Mercer County is a

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

located in the northwestern portion of the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...

. As of the 2020 census, the population was 3,538. making it the second-least populous county in Missouri. 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 st ...

Princeton Princeton University is a private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth as the College of New Jersey, Princeton is the fourth-oldest institution of higher education in the United States and one of the ni ...

. The county was organized February 14, 1845 and named for General John F. Mercer of the Revolutionary War.

History

Early years

Mercer County was organized February 14, 1845, from part of Grundy County. It is named in honor of General

Hugh Mercer Hugh Mercer (16 January 1726 – 12 January 1777) was a Scottish-born American military officer and physician who participated in the Seven Years' War and Revolutionary War. Born in Pitsligo, Scotland, he studied medicine in his home country ...

, who fought and died in the

American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...

. The first permanent settlements in what is now Mercer County were in 1837, when a few families from other parts of Missouri moved to the area. James Parsons, a

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...

native, is generally considered to be the first permanent settler, in the spring of 1837. The land was still included as part of Livingston County at that time and would remain so until 1841 when it would become part of the newly created Grundy County. Prior to 1837, the land was used by Native American tribes, primarily the Sac/Fox and

Potawatomi The Potawatomi , also spelled Pottawatomi and Pottawatomie (among many variations), are a Native American people of the western Great Lakes region, upper Mississippi River and Great Plains. They traditionally speak the Potawatomi language, a m ...

, as prime hunting grounds. The occasional temporary hunting village would be established by the tribes; otherwise, the land was devoid of humans. The town of Princeton, named for the battle where General Mercer was killed, was established as the county seat in 1847. The northern boundary of the county was in dispute for the first six years of its existence due to the Honey War, a bloodless territorial dispute between

and

Iowa Iowa () is a state in the 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: Wisconsin to the northeast, Illinois to the ...

. The boundary was 9.5 miles farther north than present day prior to an 1851 decision by the

U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...

Civil War

Mercer County, like its neighbor to the east Putnam County, was a staunch supporter of the Union. Most county residents had roots in northern U.S. states "back east" like

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...

, and

Indiana Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th s ...

, and did not have the strong slave-holding tradition of other northern Missouri counties like Macon, Audrain, and Monroe (commonly referred to as Little Dixie), whose population largely emigrated from Southern states. In the 1860 U.S. Census, only 12 Mercer County families were listed as slave owners, with a combined total of 24 slaves. Fewer than 20 Mercer County men fought for the Confederacy, while well over 1,000 volunteered for Union service. Among the units containing men from Mercer County were the 23rd, 27th and 35th Regiments, the 2nd and 12th Cavalry, the 5th Kansas Cavalry, and various smaller units of the Missouri State Militia. The 44th Missouri Infantry (USA), consisting of men from Mercer, Grundy, Sullivan, and other northwest Missouri counties, served a pivotal role in the Union victory at the Battle of Franklin, TN, on November 30, 1864.

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 (0.3%) is water.

Adjacent counties

Decatur County, Iowa Decatur County () is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 7,645. The county seat is Leon. This county is named for Stephen Decatur Jr., a hero in the War of 1812. History Decatur County was orga ...

(northwest) *

Wayne County, Iowa Wayne County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 6,497, making it the sixth-least populous county in Iowa. The county seat is Corydon. History Wayne County was formed in 1846 but was still ...

(north) * Putnam County (east) * Sullivan County (southeast) * Grundy County (south) * Harrison County (west)

Major highways

U.S. Route 65 U.S. Route 65 (US 65) is a north–south United States highway in the southern and midwestern United States. The southern terminus of the route is at U.S. Route 425 in Clayton, Louisiana. The northern terminus is at Interstate 35 just south of ...

U.S. Route 136 U.S. Route 136 is an east-west U.S. highway that is a spur route of U.S. Route 36. It runs from Edison, Nebraska, at U.S. Route 6 and U.S. Route 34 to the Interstate 74/Interstate 465 interchange in Speedway, Indiana. This is a distance of . U ...

Demographics

As of the

census A census is the procedure of systematically acquiring, recording and calculating information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses incl ...

of 2010, there were 3,785 people, 1,600 households, and 1,089 families residing in the county. The

population density Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopul ...

was 8 people per square mile (3/km²). There were 2,125 housing units at an average density of 5 per square mile (2/km²). The racial makeup of the county was 98.72%

White White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on ...

, 0.19%

Black Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have o ...

African American African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of ens ...

, 0.56% Native American, 0.05%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe the original p ...

, 0.03% from

other races Other often refers to: * Other (philosophy), a concept in psychology and philosophy Other or The Other may also refer to: Film and television * ''The Other'' (1913 film), a German silent film directed by Max Mack * ''The Other'' (1930 film), a ...

, and 0.45% from two or more races. Approximately 0.29% of the population were

Hispanic The term ''Hispanic'' ( es, hispano) refers to people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or Hispanidad. The term commonly applies to countries with a cultural and historical link to Spain and to Vic ...

