McLean County, Illinois | |
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 Location within the U.S. state ofIllinois | |
| Coordinates:40°29′N88°51′W / 40.49°N 88.85°W /40.49; -88.85 | |
| Country |  United States |
| State |  Illinois |
| Founded | December 25, 1830 |
| Named after | John McLean |
| Seat | Bloomington |
| Largest city | Bloomington |
| Area | |
• Total | 1,186 sq mi (3,070 km2) |
| • Land | 1,183 sq mi (3,060 km2) |
| • Water | 2.9 sq mi (7.5 km2) 0.2% |
| Population (2020) | |
• Total | 170,954 |
• Estimate (2024) | 172,069 [1] |
| • Density | 144.5/sq mi (55.80/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional districts | 16th,17th |
| Website | www |
McLean County is aU.S.county in the east central region ofIllinois, and is the largest county by land area in thestate. According to the2020 Census, it had a population of 170,954.[2] Itscounty seat isBloomington.[3] McLean County is included in theBloomington–Normal, ILMetropolitan Statistical Area.
Locally, the second syllable of McLean is pronounced with a 'long a' (ā, IPA /ei/) sound (i.e. “muh-KLAIN") (as with native son McLean Stevenson), not a 'long e' (ē, IPA /i/) sound (“muh-KLEEN").
The first white settlers in what became McLean County arrived around 1821.[4]: 69 The first settlement was Blooming Grove, established in 1822 near present-dayBloomington.[4]: 69 McLean County was formed on December 25, 1830, out ofTazewell County. It was named forJohn McLean,United States Senator for Illinois, who died in 1830.[5]
According to theU.S. Census Bureau, the county has a total area of 1,186 square miles (3,070 km2), of which 1,183 square miles (3,060 km2) is land and 2.9 square miles (7.5 km2) (0.2%) is water.[6] It is the largest county in Illinois by land area and third-largest by total area afterCook andLake Counties, which have large portions of their areas onLake Michigan. McLean County is actually larger than the land area ofRhode Island (1045 sq mi).
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In recent years, average temperatures in the county seat of Bloomington have ranged from a low of 14 °F (−10 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −23 °F (−31 °C) was recorded in January 1985 and a record high of 103 °F (39 °C) was recorded in June 1988. Average monthly precipitation ranged from 1.71 inches (43 mm) in February to 4.52 inches (115 mm) in May.[7]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1840 | 6,565 | — | |
| 1850 | 10,163 | 54.8% | |
| 1860 | 28,772 | 183.1% | |
| 1870 | 53,988 | 87.6% | |
| 1880 | 60,100 | 11.3% | |
| 1890 | 63,036 | 4.9% | |
| 1900 | 67,843 | 7.6% | |
| 1910 | 68,008 | 0.2% | |
| 1920 | 70,107 | 3.1% | |
| 1930 | 73,117 | 4.3% | |
| 1940 | 73,930 | 1.1% | |
| 1950 | 76,577 | 3.6% | |
| 1960 | 83,877 | 9.5% | |
| 1970 | 104,389 | 24.5% | |
| 1980 | 119,149 | 14.1% | |
| 1990 | 129,180 | 8.4% | |
| 2000 | 150,433 | 16.5% | |
| 2010 | 169,572 | 12.7% | |
| 2020 | 170,954 | 0.8% | |
| 2024 (est.) | 172,069 | [8] | 0.7% |
| U.S. Decennial Census[9] 1790-1960[10] 1900-1990[11] 1990-2000[12] 2010-2019[2] | |||
As of the2020 census, the county had a population of 170,954. The median age was 35.1 years, 21.5% of residents were under the age of 18, and 14.4% of residents were 65 years of age or older. For every 100 females there were 94.9 males, and for every 100 females age 18 and over there were 92.5 males age 18 and over.[13]
The racial makeup of the county was 77.3%White, 8.8%Black or African American, 0.3%American Indian and Alaska Native, 4.8%Asian, <0.1%Native Hawaiian andPacific Islander, 2.5% from some other race, and 6.3% fromtwo or more races.Hispanic or Latino residents of any race comprised 6.2% of the population.[14]
