Iowa County | |
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Coordinates: 41°41′10″N92°04′01″W / 41.686111111111°N 92.066944444444°W | |
Country | United States |
State | Iowa |
Founded | 1843 |
Named for | Iowa River |
Seat | Marengo |
Largest city | Williamsburg |
Area | |
• Total | 587 sq mi (1,520 km2) |
• Land | 586 sq mi (1,520 km2) |
• Water | 1.0 sq mi (3 km2) 0.2% |
Population (2020) | |
• Total | 16,662 |
• Density | 28/sq mi (11/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 1st |
Website | iowacounty |
Iowa County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 16,662. [1] The county seat is Marengo. [2]
Iowa County is one of seven counties in the United States to share the same name as the state they are located in. The other six counties are Arkansas County, Hawaii County, Idaho County, New York County, Oklahoma County, and Utah County. [3]
Iowa County was formed on February 17, 1843. It was named for the Iowa River, which flows through the county. [4]
The first courthouse was a log cabin built in 1847. This 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. [5]
Iowa County is home to the Amana Colonies, a group of settlements of German Pietists, comprising seven villages. Calling themselves the Ebenezer Society or the Community of True Inspiration (German: die Gemeinde der wahren Inspiration), they first settled in New York state near Buffalo in what is now West Seneca. 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.
According to the U.S. Census Bureau, the county has a total area of 587 square miles (1,520 km2), of which 586 square miles (1,520 km2) is land and 1.0 square mile (2.6 km2) (0.2%) is water. [6]
The county is intersected by the Iowa River and the north fork of the English River. [7]
Census | Pop. | Note | %± |
---|---|---|---|
1850 | 822 | — | |
1860 | 8,029 | 876.8% | |
1870 | 16,644 | 107.3% | |
1880 | 19,221 | 15.5% | |
1890 | 18,270 | −4.9% | |
1900 | 19,544 | 7.0% | |
1910 | 18,409 | −5.8% | |
1920 | 18,600 | 1.0% | |
1930 | 17,332 | −6.8% | |
1940 | 17,016 | −1.8% | |
1950 | 15,835 | −6.9% | |
1960 | 16,396 | 3.5% | |
1970 | 15,419 | −6.0% | |
1980 | 15,429 | 0.1% | |
1990 | 14,630 | −5.2% | |
2000 | 15,671 | 7.1% | |
2010 | 16,355 | 4.4% | |
2020 | 16,662 | 1.9% | |
2023 (est.) | 16,381 | [8] | −1.7% |
U.S. Decennial Census [9] 1790-1960 [10] 1900-1990 [11] 1990-2000 [12] 2010-2018 [13] |
The 2020 census recorded a population of 16,662 in the county, with a population density of 28.3911/sq mi (10.9619/km2). 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. [1]
The 2010 census recorded a population of 16,355 in the county, with a population density of 27.8881/sq mi (10.7677/km2). There were 7,258 housing units, of which 6,677 were occupied. [14]
As of the census [15] of 2000, there were 15,671 people, 6,163 households, and 4,301 families residing in the county. The population density was 27 people per square mile (10 people/km2). There were 6,545 housing units at an average density of 11 units per square mile (4.2 units/km2). The racial makeup of the county was 98.70% White, 0.17% Black or African American, 0.06% Native American, 0.30% Asian, 0.03% Pacific Islander, 0.36% from other races, and 0.38% from two or more races. 0.97% of the population were Hispanic 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 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 for the county was $18,884. About 3.40% of families and 5.00% of the population were below the poverty line, including 4.50% of those under age 18 and 5.40% of those age 65 or over.