Latino Latino or Latinos most often refers to: * Latino (demonym), a term used in the United States for people with cultural ties to Latin America * Hispanic and Latino Americans in the United States * The people or cultures of Latin America; ** Latin A ...

of any race. There were 1,600 households, out of which 28.30% had children under the age of 18 living with them, 57.60% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognized union between people called spouses. It establishes rights and obligations between them, as well as between them and their children, and between t ...

living together, 6.70% had a female householder with no husband present, and 31.90% were non-families. 29.30% of all households were made up of individuals, and 17.60% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.83. In the county, the population was spread out, with 23.00% under the age of 18, 6.70% from 18 to 24, 24.20% from 25 to 44, 24.00% from 45 to 64, and 22.00% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 95.70 males. For every 100 females age 18 and over, there were 92.60 males. The median income for a household in the county was $29,640, and the median income for a family was $35,313. Males had a median income of $26,690 versus $19,814 for females. The

per capita income Per capita income (PCI) or total income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. It is calculated by dividing the area's total income by its total population. Per capita i ...

for the county was $15,140. About 10.20% of families and 13.30% 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 t ...

, including 13.30% of those under age 18 and 14.50% of those age 65 or over.

2020 Census

Education

North Mercer County R-III School District
-

Mercer Mercer may refer to: Business * Mercer (car), a defunct American automobile manufacturer (1909–1925) * Mercer (consulting firm), a large human resources consulting firm headquartered in New York City * Mercer (occupation), a merchant or trader, ...

**North Mercer County Elementary School (PK-06) **Mercer High School (07-12)
Princeton R-V School District
-

**Princeton Elementary School (PK-06) **Princeton High School (07-12)

Public libraries

*Mercer County Library

Politics

Local

The Republican Party predominantly controls politics at the local level in Mercer County. Republicans hold all of the elected positions in the county. In the 2020 presidential election, Mercer County had the highest Republican turnout in the state of Missouri with greater than 86% of the population voting for Donald Trump.

State

All of Mercer County is a part of Missouri's 3rd District in the

Missouri House of Representatives The Missouri House of Representatives is the lower chamber of the Missouri General Assembly. It has 163 members, representing districts with an average size of 37,000 residents. House members are elected for two-year terms during general elections ...

and is represented b
Danny Busick
(R- Newtown). All of Mercer County is a part of Missouri's 12th District in the

Missouri Senate The Missouri Senate is the upper chamber of the Missouri General Assembly. It has 34 members, representing districts with an average population of 174,000. Its members serve four-year terms, with half the seats being up for election every two yea ...

and is currently represented b
Dan Hegeman
(R- Cosby).

Federal

All of Mercer County is included in

Missouri's 6th Congressional District Missouri's 6th congressional district takes in a large swath of land in northern Missouri, stretching across nearly the entire width of the state from Kansas to Illinois. Its largest voting population is centered in the northern portion of the ...

and is currently represented by

Sam Graves Samuel Bruce Graves Jr. (born November 7, 1963) is an American politician serving as the United States representative for , serving since 2001. He is a member of the Republican Party. The district stretches across most of the northern third of ...

(R- Tarkio) in the

U.S. House of Representatives The United States House of Representatives, often referred to as the House of Representatives, the U.S. House, or simply the House, is the lower chamber of the United States Congress, with the Senate being the upper chamber. Together they ...

Communities

Cities

(county seat)

Village

* South Lineville

Census-designated place

* Ravanna

Other communities

Mill Grove Mill Grove is a historic house and estate on Pawlings Road in Audubon, Pennsylvania. Built in the 1760s, it is notable as the first home in America of painter and naturalist John James Audubon (1785-1851), for whom the community is named. The ...

Modena Modena (, , ; egl, label=Emilian language#Dialects, Modenese, Mòdna ; ett, Mutna; la, Mutina) is a city and ''comune'' (municipality) on the south side of the Po Valley, in the Province of Modena in the Emilia-Romagna region of northern I ...

Historical communities

Source *Adel *Alvord *Burrows *Cleopatra *Dinsmore *Goshen *Half Rock *Ilia *Saline *Topsy (Newtown) *Wataga

Townships

SourceUSGenWeb Project, ''Mercer County, Missouri''
/ref> *Harrison *Lindley *Madison *Marion *Medicine *Morgan *Ravanna *Somerset *Washington

References

External links

Digitized 1930 Plat Book of Mercer County
from

University of Missouri The University of Missouri (Mizzou, MU, or Missouri) is a public university, public Land-grant university, land-grant research university in Columbia, Missouri. It is Missouri's largest university and the flagship of the four-campus Universit ...

Division of Special Collections, Archives, and Rare Books {{authority control 1845 establishments in Missouri Populated places established in 1845