Iowa County is a

county A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

in 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 so ...

Iowa Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...

. As of the 2020 census, the population was 16,662. The

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

is Marengo. Iowa County is one of seven counties in the United States to share the same name as the state in which they are located. The other six counties are Arkansas County, Hawaii County, Idaho County,

New York County Manhattan ( ) is the most densely populated and geographically smallest of the five boroughs of New York City. Coextensive with New York County, Manhattan is the smallest county by area in the U.S. state of New York. Located almost entire ...

Oklahoma County Oklahoma County is a county located in the central part of the U.S. state of Oklahoma. As of the 2020 census, the population was 796,292, making it the most populous county in Oklahoma. The county seat is Oklahoma City, the state capital and ...

, and

Utah County Utah County is the second-most populous county in the U.S. state of Utah. The county seat and largest city is Provo, which is the state's fourth-largest city, and the largest outside of Salt Lake County. As of the 2020 United States census ...

History

Iowa County was formed on February 17, 1843. It was named for the

Iowa River The Iowa River is a tributary of the Mississippi River in the state of Iowa in the United States. It is about longU.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed May 13, 2011 and i ...

, which flows through the county. The first courthouse was a log cabin built in 1847. It was rented by the county until 1850 when a second courthouse was completed. In 1861 construction of a third courthouse was begun. The current courthouse was built in 1892 after the county had outgrown the previous one. Iowa County is home to the

Amana Colonies The Amana Colonies are seven villages on located in Iowa County in east-central Iowa, United States: Amana (or Main Amana, German: ''Haupt-Amana''), East Amana, High Amana, Middle Amana, South Amana, West Amana, and Homestead. The villag ...

, a group of settlements of German Pietists comprising seven villages. Calling themselves the Ebenezer Society or the

Community of True Inspiration The Community of True Inspiration, also known as the True Inspiration Congregations, Inspirationalists, and the Amana Church Society) is a Radical Pietist group of Christians descending from settlers of German, Swiss, and Austrian descent who se ...

(German: die Gemeinde der wahren Inspiration), they first settled in

New York New York most commonly refers to: * New York (state), a state in the northeastern United States * New York City, the most populous city in the United States, located in the state of New York New York may also refer to: Places United Kingdom * ...

state near Buffalo in what is now

West Seneca West Seneca is a town in Erie County, New York, United States. The population was 45,500 at the 2020 census. West Seneca is a centrally located interior town of the county, and a suburb of Buffalo. West Seneca, Orchard Park and Hamburg form th ...

. However, in order to live out their beliefs in more isolated surroundings they moved west, to Iowa County in 1855, living a communal life until the mid-1930s. Today, Amana is a major tourist attraction known mainly for its restaurants and craft shops, and the colonies as a whole have been listed as a National Historic Landmark since 1965.

Geography

According to the

U.S. Census Bureau The United States Census Bureau, 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 U.S. Census Bureau is part of the U ...

, the county has a total area of , of which is land and (0.2%) is water. The county is intersected by the

and the north fork of the English River.

Major highways

Interstate 80 Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one of the ori ...

U.S. Highway 6 * US 151

U.S. Highway 151 * Elongated circle 21

Iowa Highway 21 Iowa Highway 21 (Iowa 21) is a state highway (Iowa), state highway that runs from north to south in central Iowa. It has a length of . Iowa 21 begins at Iowa 149 west of Hedrick, Iowa, Hedrick and ends at a freeway interchange wi ...

Iowa Highway 149 Iowa Highway 149 is a highway which runs from south to north in Iowa. It has a length of . Iowa 149 begins at U.S. Route 34 (Iowa), U.S. Highway 34 in Ottumwa, Iowa, Ottumwa and ends at Williamsburg, Iowa, Williamsburg at Interstate 80 in Iowa ...

Iowa Highway 220 * Elongated circle 212

Iowa Highway 212

Adjacent counties

* Benton County (north) * Linn County (northeast) * Johnson County (east) * Washington County (southeast) * Keokuk County (south) * Poweshiek County (west) * Tama County (northwest)

Demographics

2020 census

The 2020 census recorded a population of 16,662 in the county, with a population density of . 96.24% of the population reported being of one race. 90.48% were non-Hispanic White, 0.67% were Black, 2.97% were Hispanic, 0.21% were Native American, 0.56% were Asian, 0.01% were Native Hawaiian or Pacific Islander and 5.10% were some other race or more than one race. There were 7,341 housing units, of which 6,811 were occupied.

2010 census

The 2010 census recorded a population of 16,355 in the county, with a population density of . There were 7,258 housing units, of which 6,677 were occupied.

2000 census

As of the

census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...

of 2000, there were 15,671 people, 6,163 households, and 4,301 families residing in the county. The

population density Population density (in agriculture: Standing stock (disambiguation), 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 geog ...

was . There were 6,545 housing units at an average density of . The racial makeup of the county was 98.70%

White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

, 0.17%

Black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...

