Mercer County is a

county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

Illinois Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Rock ...

. According to the 2010 census, it had a population of 16,434. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US ...

Aledo Aledo may refer to: *Aledo, Illinois *Aledo, Texas *Aledo, Spain Aledo is a municipality in the Region of Murcia, southern Spain. It is home to a castle built during the early Middle Ages by the Moors, to command the Guadalentín valley. Whe ...

. Mercer County is included in the

Davenport Davenport may refer to: Places Australia *Davenport, Northern Territory, a locality *Hundred of Davenport, cadastral unit in South Australia **Davenport, South Australia, suburb of Port Augusta ** District Council of Davenport, former local govern ...

- Moline- Rock Island, IA-IL

Metropolitan Statistical Area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally incorporated as a city or tow ...

History

Mercer County is named for Hugh Mercer (1726–1777), a physician and general during the

American Revolution The American Revolution was an ideological and political revolution that occurred in British America between 1765 and 1791. The Americans in the Thirteen Colonies formed independent states that defeated the British in the American Revoluti ...

who died from wounds suffered at the

Battle of Princeton The Battle of Princeton was a battle of the American Revolutionary War, fought near Princeton, New Jersey on January 3, 1777, and ending in a small victory for the Colonials. General Lord Cornwallis had left 1,400 British troops under the comman ...

. In May 1812, Congress passed an act which set aside lands in

Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the O ...

Michigan Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and t ...

, and Illinois as payment to volunteer soldiers in the

War of 1812 The War of 1812 (18 June 1812 – 17 February 1815) was fought by the United States of America and its indigenous allies against the United Kingdom and its allies in British North America, with limited participation by Spain in Florida. It be ...

. Mercer County was part of this "Military Tract." Seven years after Illinois became a state, Mercer County was founded. It was formed from unorganized territory near Pike County on January 13, 1825. Although the county had been created, its government was not organized for several years; for administration purposes it was attached first to Schuyler County (until 1826), then to Peoria (until 1831), and finally to Warren County. The organization of the county government was finally completed in 1835, after a large influx of settlers following the

Black Hawk War The Black Hawk War was a conflict between the United States and Native Americans led by Black Hawk, a Sauk leader. The war erupted after Black Hawk and a group of Sauks, Meskwakis (Fox), and Kickapoos, known as the "British Band", cross ...

.Mercer County Fact Sheet, Illinois State Archives. File:Mercer_County_Illinois_1825.png, Mercer County at the time of its creation in 1825 File:Mercer County Illinois 1827.png, Mercer County in 1827, reduced to its present borders

Geography

According to the

U.S. Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...

, the county has a total area of , of which is land and (1.3%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Aledo 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 July 1936. Average monthly precipitation ranged from in January to in June.

Major highways

* U.S. Highway 67 * Illinois Route 17 *

Illinois Route 94 Illinois Route 94 is a north–south state highway in western Illinois. It runs from U.S. Route 24 (US 24) just east of Camp Point to U.S. Route 67 just south of Oak Grove, just south of the Quad Cities area. This is a distance of . ...

* Illinois Route 135

Adjacent counties

* Rock Island County - north * Henry County - east * Knox County - southeast * Henderson County - south * Warren County - south *

Des Moines County Des Moines County is located in the U.S. state of Iowa. As of the 2020 census, the population was 38,910. The county seat and largest city is Burlington. It is one of Iowa's two original counties along with Dubuque County; both were organiz ...

Iowa Iowa () is a U.S. state, state in the Midwestern United States, Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six states: Wiscon ...

- southwest * Louisa County,

- west

Demographics

As of the

2010 United States Census The United States census of 2010 was the twenty-third United States national census. National Census Day, the reference day used for the census, was April 1, 2010. The census was taken via mail-in citizen self-reporting, with enumerators serving ...

, there were 16,434 people, 6,734 households, and 4,724 families residing in the county. The population density was . There were 7,358 housing units at an average density of . The racial makeup of the county was 98.3% white, 0.3% black or African American, 0.3% Asian, 0.1% American Indian, 0.3% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 1.9% of the population. In terms of ancestry, 25.9% were

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...

, 18.2% were Irish, 11.3% were

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...

, 9.4% were Swedish, and 7.4% were

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

. Of the 6,734 households, 30.1% had children under the age of 18 living with them, 58.3% were married couples living together, 7.9% had a female householder with no husband present, 29.8% were non-families, and 25.8% of all households were made up of individuals. The average household size was 2.41 and the average family size was 2.88. The median age was 43.7 years. The median income for a household in the county was $50,909 and the median income for a family was $62,025. Males had a median income of $46,136 versus $30,392 for females. The per capita income for the county was $25,332. About 8.2% of families and 9.3% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 14.9% of those under age 18 and 7.2% of those age 65 or over.

