
 
83
 
 
11
0
 
 
65
 
 
4
−6
Average max. and min. temperatures in °C
Precipitation totals in mm

In recent years, average temperatures in the county seat of Winchester have ranged from a low of 16 °F (−9 °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 1912 and a record high of 113 °F (45 °C) was recorded in July 1934. Average monthly precipitation ranged from 1.60 inches (41 mm) in January to 4.34 inches (110 mm) in May.[5]

Major highways

Adjacent counties

Demographics

Historical population
CensusPop.Note
18406,215
18507,91427.3%
18609,06914.6%
187010,53016.1%
188010,7412.0%
189010,304−4.1%
190010,4551.5%
191010,067−3.7%
19209,489−5.7%
19308,539−10.0%
19408,176−4.3%
19507,245−11.4%
19606,377−12.0%
19706,096−4.4%
19806,1420.8%
19905,644−8.1%
20005,537−1.9%
20105,355−3.3%
20204,949−7.6%
2024 (est.)4,880[6]−1.4%
U.S. Decennial Census[7]
1790-1960[8] 1900-1990[9]
1990-2000[10] 2010[11]

2020 census

Scott County, Illinois – Racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
Race / Ethnicity (NH = Non-Hispanic) Pop 1980[12] Pop 1990[13] Pop 2000[14] Pop 2010[15] Pop 2020[16] % 1980 % 1990 % 2000 % 2010 % 2020
White alone (NH) 6,109 5,619 5,497 5,246 4,747 99.46% 99.56% 99.28% 97.96% 95.92%
Black or African American alone (NH) 0 1 2 5 5 0.00% 0.02% 0.04% 0.09% 0.10%
Native American or Alaska Native alone (NH) 3 6 8 9 1 0.05% 0.11% 0.14% 0.17% 0.02%
Asian alone (NH) 6 3 7 12 11 0.10% 0.05% 0.13% 0.22% 0.22%
Native Hawaiian or Pacific Islander alone (NH) x [17] x [18] 0 0 1 x x 0.00% 0.00% 0.02%
Other race alone (NH) 1 0 2 2 5 0.02% 0.00% 0.04% 0.04% 0.10%
Mixed race or Multiracial (NH) x [19] x [20] 11 38 131 x x 0.20% 0.71% 2.65%
Hispanic or Latino (any race) 23 15 10 43 48 0.37% 0.27% 0.18% 0.80% 0.97%
Total 6,142 5,644 5,537 5,355 4,949 100.00% 100.00% 100.00% 100.00% 100.00%

2010 census

As of the 2010 census, there were 5,355 people, 2,214 households, and 1,516 families living in the county.[21] The population density was 21.3 inhabitants per square mile (8.2/km2). There were 2,459 housing units at an average density of 9.8 per square mile (3.8/km2).[4] The racial makeup of the county was 98.6% white, 0.2% Asian, 0.2% American Indian, 0.2% black or African American, 0.1% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 0.8% of the population.[21] In terms of ancestry, 26.3% were German, 24.3% were American, 18.0% were English, and 16.2% were Irish.[22]

Of the 2,214 households, 32.0% had children under the age of 18 living with them, 54.7% were married couples living together, 9.1% had a female householder with no husband present, 31.5% were non-families, and 27.3% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.89. The median age was 42.7 years.[21]

The median income for a household in the county was $49,462 and the median income for a family was $64,412. Males had a median income of $40,781 versus $32,011 for females. The per capita income for the county was $27,530. About 6.5% of families and 9.1% of the population were below the poverty line, including 9.5% of those under age 18 and 10.2% of those age 65 or over.[23]

Communities

City

Town

Villages

Census-designated places

Unincorporated community

Population ranking

The population ranking of the following table is based on the 2020 census of Scott County.

county seat

Rank Place Municipal type Population (2020 Census)
1 Winchester City 1,574
2 Bluffs Village 618
3 Manchester Village 265
4 Alsey Village 195
5 Glasgow Village 119
6 Naples Town 100
7 Exeter Town 87