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In the 2008 US presidential election, a nearly equal number of Iowa County voters voted for each major candidate. [16]
In the 2012 US presidential election, Mitt Romney received 4,551 votes (51.8%). [17]
In the 2016 US presidential election, Donald Trump received 5,193 votes (59.1%). [18]
In the 2020 US presidential election, Donald Trump received 6,009 votes (61.8%). [19]
Year | Republican | Democratic | Third party(ies) | |||
---|---|---|---|---|---|---|
No. | % | No. | % | No. | % | |
2024 | 6,068 | 62.95% | 3,400 | 35.27% | 171 | 1.77% |
2020 | 6,009 | 61.68% | 3,547 | 36.41% | 186 | 1.91% |
2016 | 5,205 | 58.46% | 3,084 | 34.64% | 615 | 6.91% |
2012 | 4,569 | 51.53% | 4,144 | 46.74% | 153 | 1.73% |
2008 | 4,188 | 48.99% | 4,202 | 49.16% | 158 | 1.85% |
2004 | 4,544 | 53.75% | 3,841 | 45.43% | 69 | 0.82% |
2000 | 3,894 | 52.53% | 3,230 | 43.57% | 289 | 3.90% |
1996 | 3,042 | 43.24% | 3,354 | 47.68% | 639 | 9.08% |
1992 | 2,656 | 38.13% | 2,560 | 36.76% | 1,749 | 25.11% |
1988 | 3,247 | 48.57% | 3,338 | 49.93% | 100 | 1.50% |
1984 | 4,352 | 60.02% | 2,815 | 38.82% | 84 | 1.16% |
1980 | 4,153 | 55.21% | 2,606 | 34.65% | 763 | 10.14% |
1976 | 3,926 | 52.98% | 3,367 | 45.43% | 118 | 1.59% |
1972 | 4,202 | 60.34% | 2,578 | 37.02% | 184 | 2.64% |
1968 | 4,133 | 58.12% | 2,586 | 36.37% | 392 | 5.51% |
1964 | 2,828 | 39.82% | 4,261 | 60.00% | 13 | 0.18% |
1960 | 4,944 | 63.47% | 2,828 | 36.30% | 18 | 0.23% |
1956 | 4,875 | 62.68% | 2,753 | 35.40% | 149 | 1.92% |
1952 | 5,625 | 67.27% | 2,514 | 30.06% | 223 | 2.67% |
1948 | 3,659 | 52.44% | 3,030 | 43.42% | 289 | 4.14% |
1944 | 3,959 | 53.94% | 3,119 | 42.49% | 262 | 3.57% |
1940 | 4,696 | 55.33% | 3,649 | 42.99% | 143 | 1.68% |
1936 | 3,360 | 43.57% | 4,163 | 53.98% | 189 | 2.45% |
1932 | 2,628 | 35.04% | 4,376 | 58.35% | 495 | 6.60% |
1928 | 4,091 | 56.85% | 3,075 | 42.73% | 30 | 0.42% |
1924 | 3,549 | 51.91% | 1,458 | 21.33% | 1,830 | 26.77% |
1920 | 4,892 | 69.92% | 2,019 | 28.86% | 86 | 1.23% |
1916 | 2,484 | 57.90% | 1,763 | 41.10% | 43 | 1.00% |
1912 | 1,237 | 30.76% | 1,841 | 45.77% | 944 | 23.47% |
1908 | 2,230 | 52.58% | 1,907 | 44.97% | 104 | 2.45% |
1904 | 2,303 | 52.81% | 1,891 | 43.36% | 167 | 3.83% |
1900 | 2,336 | 52.70% | 1,983 | 44.73% | 114 | 2.57% |
1896 | 2,391 | 53.78% | 1,956 | 43.99% | 99 | 2.23% |
The population ranking of the following table is based on the 2020 census of Iowa County. [1]
†county seat
Rank | City/Town/etc. | Municipal type | Population (2020 Census) |
---|---|---|---|
1 | Williamsburg | City | 3,346 |
2 | † Marengo | City | 2,435 |
3 | North English (partially in Keokuk County ) | City | 1,065 |
4 | Victor (partially in Poweshiek County ) | City | 875 |
5 | Middle Amana | CDP | 543 |
6 | Amana | CDP | 388 |
7 | Conroy | CDP | 252 |
8 | Ladora | City | 229 |
9 | Parnell | City | 194 |
10 | South Amana | CDP | 165 |
11 | West Amana | CDP | 140 |
t-12 | Millersburg | City | 135 |
t-12 | Homestead | CDP | 135 |
13 | High Amana | CDP | 113 |
14 | East Amana | CDP | 64 |
The following public school districts have areas in Iowa County:
Clay County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 16,384. Its county seat is Spencer. Its name is in honor of Henry Clay Jr., a colonel who died in action in the Mexican–American War, and son of Henry Clay, famous American statesman from Kentucky. Clay County comprises the Spencer, IA Micropolitan Statistical Area. Clay County holds the annual Clay County Fair. The first newspaper in Clay County was the Peterson Patriot which started publication in 1880.
