Hancock County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 17,620. Its county seat is Carthage, and its largest city is Hamilton. The county is composed of rural towns with many farmers.

Hancock County is part of the Fort Madison-Keokuk, IA-IL-MO Micropolitan Statistical Area.

History

Hancock County was part of the "Military Tract" set aside by Congress to reward veterans of the War of 1812. Actual settlement of the interior of the county was delayed by concerns about hostile American Indians. After their defeat in the Blackhawk War in 1832, settlement proceeded quickly.

Hancock County was formed, on January 13, 1825, out of Pike County. It was named in honor of John Hancock, who signed the Declaration of Independence.

For a brief period in the 1840s Hancock had one of Illinois' most populous cities: Nauvoo, which was then headquarters for the Church of Jesus Christ of Latter Day Saints. The movement's founder Joseph Smith was killed in the county seat of Carthage in 1844. Most Mormons left Hancock County in the 1840s. Today, Latter Day Saints come in increasing numbers to important Latter Day Saint sites in Hancock County, partly for vacation and partly for religious pilgrimage.

The original courthouse was at Montebello. Montebello no longer exists but was between Nauvoo and Hamilton. In 1833 the state commissioned the formation of the county seat at Carthage, which was centrally located but not well developed. A log cabin was built to serve as the courthouse and served that purpose until 1839 when the second Carthage Courthouse was built. The original log cabin continued to serve as a school and other purposes until 1945 when it was removed.

The second courthouse cost $3,700 to build and served from 1839 until 1906. It served as a location for Stephen A. Douglas (October 11, 1858) and Abraham Lincoln (October 22, 1858) to speak to residents as they were running against each other for the US Senate. In 1906 it was removed to make room for the current courthouse.

The current courthouse was dedicated October 21, 1908.

Township organization

Hancock was one of 24 Illinois counties that moved immediately to adopt township government upon the adoption of the Illinois Constitution of 1848, which authorized township government, and the passage of the Township Organization Act by the 16th Illinois General Assembly in 1849. The county's voters approved township organization at the November 6, 1849 general election. The Illinois Secretary of State recognizes this as the date of establishment of Hancock County's original townships. However, the townships were not named and delineated until the following year.

The appointed commissioners filed their report on February 26, 1850, dividing the county into 19 townships. Elections for officers of these newly created townships were held on the first Tuesday of April 1850. The county's new Board of Supervisors, made up of each township's elected supervisor, convened for the first time on August 12, 1850.

In 1851, the state legislature passed a law that allowed a county's voters to vote at the annual township meeting to reverse the decision to adopt township organization. Hancock County was the only county in the state to vote to dissolve its townships under this law, which it did in April 1852 thanks to overwhelming anti-township majorities at the Warsaw and Carthage township meetings. The validity of this 1852 vote was challenged in the courts. The following year, the state legislature passed special legislation to allow Hancock County to hold a new referendum on township organization. The referendum passed in March 1853, reaffirming the county's shift to township government.

Later, in December 1853, the Illinois Supreme Court struck down the 1851 law in People v. Couchman. The Couchman decision confirmed that Hancock County had been continuously under township organization since 1850. It held the 1851 law unconstitutional because the law improperly allowed township organization to be reversed at a township meeting rather than a general election, and thus with less formality than had been required for the original decision to adopt townships. The decision also ended the county court's attempts to continue its governmental operations, which had persisted even after the March 1853 referendum.

A further vote on whether to dissolve Hancock County's townships was held in 1873. It failed by a three-to-one margin, carrying majorities only in Hancock and Carthage townships.

Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (2.5%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Carthage have ranged from a low of in January to a high of in July, although a record low of was recorded in February 1905 and a record high of was recorded in August 1934. Average monthly precipitation ranged from in January to in May.

Major highways

Adjacent counties Lee County, Iowa - northwest Henderson County - northeast McDonough County - east Schuyler County - southeast Adams County - south Lewis County, Missouri - southwest Clark County, Missouri - west

Demographics

2020 census As of the 2020 census, the county had a population of 17,620. The median age was 46.1 years. 21.3% of residents were under the age of 18 and 23.9% of residents were 65 years of age or older. For every 100 females there were 98.8 males, and for every 100 females age 18 and over there were 96.9 males age 18 and over.

The racial makeup of the county was 94.7% White, 0.4% Black or African American, 0.3% American Indian and Alaska Native, 0.3% Asian, <0.1% Native Hawaiian and Pacific Islander, 0.7% from some other race, and 3.6% from two or more races. Hispanic or Latino residents of any race comprised 1.8% of the population.

16.0% of residents lived in urban areas, while 84.0% lived in rural areas.

There were 7,556 households in the county, of which 25.8% had children under the age of 18 living in them. Of all households, 51.2% were married-couple households, 19.1% were households with a male householder and no spouse or partner present, and 23.4% were households with a female householder and no spouse or partner present. About 30.7% of all households were made up of individuals and 15.5% had someone living alone who was 65 years of age or older.

