Knox County
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Location within the U.S. state of Illinois
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Illinois's location within the U.S.
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| Coordinates: 40°56′N 90°13′W / 40.93°N 90.21°W / 40.93; -90.21 | |
| Country |  United States |
| State |  Illinois |
| Founded | 1825 |
| Named for | Henry Knox |
| Seat | Galesburg |
| Largest city | Galesburg |
| Government | |
| • Board Chairman | Jared Hawkinson |
| Area | |
| • Total | 720 sq mi (1,900 km2) |
| • Land | 716 sq mi (1,850 km2) |
| • Water | 3.4 sq mi (9 km2) 0.5% |
| Population
(2020)
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| • Total | 49,967 |
| • Density | 69/sq mi (27/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 17th |
| Website | www |
Knox County is a county in the U.S. stateofIllinois. According to the 2020 census, it had a population of 49,967.[1] Its county seatisGalesburg.[2]
Knox County comprises the Galesburg, IL Micropolitan Statistical Area.
Knox County was named in honor of Henry Knox, the first US Secretary of War.[3]
The first "Knox County" in what today is Illinois was unrelated to the modern incarnation. In 1790, the land of the Indiana Territory that was to become Illinois was divided into two counties: St. Clair and Knox. The latter included land in what was to become Indiana. When Knox County, Indiana, was formed from this portion of the county in 1809, the Illinois portions were subdivided into counties that were given other names.
The modern Knox County, Illinois, was organized in 1825, from Fulton County, itself a portion of the original St. Clair County.
Like its neighbor to the south, Fulton County, for its Spoon River Drive, Knox County is also known for a similar scenic drive fall festival the first two weekends in October, the Knox County Drive.
According to the U.S. Census Bureau, the county has a total area of 720 square miles (1,900 km2), of which 716 square miles (1,850 km2) is land and 3.4 square miles (8.8 km2) (0.5%) is water.[4]
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In recent years, average temperatures in the county seat of Galesburg have ranged from a low of 13 °F (−11 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −25 °F (−32 °C) was recorded in January 1982 and a record high of 102 °F (39 °C) was recorded in July 1983. Average monthly precipitation ranged from 1.41 inches (36 mm) in January to 4.37 inches (111 mm) in July.[5]
U.S. Highway 34
U.S. Highway 150
Illinois Route 8
Illinois Route 17
Illinois Route 41
Illinois Route 78
Illinois Route 97
Illinois Route 164
Illinois Route 116
Illinois Route 167
Illinois Route 180| Census | Pop. | Note | %± |
|---|---|---|---|
| 1830 | 274 | — | |
| 1840 | 7,060 | 2,476.6% | |
| 1850 | 13,279 | 88.1% | |
| 1860 | 28,663 | 115.9% | |
| 1870 | 39,522 | 37.9% | |
| 1880 | 38,344 | −3.0% | |
| 1890 | 38,752 | 1.1% | |
| 1900 | 43,612 | 12.5% | |
| 1910 | 46,159 | 5.8% | |
| 1920 | 46,727 | 1.2% | |
| 1930 | 51,336 | 9.9% | |
| 1940 | 52,250 | 1.8% | |
| 1950 | 54,366 | 4.0% | |
| 1960 | 61,280 | 12.7% | |
| 1970 | 61,280 | 0.0% | |
| 1980 | 61,607 | 0.5% | |
| 1990 | 56,393 | −8.5% | |
| 2000 | 55,836 | −1.0% | |
| 2010 | 52,919 | −5.2% | |
| 2020 | 49,967 | −5.6% | |
| 2023 (est.) | 48,411 | [6] | −3.1% |
| U.S. Decennial Census[7] 1790-1960[8] 1900-1990[9] 1990-2000[10] 2010-2013[1] | |||
As of the 2010 United States Census, there were 52,919 people, 21,535 households, and 13,324 families residing in the county.[11] The population density was 73.9 inhabitants per square mile (28.5/km2). There were 24,077 housing units at an average density of 33.6 per square mile (13.0/km2).[4] The racial makeup of the county was 87.5% white, 7.2% black or African American, 0.6% Asian, 0.2% American Indian, 1.9% from other races, and 2.5% from two or more races. Those of Hispanic or Latino origin made up 4.8% of the population.[11] In terms of ancestry, 23.1% were German, 14.9% were Irish, 11.7% were English, 11.6% were Swedish, and 8.0% were American.[12]
Of the 21,535 households, 27.2% had children under the age of 18 living with them, 45.7% were married couples living together, 11.9% had a female householder with no husband present, 38.1% were non-families, and 32.3% of all households were made up of individuals. The average household size was 2.27 and the average family size was 2.84. The median age was 42.0 years.[11]
The median income for a household in the county was $39,545 and the median income for a family was $51,740. Males had a median income of $42,067 versus $25,380 for females. The per capita income for the county was $20,908. About 10.9% of families and 15.5% of the population were below the poverty line, including 24.7% of those under age 18 and 7.3% of those age 65 or over.[13]
Knox County is divided into twenty-one townships:
Knox County's political history is typical of Yankee-settled Northern Illinois. It leaned Whig during its early elections – although giving a plurality to Franklin Pierce in 1852 – and become powerfully Republican following that party's formation. Although Knox did support Progressive Theodore Roosevelt against conservative incumbent President William Howard Taft in 1912, it was Franklin D. Roosevelt’s 1932 landslide before Knox County again gave the Democratic Party so much as a plurality, and it did not give a Democratic absolute majority until Lyndon B. Johnson gained such against the anti-Yankee, Southern-leaning Barry Goldwater in 1964.