Poweshiek County is a county in the southeastern part of the U.S. state of Iowa. As of the 2020 census, the population was 18,662. The county seat is Montezuma. The county is named for the chief of the Fox tribe who signed the treaty ending the Black Hawk War. It lies along Interstate 80 between Des Moines and Iowa City. Poweshiek County's largest city is Grinnell.
Marengo County is a county located in the west central portion of the U.S. state of Alabama. As of the 2020 census, the population was 19,323. The largest city is Demopolis, and the county seat is Linden. It is named in honor of the Battle of Marengo near Turin, Italy, where French leader Napoleon Bonaparte defeated the Austrians on June 14, 1800.
Houston County is a county in the U.S. state of Minnesota. At the 2020 census, the population was 18,843. Its county seat is Caledonia. Houston County is included in the La Crosse–Onalaska metropolitan statistical area.
Sioux County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 35,872. Its county seat is Orange City. Its largest city is Sioux Center.
Scott County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 174,669, making it the third-most populous county in Iowa. The county seat is Davenport.
Pottawattamie County is a county located in the U.S. state of Iowa. At the 2020 census, the population was 93,667, making it the tenth-most populous county in Iowa. The county takes its name from the Potawatomi Native American tribe. The county seat is Council Bluffs.
Polk County is located in the U.S. state of Iowa. As of the 2020 census, the population was 492,401. It is Iowa's most populous county, and home to over 15% of the state's residents. The county seat is Des Moines, which is also the capital city of Iowa. Polk County is included in the Des Moines–West Des Moines, IA Metropolitan Statistical Area.
Monroe County is a county located in the south central part of the U.S. state of Iowa. In the early 20th century, it was a center of bituminous coal mining and in 1910 had a population of more than 25,000. As mining declined, people moved elsewhere for work. In the 2020 census, the population was 7,577. The county seat is Albia. The county, originally called Kishkekosh County after a famous chief of the Meskwaki, was renamed for James Monroe, fifth President of the United States.
Louisa County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 10,837. The county seat is Wapello.
Kossuth County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 14,828. The county seat is Algona.
Ida County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 7,005, making it the state's eighth-least populous county. The county seat is Ida Grove. The county was authorized by the Iowa Legislature in January 1851 as a packet of projected counties in unorganized territory of western Iowa. It was named after Ida Smith, the first child of European immigrants to be born in this region.
Henry County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,482. The county seat is Mount Pleasant. The county was named for General Henry Dodge, governor of Wisconsin Territory.
Hardin County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 16,878. The county seat is Eldora. The county was named in honor of Col. John J. Hardin, of Illinois, who was killed in the Mexican–American War.
Hancock County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 10,795. The county seat is Garner. The county was founded on January 15, 1851, and named in honor of John Hancock, a leader of the Continental Congress during the American Revolution.
Greene County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 8,771. The county seat is Jefferson. The county is named in honor of General Nathanael Greene.
Fremont County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 6,605, making it the state's seventh-least populous county. The county seat is Sidney. The county was formed in 1847 and named for the military officer John C. Frémont.
Benton County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 25,575. Its county seat and largest city is Vinton. The county is named for Thomas Hart Benton, a U.S. Senator from Missouri.
Middle Amana is an unincorporated community and census-designated place (CDP) in Iowa County, Iowa, United States. It is the largest of the seven villages of the Amana Colonies, all designated as a National Historic Landmark. As of the 2020 Census, the population of Middle Amana was 543.
South Amana is an unincorporated community and census-designated place (CDP) in northern Iowa County, Iowa, United States, and is part of the "seven villages" of the Amana Colonies. As of the 2020 census, it had a population of 165.