There were 8,952 housing units, of which 15.6% were vacant. Among occupied housing units, 80.8% were owner-occupied and 19.2% were renter-occupied. The homeowner vacancy rate was 2.6% and the rental vacancy rate was 14.7%.

Racial and ethnic composition +Hancock County, Illinois – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 1980Pop 1990Pop 2000Pop 2010 Pop 2020% 1980% 1990% 2000% 2010% 2020White alone (NH)23,63821,23019,78018,61116,59999.00%99.33%98.31%97.42%94.21%Black or African American alone (NH)54263851730.23%0.12%0.19%0.27%0.41%Native American or Alaska Native alone (NH)26203034380.11%0.09%0.15%0.18%0.22%Asian alone (NH)40364645570.17%0.17%0.23%0.24%0.32%Native Hawaiian or Pacific Islander alone (NH)x included in the Asian category in the 1980 Censusx included in the Asian category in the 1990 Census5114xx0.02%0.06%0.02%Other race alone (NH)223912290.09%0.01%0.04%0.06%0.16%Mixed race or Multiracial (NH)x not an option in the 1980 Censusx not an option in the 1990 Census108155502xx0.54%0.81%2.85%Hispanic or Latino (any race)97581051853180.41%0.27%0.52%0.97%1.80%Total23,87721,37320,12119,10417,620 100.00%100.00%100.00%100.00%100.00%

2010 census As of the 2010 United States census, there were 19,104 people, 8,040 households, and 5,427 families residing in the county. The population density was . There were 9,274 housing units at an average density of . The racial makeup of the county was 98.0% white, 0.3% black or African American, 0.2% Asian, 0.2% American Indian, 0.1% Pacific islander, 0.3% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.0% of the population. In terms of ancestry, 34.7% were German, 13.8% were English, 13.2% were American, and 12.1% were Irish.

Of the 8,040 households, 27.5% had children under the age of 18 living with them, 55.3% were married couples living together, 8.3% had a female householder with no husband present, 32.5% were non-families, and 28.2% of all households were made up of individuals. The average household size was 2.35 and the average family size was 2.85. The median age was 44.6 years.

The median income for a household in the county was $42,857 and the median income for a family was $55,162. Males had a median income of $41,609 versus $27,648 for females. The per capita income for the county was $22,885. About 8.9% of families and 12.6% of the population were below the poverty line, including 17.8% of those under age 18 and 9.9% of those age 65 or over.

Politics Hancock County is in Illinois's 15th Congressional District and is currently represented by Republican Mary Miller. For the Illinois House of Representatives, the county is in the 94th district and is represented by Republican Norine Hammond. The county is in the 47th district of the Illinois Senate, and is represented by Republican Jil Tracy.

In presidential elections, Hancock County usually favors Republican candidates, having voted for Democratic presidential candidates only four times during the period of 1940 to 2024 (in 1964, 1988, 1992, and 1996).

Communities

Cities Carthage (seat) Dallas City (partly in Henderson County) Hamilton La Harpe Nauvoo Warsaw

Town Bentley

Villages

Augusta Basco Bowen Elvaston Ferris Plymouth Pontoosuc West Point

Census-designated place

Niota

Unincorporated communities

Adrian Breckenridge Burnside Chili Colusa Denver Disco Durham Elderville Fountain Green Joetta La Crosse McCall Middle Creek Old Niota Powellton Saint Mary Stillwell Sutter Tioga Webster

Forts Fort Johnson Fort Edwards

Townships Hancock County is divided into twenty-four townships:

Appanoose Augusta Bear Creek Carthage Chili Dallas City Durham Fountain Green Hancock Harmony La Harpe Montebello Nauvoo Pilot Grove Pontoosuc Prairie Rock Creek Rocky Run-Wilcox St. Albans St. Mary Sonora Walker Warsaw Wythe

Education The following is a list of all school districts with any territory in Hancock County, no matter how slight, even if the schools and/or administrative headquarters are in other counties. - Text list

K-12: Community Unit School District 4 Hamilton Community Consolidated School District 328 Nauvoo-Colusa Community Unit School District 325 - A K-12 district, but it has an arrangement with Warsaw district where Nauvoo-Colusa sends its high schoolers to Warsaw while Warsaw sends its junior high school students to Nauvoo-Colusa Southeastern Community Unit School District 337 Warsaw Community Unit School District 316 - A K-12 district, but it has an arrangement with Warsaw district where Warsaw sends its junior high school students to Nauvoo-Colusa while Nauvoo-Colusa sends its high schoolers to Warsaw West Prairie Community Unit School District 103

Secondary: Illini West High School District 307

Elementary: Carthage Elementary School District 317 Dallas Elementary School District 327 La Harpe Community School District 347

See also National Register of Historic Places listings in Hancock County, Illinois

References

External links Office site