Communities

Cities

* Keithsburg * New Boston

Villages

* Alexis * Joy * Matherville * North Henderson * Reynolds (Part in Rock Island County) * Seaton * Sherrard *

Viola ; german: Bratsche , alt=Viola shown from the front and the side , image=Bratsche.jpg , caption= , background=string , hornbostel_sachs=321.322-71 , hornbostel_sachs_desc=Composite chordophone sounded by a bow , range= , related= *Violin family ...

* Windsor

Unincorporated communities

* Boden * Burgess * Cable * Eliza * Gilchrist *

Hamlet ''The Tragedy of Hamlet, Prince of Denmark'', often shortened to ''Hamlet'' (), is a tragedy written by William Shakespeare sometime between 1599 and 1601. It is Shakespeare's longest play, with 29,551 words. Set in Denmark, the play depicts ...

* Mannon * Marston * Millersburg *

Petersville Petersville Australia Limited was an Australian food producer. History Petersville was founded in 1961 when Edgell and Peters Ice Cream merged. In May 1981, H.C. Sleigh Co. launched a successful takeover offer and rebranded the company Peter ...

* Preemption * Shale City * Sunbeam * Swedona * Wanlock

Townships

Mercer County is divided into fifteen townships: * Abington *

Duncan Duncan may refer to: People * Duncan (given name), various people * Duncan (surname), various people * Clan Duncan * Justice Duncan (disambiguation) Places * Duncan Creek (disambiguation) * Duncan River (disambiguation) * Duncan Lake ...

* Eliza * Greene * Keithsburg * Mercer * Millersburg * New Boston * North Henderson * Ohio Grove * Perryton * Preemption * Richland Grove * Rivoli * Suez

Politics

Historically, Mercer County was a solidly Republican Yankee-influenced county, and before the Republican Party existed a stronghold of the Whig Party. The county never voted for a Democratic presidential candidate until

Lyndon Johnson Lyndon Baines Johnson (; August 27, 1908January 22, 1973), often referred to by his initials LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969. He had previously served as the 37th vice ...

’s 1964 landslide over

Barry Goldwater Barry Morris Goldwater (January 2, 1909 – May 29, 1998) was an American politician and United States Air Force officer who was a five-term U.S. Senator from Arizona (1953–1965, 1969–1987) and the Republican Party nominee for president ...

– the solitary break in Whig and Republican dominance occurring in 1912 when the GOP was mortally split and Progressive

Theodore Roosevelt Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26t ...

carried the county over conservative incumbent President

William Howard Taft William Howard Taft (September 15, 1857March 8, 1930) was the 27th president of the United States (1909–1913) and the tenth chief justice of the United States (1921–1930), the only person to have held both offices. Taft was elected pr ...

. After Johnson’s victory in the county, Mercer voted to being Republican between 1968 and 1984, but

Reagan Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician, actor, and union leader who served as the 40th president of the United States from 1981 to 1989. He also served as the 33rd governor of California from 1967 ...

’s landslide in that election saw a swing to the Democrats that was capitalized upon by

Michael Dukakis Michael Stanley Dukakis (; born November 3, 1933) is an American retired lawyer and politician who served as governor of Massachusetts from 1975 to 1979 and again from 1983 to 1991. He is the longest-serving governor in Massachusetts history ...

to carry the county in 1988. Between then and 2012, Mercer was solidly Democratic, but concern over declining economic opportunities in the “

Rust Belt The Rust Belt is a region of the United States that experienced industrial decline starting in the 1950s. The U.S. manufacturing sector as a percentage of the U.S. GDP peaked in 1953 and has been in decline since, impacting certain regions an ...

” caused a dramatic swing to populist Republican

Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of P ...

in 2016. Trump’s performance was the best by a Republican since Richard Nixon's 3,000-plus-county landslide in 1972. Mercer County is located in

Illinois's 17th Congressional District The 17th congressional district of Illinois is represented by Democrat Cheri Bustos. It includes most of the northwestern portion of the state, with most of its population living on the Illinois side of the Quad Cities, as well as parts of Peor ...

and is currently represented by Democrat Cheri Bustos. Within the

Illinois House of Representatives The Illinois House of Representatives is the lower house of the Illinois General Assembly. The body was created by the first Illinois Constitution adopted in 1818. The House under the current constitution as amended in 1980 consists of 118 re ...

, the county is located in the 74th district and is currently represented by Republican Daniel Swanson. The county is located in the 37th district of the

Illinois Senate The Illinois Senate is the upper chamber of the Illinois General Assembly, the legislative branch of the government of the State of Illinois in the United States. The body was created by the first state constitution adopted in 1818. Under the ...

, and is currently represented by Republican Chuck Weaver.

Footnotes

External links

*

{{Coord, 41.20, -90.74, display=title, type:adm2nd_region:US-IL_source:UScensus1990 Illinois counties 1825 establishments in Illinois Illinois counties on the Mississippi River Populated places established in 1825 Quad Cities