78.4% of residents lived in urban areas, while 21.6% lived in rural areas.[15]
There were 69,096 households in the county, of which 28.5% had children under the age of 18 living in them. Of all households, 45.2% were married-couple households, 20.4% were households with a male householder and no spouse or partner present, and 27.8% were households with a female householder and no spouse or partner present. About 31.5% of all households were made up of individuals and 10.3% had someone living alone who was 65 years of age or older.[13]
There were 74,855 housing units, of which 7.7% were vacant. Among occupied housing units, 64.2% were owner-occupied and 35.8% were renter-occupied. The homeowner vacancy rate was 1.5% and the rental vacancy rate was 9.6%.[13]
| Race / Ethnicity(NH = Non-Hispanic) | Pop 1980[16] | Pop 1990[17] | Pop 2000[18] | Pop 2010[19] | Pop 2020[20] | % 1980 | % 1990 | % 2000 | % 2010 | % 2020 |
|---|---|---|---|---|---|---|---|---|---|---|
| White alone (NH) | 112,222 | 120,156 | 132,224 | 138,835 | 129,440 | 94.19% | 93.01% | 87.90% | 81.87% | 75.72% |
| Black or African American alone (NH) | 4,689 | 5,485 | 9,189 | 12,246 | 14,699 | 3.94% | 4.25% | 6.11% | 7.22% | 8.60% |
| Native American orAlaska Native alone (NH) | 106 | 180 | 224 | 290 | 258 | 0.09% | 0.14% | 0.15% | 0.17% | 0.15% |
| Asian alone (NH) | 811 | 1,609 | 3,072 | 7,180 | 8,108 | 0.68% | 1.25% | 2.04% | 4.23% | 4.74% |
| Native Hawaiian orPacific Islander alone (NH) | x[21] | x[22] | 43 | 48 | 38 | x | x | 0.03% | 0.03% | 0.02% |
| Other race alone (NH) | 202 | 79 | 145 | 203 | 618 | 0.17% | 0.06% | 0.10% | 0.12% | 0.36% |
| Mixed race or Multiracial (NH) | x[23] | x[24] | 1,703 | 3,336 | 7,269 | x | x | 1.13% | 1.97% | 4.25% |
| Hispanic or Latino (any race) | 1,119 | 1,671 | 3,833 | 7,434 | 10,524 | 0.94% | 1.29% | 2.55% | 4.38% | 6.16% |
| Total | 119,149 | 129,180 | 150,433 | 169,572 | 170,954 | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |
As of the2010 United States census, there were 169,572 people, 65,104 households, and 40,124 families residing in the county.[25] The population density was 143.3 inhabitants per square mile (55.3/km2). There were 69,656 housing units at an average density of 58.9 per square mile (22.7/km2).[6] The racial makeup of the county was 84.3% white, 7.3% black or African American, 4.3% Asian, 0.2% American Indian, 1.5% from other races, and 2.3% from two or more races. Those of Hispanic or Latino origin made up 4.4% of the population.[25] In terms of ancestry, 31.2% wereGerman, 15.4% wereIrish, 11.4% wereAmerican, and 11.0% wereEnglish.[26]
Of the 65,104 households, 31.4% had children under the age of 18 living with them, 48.5% were married couples living together, 9.6% had a female householder with no husband present, 38.4% were non-families, and 28.1% of all households were made up of individuals. The average household size was 2.44 and the average family size was 3.02. The median age was 32.1 years.[25]
The median income for a household in the county was $57,642 and the median income for a family was $77,093. Males had a median income of $52,271 versus $39,685 for females. The per capita income for the county was $28,167. About 6.2% of families and 12.9% of the population were below thepoverty line, including 11.4% of those under age 18 and 5.5% of those age 65 or over.[27]
McLean County is divided into thesetownships:
McLean County has a twenty-member board representing ten districts within the county. Each district elects two members. Districts 1-3 encompass all of the county outside of Bloomington and Normal. Districts 4-6 are within the town limits of Normal, and districts 7-10 are within Bloomington city limits.
