Marshall County, Illinois | |
|---|---|
 Lacon Bridge in the county seat | |
 Location within the U.S. state ofIllinois | |
 Illinois's location within theU.S. | |
| Coordinates:41°02′N89°20′W / 41.03°N 89.34°W /41.03; -89.34 | |
| Country |  United States |
| State |  Illinois |
| Founded | January 19, 1839 |
| Named after | John Marshall |
| Seat | Lacon |
| Largest city | Henry |
| Area | |
• Total | 399 sq mi (1,030 km2) |
| • Land | 387 sq mi (1,000 km2) |
| • Water | 12 sq mi (31 km2) 2.9% |
| Population (2020) | |
• Total | 11,742 |
• Estimate (2024) | 11,552 [1] |
| • Density | 30.3/sq mi (11.7/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 16th |
| Website | www |
Marshall County is acounty located in theU.S. state ofIllinois. According to the2020 census, it had a population of 11,742.[2] Itscounty seat isLacon.[3] Marshall County is part of thePeoria metropolitan area.
Marshall County was formed in 1839 out ofPutnam County. It was named in honor ofJohn Marshall, Chief Justice of theUnited States Supreme Court, who died in 1835.[4]
According to theU.S. Census Bureau, the county has a total area of 399 square miles (1,030 km2), of which 387 square miles (1,000 km2) is land and 12 square miles (31 km2) (2.9%) is water.[5] The county is distinctly bisected by theIllinois River, splitting the county into two uneven sections.[citation needed]
| Lacon, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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In recent years, average temperatures in the county seat of Lacon have ranged from a low of 15 °F (−9 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1999 and a record high of 103 °F (39 °C) was recorded in July 2005. Average monthly precipitation ranged from 1.55 inches (39 mm) in January to 4.20 inches (107 mm) in May.[6]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1840 | 1,849 | — | |
| 1850 | 5,180 | 180.2% | |
| 1860 | 13,437 | 159.4% | |
| 1870 | 16,956 | 26.2% | |
| 1880 | 15,055 | −11.2% | |
| 1890 | 13,653 | −9.3% | |
| 1900 | 16,370 | 19.9% | |
| 1910 | 15,679 | −4.2% | |
| 1920 | 14,760 | −5.9% | |
| 1930 | 13,023 | −11.8% | |
| 1940 | 13,179 | 1.2% | |
| 1950 | 13,025 | −1.2% | |
| 1960 | 13,334 | 2.4% | |
| 1970 | 13,302 | −0.2% | |
| 1980 | 14,479 | 8.8% | |
| 1990 | 12,846 | −11.3% | |
| 2000 | 13,180 | 2.6% | |
| 2010 | 12,640 | −4.1% | |
| 2020 | 11,742 | −7.1% | |
| 2024 (est.) | 11,552 | [7] | −1.6% |
| U.S. Decennial Census[8] 1790-1960[9] 1900-1990[10] 1990-2000[11] 2010[12] | |||
| Race / Ethnicity(NH = Non-Hispanic) | Pop 1980[13] | Pop 1990[14] | Pop 2000[15] | Pop 2010[16] | Pop 2020[17] | % 1980 | % 1990 | % 2000 | % 2010 | % 2020 |
|---|---|---|---|---|---|---|---|---|---|---|
| White alone (NH) | 14,380 | 12,693 | 12,860 | 12,128 | 10,858 | 99.32% | 98.81% | 97.57% | 95.95% | 92.47% |
| Black or African American alone (NH) | 15 | 17 | 45 | 44 | 86 | 0.10% | 0.13% | 0.34% | 0.35% | 0.73% |
| Native American orAlaska Native alone (NH) | 11 | 29 | 28 | 17 | 18 | 0.08% | 0.23% | 0.21% | 0.13% | 0.15% |
| Asian alone (NH) | 15 | 26 | 24 | 43 | 43 | 0.10% | 0.20% | 0.18% | 0.34% | 0.37% |
| Native Hawaiian orPacific Islander alone (NH) | x[18] | x[19] | 1 | 2 | 0 | x | x | 0.01% | 0.02% | 0.00% |
| Other race alone (NH) | 4 | 2 | 2 | 3 | 25 | 0.03% | 0.02% | 0.02% | 0.02% | 0.21% |
| Mixed race or Multiracial (NH) | x[20] | x[21] | 82 | 89 | 389 | x | x | 0.62% | 0.70% | 3.31% |
| Hispanic or Latino (any race) | 54 | 79 | 138 | 314 | 323 | 0.37% | 0.61% | 1.05% | 2.48% | 2.75% |
| Total | 14,479 | 12,846 | 13,180 | 12,640 | 11,742 | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |
As of the2010 United States census, there were 12,640 people, 5,161 households, and 3,549 families living in the county.[22] The population density was 32.7 inhabitants per square mile (12.6/km2). There were 5,914 housing units at an average density of 15.3 per square mile (5.9/km2).[5] The racial makeup of the county was 97.1% white, 0.4% Asian, 0.3% black or African American, 0.2% American Indian, 1.1% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 2.5% of the population.[22] In terms of ancestry, 43.0% wereGerman, 16.7% wereIrish, 14.4% wereEnglish, 7.2% wereItalian, 6.2% wereAmerican, and 6.1% werePolish.[23]
