Montgomery County
Montgomery County Courthouse, Hillsboro
Map of Illinois highlighting Montgomery 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°14′N 89°29′W / 39.23°N 89.48°W / 39.23; -89.48
Country United States
State Illinois
Founded1821
Named forRichard Montgomery
SeatHillsboro
Largest cityLitchfield
Area
 • Total710 sq mi (1,800 km2)
 • Land704 sq mi (1,820 km2)
 • Water6.0 sq mi (16 km2)  0.8%
Population
 (2010)
 • Total30,104
 • Estimate 
(2018)
28,601
 • Density42/sq mi (16/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district13th
Websitewww.montgomeryco.com

Montgomery County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 30,104.[1] Its county seat is Hillsboro.[2][3]

History

Montgomery County was formed in 1821 out of Bond and Madison counties. It was named in honor of Richard Montgomery, an American Revolutionary War general killed in 1775 while attempting to capture Quebec City, Canada.[4] Perrin's 1882 History of Montgomery County relates that the county was named in honor of Gen. Montgomery, but goes on to say that "others are dubious as to whence it received its name."

Geography

According to the U.S. Census Bureau, the county has a total area of 710 square miles (1,800 km2), of which 704 square miles (1,820 km2) is land and 6.0 square miles (16 km2) (0.8%) is water.[5]

Climate and weather

Hillsboro, Illinois
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
2.2
 
 
37
21
 
 
2
 
 
44
26
 
 
3.6
 
 
56
35
 
 
4.2
 
 
68
45
 
 
4.3
 
 
78
55
 
 
4.1
 
 
87
64
 
 
3.5
 
 
91
68
 
 
3.5
 
 
89
66
 
 
3.2
 
 
82
58
 
 
2.9
 
 
71
47
 
 
3.8
 
 
55
37
 
 
3
 
 
42
26
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[6]

In recent years, average temperatures in the county seat of Hillsboro have ranged from a low of 21 °F (−6 °C) in January to a high of 91 °F (33 °C) in July, although a record low of −22 °F (−30 °C) was recorded in February 1905 and a record high of 114 °F (46 °C) was recorded in July 1954. Average monthly precipitation ranged from 2.00 inches (51 mm) in February to 4.31 inches (109 mm) in May.[6]

Adjacent counties

Transportation

Major highways

Airports

Litchfield Municipal Airport is located in Montgomery County, two nautical miles (3.7 km) southwest of the central business district of Litchfield, Illinois.

Demographics

Historical population
Census Pop.
18302,953
18404,49052.0%
18506,27739.8%
186013,979122.7%
187025,31481.1%
188028,07810.9%
189030,0036.9%
190030,8362.8%
191035,31114.5%
192041,40317.3%
193035,278−14.8%
194034,499−2.2%
195032,460−5.9%
196031,244−3.7%
197030,260−3.1%
198031,6864.7%
199030,728−3.0%
200030,652−0.2%
201030,104−1.8%
2018 (est.)28,601[7]−5.0%
U.S. Decennial Census[8]
1790-1960[9] 1900-1990[10]
1990-2000[11] 2010-2013[1]

As of the 2010 United States Census, there were 30,104 people, 11,652 households, and 7,806 families living in the county.[12] The population density was 42.8 inhabitants per square mile (16.5/km2). There were 13,080 housing units at an average density of 18.6 per square mile (7.2/km2).[5] The racial makeup of the county was 95.1% white, 3.2% black or African American, 0.4% Asian, 0.2% American Indian, 0.5% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 1.5% of the population.[12] In terms of ancestry, 27.8% were German, 11.2% were Irish, 10.1% were English, and 9.8% were American.[13]

Of the 11,652 households, 29.8% had children under the age of 18 living with them, 51.7% were married couples living together, 10.2% had a female householder with no husband present, 33.0% were non-families, and 28.4% of all households were made up of individuals. The average household size was 2.38 and the average family size was 2.87. The median age was 41.9 years.[12]

The median income for a household in the county was $40,864 and the median income for a family was $56,945. Males had a median income of $40,749 versus $29,426 for females. The per capita income for the county was $21,700. About 10.9% of families and 14.0% of the population were below the poverty line, including 22.7% of those under age 18 and 7.4% of those age 65 or over.[14]

Communities

Cities

Villages

Unincorporated communities

Townships

Former Townships

Notable people

Politics

United States presidential election results for Montgomery County, Illinois[15]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 9,544 69.36% 3,905 28.38% 312 2.27%
2016 8,630 66.50% 3,504 27.00% 844 6.50%
2012 6,776 55.60% 5,058 41.50% 354 2.90%
2008 6,150 47.64% 6,491 50.28% 268 2.08%
2004 6,851 52.99% 5,979 46.24% 100 0.77%
2000 6,226 47.55% 6,542 49.97% 325 2.48%
1996 4,770 37.76% 6,338 50.18% 1,523 12.06%
1992 4,407 29.70% 7,424 50.04% 3,006 20.26%
1988 6,388 46.43% 7,293 53.01% 78 0.57%
1984 8,191 56.08% 6,360 43.55% 54 0.37%
1980 8,947 58.04% 5,721 37.11% 747 4.85%
1976 7,379 46.56% 8,322 52.51% 147 0.93%
1972 9,025 56.71% 6,858 43.10% 30 0.19%
1968 7,547 46.19% 7,318 44.79% 1,474 9.02%
1964 6,425 37.78% 10,581 62.22% 0 0.00%
1960 9,178 50.97% 8,815 48.95% 14 0.08%
1956 9,945 56.36% 7,692 43.59% 8 0.05%
1952 10,014 54.95% 8,195 44.97% 16 0.09%
1948 8,348 50.73% 7,902 48.02% 205 1.25%
1944 8,989 52.74% 7,855 46.08% 201 1.18%
1940 10,497 51.65% 9,654 47.50% 174 0.86%
1936 8,140 42.92% 10,132 53.43% 692 3.65%
1932 5,945 34.71% 10,456 61.05% 725 4.23%
1928 8,999 54.29% 7,392 44.60% 184 1.11%
1924 8,022 47.26% 5,622 33.12% 3,331 19.62%
1920 7,429 52.92% 4,756 33.88% 1,854 13.21%
1916 7,065 44.65% 7,903 49.94% 856 5.41%
1912 1,476 18.20% 3,705 45.69% 2,928 36.11%
1908 3,782 45.64% 3,909 47.17% 596 7.19%
1904 3,489 47.98% 3,181 43.74% 602 8.28%
1900 3,583 45.43% 4,078 51.71% 225 2.85%
1896 3,622 46.02% 4,117 52.31% 132 1.68%
1892 2,935 41.01% 3,707 51.80% 515 7.20%


See also

References

  1. ^ a b "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved July 7, 2014.
  2. ^ "Hillsboro Illinois". City of Hillsboro. Retrieved February 15, 2012.
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. ^ Allan H. Keith, Historical Stories: About Greenville and Bond County, IL. Consulted on August 15, 2007.
  5. ^ 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.
  6. ^ a b "Monthly Averages for Hillsboro, Illinois". The Weather Channel. Retrieved January 27, 2011.
  7. ^ "Population and Housing Unit Estimates". Retrieved November 3, 2019.
  8. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 7, 2014.
  9. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 7, 2014.
  10. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 7, 2014.
  11. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 7, 2014.
  12. ^ 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.
  13. ^ "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.
  14. ^ "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.
  15. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved November 11, 2018.

Coordinates: 39°14′N 89°29′W / 39.23°N 89.48°W / 39.23; -89.48