Logan County | |
|---|---|
 Logan County Courthouse | |
 Location within the U.S. state ofIllinois | |
 Illinois's location within theU.S. | |
| Coordinates:40°08′N89°22′W / 40.13°N 89.36°W /40.13; -89.36 | |
| Country |  United States |
| State |  Illinois |
| Founded | February 15, 1839 |
| Named after | John A. Logan |
| Seat | Lincoln |
| Largest city | Lincoln |
| Area | |
• Total | 619 sq mi (1,600 km2) |
| • Land | 618 sq mi (1,600 km2) |
| • Water | 0.9 sq mi (2 km2) 0.1% |
| Population (2020) | |
• Total | 27,987 |
• Estimate (2021) | 27,992 |
| • Density | 45/sq mi (17/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 15th |
| Website | logancountyil |
Logan County is acounty located in theU.S. state ofIllinois. According to the2020 census, it had a population of 27,987.[1] Itscounty seat isLincoln.[2]
Logan County comprises the Lincoln, ILMicropolitan Statistical Area, which is included in theSpringfield-Jacksonville-Lincoln, ILCombined Statistical Area.
Established in 1839, Logan County was named after physician andState Representative John Logan, father ofUnion GeneralJohn Alexander Logan.[3]
According to theU.S. Census Bureau, the county has a total area of 619 square miles (1,600 km2), of which 618 square miles (1,600 km2) is land and 0.9 square miles (2.3 km2) (0.1%) is water.[4]
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In recent years, average temperatures in the county seat of Lincoln have ranged from a low of 15 °F (−9.4 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −29 °F (−33.9 °C) was recorded in December 1914 and a record high of 113 °F (45 °C) was recorded in July 1936. Average monthly precipitation ranged from 1.55 inches (39.4 mm) in February to 4.42 inches (112.3 mm) in May.[5]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1840 | 2,634 | — | |
| 1850 | 14,226 | 440.1% | |
| 1860 | 18,257 | 28.3% | |
| 1870 | 21,014 | 15.1% | |
| 1880 | 21,296 | 1.3% | |
| 1890 | 25,489 | 19.7% | |
| 1900 | 28,680 | 12.5% | |
| 1910 | 30,216 | 5.4% | |
| 1920 | 29,562 | −2.2% | |
| 1930 | 28,863 | −2.4% | |
| 1940 | 29,438 | 2.0% | |
| 1950 | 30,671 | 4.2% | |
| 1960 | 33,656 | 9.7% | |
| 1970 | 33,538 | −0.4% | |
| 1980 | 31,802 | −5.2% | |
| 1990 | 30,798 | −3.2% | |
| 2000 | 31,183 | 1.3% | |
| 2010 | 30,305 | −2.8% | |
| 2020 | 27,987 | −7.6% | |
| 2023 (est.) | 27,590 | [6] | −1.4% |
| U.S. Decennial Census[7] 1790-1960[8] 1900-1990[9] 1990-2000[10] 2010-2013[1] | |||
According to the2010 United States census, there were 30,305 people, 11,070 households, and 7,274 families residing in the county.[11] The population density was 49.0 inhabitants per square mile (18.9/km2). There were 12,107 housing units at an average density of 19.6 per square mile (7.6/km2).[4] The racial makeup of the county was 89.1% white, 7.5% black or African American, 0.6% Asian, 0.2% American Indian, 1.2% from other races, and 1.3% from two or more races. Those of Hispanic or Latino origin made up 2.9% of the population.[11] In terms of ancestry, 30.9% wereGerman, 17.4% wereAmerican, 13.1% wereIrish, and 10.8% wereEnglish.[12]
Of the 11,070 households, 29.7% had children under the age of 18 living with them, 50.3% were married couples living together, 10.6% had a female householder with no husband present, 34.3% were non-families, and 29.2% of all households were made up of individuals. The average household size was 2.34 and the average family size was 2.85. The median age was 39.4 years.[11]14.4% of the population were living in group quarters including 11.4% of the population institutionalized.[13]
The median income for a household in the county was $48,999 and the median income for a family was $63,245. Males had a median income of $43,940 versus $31,783 for females. The per capita income for the county was $22,063. About 6.8% of families and 9.8% of the population were below thepoverty line, including 15.1% of those under age 18 and 5.2% of those age 65 or over.[14]
TheIllinois Department of CorrectionsLogan Correctional Center is located inunincorporated Logan County, nearLincoln.[15]
In the period following the Civil War, Logan was a swing county, following the popular vote winner in every election up to 1936 except those of 1900 and 1916. Since 1940, when its isolationist sentiment drove voters toWendell Willkie, Logan has become a strongly Republican county. No Democratic presidential candidate has won Logan County sinceLyndon Johnson’s 1964 landslide overBarry Goldwater. In fact, apart from Johnson,Barack Obama in 2008 is the solitary Democrat to reach forty percent in the past nineteen elections.