Of the 5,161 households, 27.4% had children under the age of 18 living with them, 56.7% were married couples living together, 7.7% had a female householder with no husband present, 31.2% were non-families, and 26.8% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.88. The median age was 44.8 years.[22]
The median income for a household in the county was $49,116 and the median income for a family was $64,781. Males had a median income of $46,793 versus $28,549 for females. The per capita income for the county was $24,991. About 6.8% of families and 9.5% of the population were below thepoverty line, including 11.4% of those under age 18 and 7.0% of those age 65 or over.[24]
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In its early days Marshall County was aswing county, voting for winning Whig candidate William Henry Harrison in 1840 but otherwise supporting the Democratic Party until 1852. Its reputation as a swing county was to be sustained with the growth of the Republican Party: it voted for the winning candidate in every election from 1852 to 1912 except 1884 and 1888.[citation needed]
SinceWorld War I, Marshall has generally been a strongly Republican county. Only two Democrats – Franklin D. Roosevelt in 1932 and 1936 plus Lyndon Johnson in 1964 – have gained an absolute majority in Marshall County over the past twenty-six elections, althoughBill Clinton won pluralities in both his elections.[citation needed]
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 1892 | 1,590 | 44.99% | 1,834 | 51.90% | 110 | 3.11% |
| 1896 | 2,216 | 53.26% | 1,888 | 45.37% | 57 | 1.37% |
| 1900 | 2,210 | 52.78% | 1,908 | 45.57% | 69 | 1.65% |
| 1904 | 2,190 | 55.97% | 1,545 | 39.48% | 178 | 4.55% |
| 1908 | 1,893 | 50.13% | 1,714 | 45.39% | 169 | 4.48% |
| 1912 | 790 | 20.97% | 1,685 | 44.72% | 1,293 | 34.32% |
| 1916 | 3,579 | 55.83% | 2,593 | 40.45% | 238 | 3.71% |
| 1920 | 3,734 | 67.61% | 1,568 | 28.39% | 221 | 4.00% |
| 1924 | 3,776 | 58.41% | 1,836 | 28.40% | 853 | 13.19% |
| 1928 | 4,029 | 58.69% | 2,828 | 41.19% | 8 | 0.12% |
| 1932 | 3,166 | 43.10% | 4,133 | 56.27% | 46 | 0.63% |
| 1936 | 3,544 | 45.67% | 4,149 | 53.47% | 67 | 0.86% |
| 1940 | 4,527 | 57.23% | 3,343 | 42.26% | 40 | 0.51% |
| 1944 | 4,195 | 61.68% | 2,596 | 38.17% | 10 | 0.15% |
| 1948 | 3,785 | 59.91% | 2,514 | 39.79% | 19 | 0.30% |
| 1952 | 4,850 | 67.35% | 2,343 | 32.54% | 8 | 0.11% |
| 1956 | 4,764 | 67.92% | 2,245 | 32.01% | 5 | 0.07% |
| 1960 | 4,150 | 58.14% | 2,981 | 41.76% | 7 | 0.10% |
| 1964 | 3,209 | 47.40% | 3,561 | 52.60% | 0 | 0.00% |
| 1968 | 3,897 | 58.36% | 2,455 | 36.77% | 325 | 4.87% |
| 1972 | 4,452 | 67.43% | 2,141 | 32.43% | 9 | 0.14% |
| 1976 | 4,017 | 60.30% | 2,570 | 38.58% | 75 | 1.13% |
| 1980 | 4,349 | 64.80% | 1,903 | 28.36% | 459 | 6.84% |
| 1984 | 4,060 | 62.53% | 2,386 | 36.75% | 47 | 0.72% |
| 1988 | 3,588 | 56.35% | 2,742 | 43.07% | 37 | 0.58% |
| 1992 | 2,491 | 38.35% | 2,819 | 43.40% | 1,186 | 18.26% |
| 1996 | 2,453 | 42.93% | 2,640 | 46.20% | 621 | 10.87% |
| 2000 | 3,145 | 53.24% | 2,570 | 43.51% | 192 | 3.25% |
| 2004 | 3,734 | 56.71% | 2,806 | 42.62% | 44 | 0.67% |
| 2008 | 3,145 | 49.54% | 3,081 | 48.53% | 122 | 1.92% |
| 2012 | 3,290 | 56.06% | 2,455 | 41.83% | 124 | 2.11% |
| 2016 | 3,785 | 63.25% | 1,789 | 29.90% | 410 | 6.85% |
| 2020 | 4,197 | 66.15% | 2,005 | 31.60% | 143 | 2.25% |
| 2024 | 4,119 | 66.93% | 1,913 | 31.09% | 122 | 1.98% |
Places adjacent to Marshall County, Illinois | ||||||||||||||||
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Municipalities and communities ofMarshall County, Illinois,United States | ||
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| Cities |  | |
| Villages | ||
| Townships | ||
| Unincorporated communities | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
| International | |
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| National | |
| Other | |