African American African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...

, 0.06% Native American, 0.30% Asian, 0.03%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, Pacificans, 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 th ...

, 0.36% from other races, and 0.38% from two or more races. 0.97% of the population were

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

or Latino of any race. There were 6,163 households, out of which 32.80% had children under the age of 18 living with them, 60.10% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...

living together, 6.60% had a female householder with no husband present, and 30.20% were non-families. 25.90% of all households were made up of individuals, and 12.50% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.03. In the county the population was spread out, with 26.40% under the age of 18, 6.30% from 18 to 24, 27.80% from 25 to 44, 22.40% from 45 to 64, and 17.10% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 95.00 males. For every 100 females age 18 and over, there were 93.20 males. The median income for a household in the county was $41,222, and the median income for a family was $48,946. Males had a median income of $31,220 versus $24,652 for females. The

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

for the county was $18,884. About 3.40% of families and 5.00% 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 4.50% of those under age 18 and 5.40% of those age 65 or over.

Politics

In the

2008 US presidential election Presidential elections were held in the United States on November 4, 2008. The Democratic ticket of Barack Obama, the junior senator from Illinois, and Joe Biden, the senior senator from Delaware, defeated the Republican ticket of John Mc ...

, a nearly equal number of Iowa County voters voted for each major candidate, with

Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...

winning the county by a narrow margin of 14 votes. In the

2012 US presidential election Presidential elections were held in the United States on November 6, 2012. Incumbent Democratic President Barack Obama and his running mate, incumbent Vice President Joe Biden, were elected to a second term. They defeated the Republican tick ...

Mitt Romney Willard Mitt Romney (born March 12, 1947) is an American businessman and retired politician. He served as a United States Senate, United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007 ...

received 4,551 votes (51.8%). In the

2016 US presidential election Presidential elections were held in the United States on November 8, 2016. The Republican ticket of businessman Donald Trump and Indiana governor Mike Pence defeated the Democratic ticket of former secretary of state Hillary Clinton and ...

Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...

received 5,193 votes (59.1%). In the 2020 US presidential election, Donald Trump received 6,009 votes (61.8%). In the 2024 US presidential election, Donald Trump received 6,068 votes (63.0%).

Communities

Cities

* Ladora * Marengo * Millersburg * North English * Parnell * Victor *

Williamsburg Williamsburg may refer to: Places *Colonial Williamsburg, a living-history museum and private foundation in Virginia *Williamsburg, Brooklyn, neighborhood in New York City *Williamsburg, former name of Kernville (former town), California *Williams ...

Census-designated places

* Amana *

Conroy Conroy is an Irish surname. Overview Conroy is an Irish surname of multiple origins. In some cases it is the form used by descendants of the Ó Maolconaire, Ó Maolchonaire bardic family of what is now East Galway and South Roscommon. In west Coun ...

* East Amana * High Amana * Homestead * Middle Amana * South Amana * West Amana

Other unincorporated communities

*Genoa Bluff *Koszta

Townships

* English * Greene *

Hartford Hartford is the List of capitals in the United States, capital city of the U.S. state of Connecticut. The city, located in Hartford County, Connecticut, Hartford County, had a population of 121,054 as of the 2020 United States census, 2020 ce ...

* Hilton *

* Lincoln * Marengo *

Pilot An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its Aircraft flight control system, directional flight controls. Some other aircrew, aircrew members, such as navigators or flight engineers, are al ...

Sumner Sumner may refer to: Places Antarctica * Mount Sumner, a mountain in the Rare Range, Antarctica * Sumner Glacier, southern Graham Land, Antarctica Australia * Sumner, Queensland, a suburb of Brisbane New Zealand * Sumner, New Zealand, a seasi ...

Troy Troy (/; ; ) or Ilion (; ) was an ancient city located in present-day Hisarlik, Turkey. It is best known as the setting for the Greek mythology, Greek myth of the Trojan War. The archaeological site is open to the public as a tourist destina ...

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

York York is a cathedral city in North Yorkshire, England, with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss. It has many historic buildings and other structures, such as a Yor ...

*New Liberty

Population ranking

Population rankings based on the 2020 census of Iowa County: † ''county seat''

Education

These public school districts are in Iowa County: * Belle Plaine Community School District, Belle Plaine * Benton Community School District, Van Horne * Clear Creek–Amana Community School District, Oxford * English Valleys Community School District, North English * H-L-V Community School District, Victor * Iowa Valley Community School District, Marengo * Williamsburg Community School District, Williamsburg

References

External links

Iowa County's websiteIowa County Genealogy Iowa GenWeb website
{{authority control 1843 establishments in Iowa Territory Populated places established in 1843