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 1892 | 7,445 | 50.43% | 6,487 | 43.94% | 832 | 5.64% |
| 1896 | 9,964 | 59.62% | 6,328 | 37.87% | 420 | 2.51% |
| 1900 | 9,487 | 56.41% | 6,613 | 39.32% | 718 | 4.27% |
| 1904 | 8,772 | 58.66% | 4,149 | 27.74% | 2,034 | 13.60% |
| 1908 | 8,953 | 55.88% | 5,982 | 37.33% | 1,088 | 6.79% |
| 1912 | 4,624 | 30.23% | 5,356 | 35.02% | 5,314 | 34.75% |
| 1916 | 14,988 | 53.22% | 11,699 | 41.54% | 1,473 | 5.23% |
| 1920 | 16,680 | 65.27% | 6,411 | 25.09% | 2,464 | 9.64% |
| 1924 | 16,550 | 55.95% | 6,826 | 23.07% | 6,206 | 20.98% |
| 1928 | 20,780 | 65.37% | 10,742 | 33.79% | 267 | 0.84% |
| 1932 | 15,450 | 43.07% | 19,535 | 54.46% | 886 | 2.47% |
| 1936 | 16,826 | 43.00% | 21,508 | 54.96% | 798 | 2.04% |
| 1940 | 21,865 | 54.44% | 18,024 | 44.87% | 277 | 0.69% |
| 1944 | 19,366 | 57.70% | 14,011 | 41.75% | 185 | 0.55% |
| 1948 | 18,430 | 58.48% | 12,904 | 40.94% | 183 | 0.58% |
| 1952 | 24,494 | 64.75% | 13,296 | 35.15% | 36 | 0.10% |
| 1956 | 25,758 | 67.59% | 12,332 | 32.36% | 21 | 0.06% |
| 1960 | 24,758 | 63.87% | 13,971 | 36.04% | 32 | 0.08% |
| 1964 | 19,120 | 49.44% | 19,550 | 50.56% | 0 | 0.00% |
| 1968 | 22,284 | 59.22% | 12,779 | 33.96% | 2,567 | 6.82% |
| 1972 | 31,060 | 67.59% | 14,824 | 32.26% | 71 | 0.15% |
| 1976 | 28,493 | 62.10% | 16,601 | 36.18% | 785 | 1.71% |
| 1980 | 30,096 | 61.13% | 13,587 | 27.60% | 5,549 | 11.27% |
| 1984 | 32,221 | 66.64% | 15,880 | 32.84% | 248 | 0.51% |
| 1988 | 30,572 | 61.75% | 18,659 | 37.69% | 280 | 0.57% |
| 1992 | 25,726 | 43.39% | 23,090 | 38.95% | 10,469 | 17.66% |
| 1996 | 26,428 | 49.46% | 22,708 | 42.50% | 4,299 | 8.05% |
| 2000 | 34,008 | 55.84% | 24,936 | 40.95% | 1,954 | 3.21% |
| 2004 | 41,276 | 57.63% | 29,877 | 41.72% | 467 | 0.65% |
| 2008 | 36,767 | 48.46% | 37,689 | 49.67% | 1,422 | 1.87% |
| 2012 | 39,947 | 54.37% | 31,883 | 43.40% | 1,639 | 2.23% |
| 2016 | 37,237 | 45.79% | 36,196 | 44.51% | 7,891 | 9.70% |
| 2020 | 40,502 | 46.35% | 43,933 | 50.27% | 2,952 | 3.38% |
| 2024 | 40,290 | 46.25% | 44,495 | 51.08% | 2,330 | 2.67% |
Like most of central Illinois, McLean County is historically Republican-leaning. The only Democrats to gain an absolute majority of the county's vote before the 21st century have beenFranklin D. Roosevelt in 1932 and 1936, andLyndon Johnson by a mere 1.2% in 1964.Woodrow Wilson in 1912 and Illinois residentBarack Obama in 2008 both carried the county by narrow pluralities.
In recent years, however, McLean has trended sufficiently Democratic thatHillary Clinton in2016 lost the county by just 1.3 percent, whileJoe Biden won the county in2020 with a narrow majority.
Further solidifying the county's leftward shift in the 2020s, GovernorJ. B. Pritzker won the county by 1.3% in2022, making it the first time since 1948 it supported a Democrat for governor.
In2024,Kamala Harris became the first Democratic presidential nominee to win McLean County yet lose the presidential election. The county shifted left by about 1% from 2020 to 2024, despite both Illinois and the country shifting rightward.
McLean County is one of only thirteen counties to have voted for Obama in 2008, Romney in 2012, Trump in 2016, and Biden in 2020.[a]
Here is a list of school districts (all fully K-12) with territory in the county, no matter how slight, even if the district's schools and/or administrative offices are not in the county:[32]
Illinois State University is in the county.
Places adjacent to McLean County, Illinois | |
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Municipalities and communities ofMcLean County, Illinois,United States | ||
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| Ghost towns | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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| National | |
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