Politics

United States presidential election results for Scott County, Illinois[24]
Year Republican Democratic Third party(ies)
№  % №  % №  %
1892 1,006 39.73% 1,282 50.63% 244 9.64%
1896 1,261 43.63% 1,598 55.29% 31 1.07%
1900 1,204 42.59% 1,585 56.07% 38 1.34%
1904 1,163 45.47% 1,236 48.32% 159 6.22%
1908 1,101 42.76% 1,376 53.44% 98 3.81%
1912 379 15.41% 1,341 54.53% 739 30.05%
1916 2,126 45.72% 2,457 52.84% 67 1.44%
1920 2,075 52.25% 1,786 44.98% 110 2.77%
1924 2,227 50.49% 1,994 45.21% 190 4.31%
1928 2,601 59.96% 1,730 39.88% 7 0.16%
1932 1,740 36.22% 3,012 62.70% 52 1.08%
1936 2,165 42.14% 2,945 57.32% 28 0.54%
1940 2,585 50.70% 2,492 48.87% 22 0.43%
1944 2,185 53.84% 1,864 45.93% 9 0.22%
1948 1,840 51.28% 1,735 48.36% 13 0.36%
1952 2,298 60.36% 1,506 39.56% 3 0.08%
1956 2,303 60.91% 1,478 39.09% 0 0.00%
1960 2,267 59.44% 1,543 40.46% 4 0.10%
1964 1,627 45.46% 1,952 54.54% 0 0.00%
1968 1,971 55.55% 1,252 35.29% 325 9.16%
1972 2,228 66.00% 1,145 33.92% 3 0.09%
1976 1,789 55.35% 1,424 44.06% 19 0.59%
1980 1,990 65.42% 941 30.93% 111 3.65%
1984 1,976 67.33% 943 32.13% 16 0.55%
1988 1,535 55.02% 1,243 44.55% 12 0.43%
1992 1,132 40.68% 1,057 37.98% 594 21.34%
1996 1,112 43.81% 1,012 39.87% 414 16.31%
2000 1,458 59.05% 954 38.64% 57 2.31%
2004 1,696 64.34% 927 35.17% 13 0.49%
2008 1,455 55.81% 1,090 41.81% 62 2.38%
2012 1,587 61.80% 910 35.44% 71 2.76%
2016 1,966 75.38% 535 20.51% 107 4.10%
2020 2,114 77.07% 572 20.85% 57 2.08%
2024 2,071 79.90% 488 18.83% 33 1.27%

See also

References

  1. ^ "County Population Totals and Components of Change: 2020–2024". United States Census Bureau. U.S. Department of Commerce. March 2025. Retrieved August 31, 2025.
  2. ^ "Scott County, Illinois". United States Census Bureau. Retrieved June 10, 2023.
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. ^ a b "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
  5. ^ a b "Monthly Averages for Winchester, Illinois". The Weather Channel. Retrieved January 27, 2011.
  6. ^ "Population and Housing Unit Estimates Tables". United States Census Bureau. Retrieved July 24, 2025.
  7. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 8, 2014.
  8. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 8, 2014.
  9. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 8, 2014.
  10. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 8, 2014.
  11. ^ "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved July 8, 2014.
  12. ^ "1980 Census of Population - General Population Characteristics - Illinois- Table 14 - Persons by Race and Table 16 (p. 18-28) - Total Persons and Spanish Origin Persons by Type of Spanish Origin and Race (p. 29-39)" (PDF). United States Census Bureau.
  13. ^ "1990 Census of Population - General Population Characteristics - Illinois - Table 6 - Race and Hispanic Orogin" (PDF). United States Census Bureau.
  14. ^ "P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Scott County, Illinois". United States Census Bureau.
  15. ^ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Scott County, Illinois". United States Census Bureau.
  16. ^ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Scott County, Illinois". United States Census Bureau.
  17. ^ included in the Asian category in the 1980 Census
  18. ^ included in the Asian category in the 1990 Census
  19. ^ not an option in the 1980 Census
  20. ^ not an option in the 1990 Census
  21. ^ 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.
  22. ^ "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.
  23. ^ "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.
  24. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 1, 2018.

39°39′N 90°29′W / 39.65°N 90.48°W / 39.65; -90.48