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 2024 | 8,757 | 69.38% | 3,543 | 28.07% | 321 | 2.54% |
| 2020 | 9,136 | 68.55% | 3,840 | 28.81% | 351 | 2.63% |
| 2016 | 8,181 | 65.97% | 3,313 | 26.72% | 907 | 7.31% |
| 2012 | 7,844 | 64.89% | 3,978 | 32.91% | 266 | 2.20% |
| 2008 | 7,429 | 57.41% | 5,250 | 40.57% | 262 | 2.02% |
| 2004 | 9,112 | 67.66% | 4,273 | 31.73% | 82 | 0.61% |
| 2000 | 8,141 | 62.31% | 4,600 | 35.21% | 324 | 2.48% |
| 1996 | 6,518 | 52.80% | 4,618 | 37.41% | 1,209 | 9.79% |
| 1992 | 6,567 | 46.26% | 5,169 | 36.41% | 2,459 | 17.32% |
| 1988 | 8,490 | 63.90% | 4,727 | 35.58% | 69 | 0.52% |
| 1984 | 9,932 | 70.71% | 4,052 | 28.85% | 62 | 0.44% |
| 1980 | 9,681 | 67.39% | 3,916 | 27.26% | 769 | 5.35% |
| 1976 | 8,623 | 59.94% | 5,686 | 39.52% | 77 | 0.54% |
| 1972 | 10,277 | 69.95% | 4,395 | 29.91% | 20 | 0.14% |
| 1968 | 8,638 | 60.45% | 4,552 | 31.86% | 1,099 | 7.69% |
| 1964 | 6,805 | 46.88% | 7,712 | 53.12% | 0 | 0.00% |
| 1960 | 9,383 | 62.18% | 5,691 | 37.71% | 16 | 0.11% |
| 1956 | 9,589 | 66.61% | 4,793 | 33.29% | 14 | 0.10% |
| 1952 | 9,162 | 64.39% | 5,048 | 35.48% | 19 | 0.13% |
| 1948 | 7,431 | 60.36% | 4,832 | 39.25% | 49 | 0.40% |
| 1944 | 7,955 | 61.90% | 4,868 | 37.88% | 29 | 0.23% |
| 1940 | 8,929 | 56.78% | 6,753 | 42.94% | 43 | 0.27% |
| 1936 | 7,019 | 46.52% | 7,886 | 52.27% | 182 | 1.21% |
| 1932 | 5,850 | 41.44% | 8,119 | 57.52% | 147 | 1.04% |
| 1928 | 7,631 | 59.97% | 5,019 | 39.44% | 75 | 0.59% |
| 1924 | 7,063 | 57.16% | 3,708 | 30.01% | 1,585 | 12.83% |
| 1920 | 6,957 | 64.79% | 3,232 | 30.10% | 549 | 5.11% |
| 1916 | 5,933 | 48.26% | 5,726 | 46.58% | 635 | 5.17% |
| 1912 | 1,397 | 20.85% | 3,229 | 48.19% | 2,075 | 30.97% |
| 1908 | 3,451 | 47.44% | 3,546 | 48.74% | 278 | 3.82% |
| 1904 | 3,626 | 51.24% | 3,005 | 42.47% | 445 | 6.29% |
| 1900 | 3,501 | 47.73% | 3,672 | 50.06% | 162 | 2.21% |
| 1896 | 3,430 | 49.30% | 3,389 | 48.71% | 138 | 1.98% |
| 1892 | 2,619 | 42.54% | 3,150 | 51.17% | 387 | 6.29% |
K-12 school districts include:[17]
Secondary school districts include:[17]
Elementary school districts include:[17]
Places adjacent to Logan County, Illinois | |
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Municipalities and communities ofLogan County, Illinois,United States | ||
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| Cities |  | |
| Villages | ||
| Townships | ||
| CDPs | ||
| Other unincorporated communities | ||
| Ghost town | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
| International | |
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| National | |
| Other | |