Since then, Knox County gradually trended Democratic for the following four decades, so that Michael Dukakis in his losing 1988 campaign was able to carry the county by the same margin as Johnson had done in 1964. During the 1990s and 2000s, Knox was a solidly Democratic county, voting Democratic by at least nine percentage points in every election from 1992 to 2012. The 2016 election, in the shadow of high unemployment in the “Rust Belt” saw a swing of over twenty percentage points to Donald Trump, who became the first Republican victor in the county since Ronald Reagan in 1984.
| Year | Republican | Democratic | Third party | |||
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| No. | % | No. | % | No. | % | |
| 2020 | 12,009 | 51.75% | 10,703 | 46.12% | 496 | 2.14% |
| 2016 | 10,737 | 47.71% | 10,083 | 44.81% | 1,683 | 7.48% |
| 2012 | 9,408 | 40.28% | 13,451 | 57.59% | 497 | 2.13% |
| 2008 | 9,419 | 39.09% | 14,191 | 58.89% | 488 | 2.03% |
| 2004 | 11,111 | 44.97% | 13,403 | 54.25% | 194 | 0.79% |
| 2000 | 9,912 | 42.77% | 12,572 | 54.25% | 690 | 2.98% |
| 1996 | 7,822 | 34.69% | 12,487 | 55.38% | 2,239 | 9.93% |
| 1992 | 8,331 | 32.93% | 12,524 | 49.51% | 4,441 | 17.56% |
| 1988 | 10,842 | 45.75% | 12,752 | 53.81% | 106 | 0.45% |
| 1984 | 14,974 | 55.21% | 12,027 | 44.34% | 121 | 0.45% |
| 1980 | 14,907 | 56.90% | 8,749 | 33.40% | 2,542 | 9.70% |
| 1976 | 14,123 | 54.39% | 11,525 | 44.38% | 319 | 1.23% |
| 1972 | 17,315 | 64.69% | 9,333 | 34.87% | 118 | 0.44% |
| 1968 | 14,216 | 53.86% | 9,707 | 36.77% | 2,473 | 9.37% |
| 1964 | 12,850 | 46.14% | 15,000 | 53.86% | 0 | 0.00% |
| 1960 | 17,938 | 60.09% | 11,889 | 39.83% | 23 | 0.08% |
| 1956 | 18,656 | 66.04% | 9,558 | 33.83% | 37 | 0.13% |
| 1952 | 18,569 | 64.16% | 10,354 | 35.78% | 17 | 0.06% |
| 1948 | 15,016 | 60.18% | 9,772 | 39.16% | 164 | 0.66% |
| 1944 | 15,964 | 61.02% | 10,070 | 38.49% | 126 | 0.48% |
| 1940 | 17,459 | 57.77% | 12,597 | 41.68% | 168 | 0.56% |
| 1936 | 14,712 | 50.52% | 13,697 | 47.03% | 715 | 2.46% |
| 1932 | 12,244 | 49.14% | 12,282 | 49.29% | 392 | 1.57% |
| 1928 | 16,151 | 72.33% | 5,993 | 26.84% | 186 | 0.83% |
| 1924 | 12,968 | 65.89% | 2,617 | 13.30% | 4,095 | 20.81% |
| 1920 | 12,559 | 73.85% | 2,852 | 16.77% | 1,594 | 9.37% |
| 1916 | 10,918 | 58.82% | 6,785 | 36.55% | 860 | 4.63% |
| 1912 | 1,750 | 16.72% | 2,758 | 26.35% | 5,959 | 56.93% |
| 1908 | 7,084 | 63.83% | 3,277 | 29.53% | 737 | 6.64% |
| 1904 | 7,566 | 73.84% | 1,849 | 18.04% | 832 | 8.12% |
| 1900 | 7,810 | 67.62% | 3,299 | 28.57% | 440 | 3.81% |
| 1896 | 7,681 | 67.39% | 3,480 | 30.53% | 236 | 2.07% |
| 1892 | 5,800 | 60.49% | 3,073 | 32.05% | 715 | 7.46% |
Places adjacent to Knox County, Illinois
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Municipalities and communities of Knox County, Illinois, United States
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| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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40°56′N 90°13′W / 40.93°N 90.21°W / 40.93; -90.21
