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Janesville, Iowa
Downtown Janesville
Downtown Janesville
Oldest City in Bremer County
Location of Janesville, Iowa
Location of Janesville, Iowa
Country  United States
State  Iowa
Counties Bremer, Black Hawk
 • Type City Council
 • Total 1.47 sq mi (3.81 km2)
 • Land 1.41 sq mi (3.66 km2)
 • Water 0.06 sq mi (0.15 km2)
906 ft (276 m)
 • Total 1,034
 • Density 731.26/sq mi (282.39/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
Area code(s) 319
FIPS code 19-39405
GNIS feature ID 0457912

Janesville is a city in Black Hawk and Bremer counties in the U.S. state of Iowa. The population was 1034 at the 2020 census. It is part of the WaterlooCedar Falls Metropolitan Statistical Area.


Janesville was founded in 1849 by John T. Barrick, a Quaker and abolitionist who had relocated to Iowa from Ohio. According to the book, "The Janesvillians, Volumes I and II" by Maxine Leonard, John T. Barrick built the first mill and frame house in the area. He platted the town of Janesville, which he named in honor of his wife, Jane McPherson Barrick.

It has been established that a tunnel once existed under the business district of Janesville. The tunnel ran between basements and below buildings on both sides of Janesville's Main Street, crossing below the street in the center of town and continuing westward to the Cedar River. One branch of the tunnel continued northward, connecting to the site of Fort John, a shelter built to protect settlers during the Ho-Chunk uprising in June, 1854. The tunnel terminated in the basement of the home of Abel Crail, who later served in Union Army in the American Civil War, and was the first Commander of Janesville Post No. 172, Grand Army of the Republic. According to local legend, the Barricks and other townsfolk sympathetic to their cause aided in the escape of runaway slaves as part of the Underground Railroad. Slaves were moved through Janesville from Grinnell, Iowa and continued to Decorah, Iowa and into Southeastern Minnesota. The tunnel has since been filled in and no longer exists.

Janesville was a farming community with a population of 311 in 1900, according to the Iowa Data Center [1]. The town's population increased to just 445 by 1950. Due to its proximity to Waterloo-Cedar Falls, the population of Janesville increased to 840 by 1980, when the town was referred to as a "bedroom community". During the farm crisis and economic recession that hit Northeast Iowa in the 1980s, Janesville's population declined slightly. Since the mid-1990s, with the completion of the four lane bypass U.S. Highway 218 / Iowa Highway 27, known as the "Avenue of the Saints", [2] Janesville's population is again increasing. New residential subdivisions continue to develop within the city of Janesville and the surrounding area. [3]


Janesville is located at 42°38′46″N 92°27′46″W / 42.64611°N 92.46278°W / 42.64611; -92.46278 (42.646008, -92.462663). The city is located on the county line between Bremer and Black Hawk Counties, and is bisected by the Cedar River.

According to the United States Census Bureau, the city has a total area of 1.49 square miles (3.86 km2), of which, 1.44 square miles (3.73 km2) is land and 0.05 square miles (0.13 km2) is water.


Historical populations
Year Pop. ±%
1880 273 —    
1900 311 +13.9%
1910 269 −13.5%
1920 261 −3.0%
1930 331 +26.8%
1940 366 +10.6%
1950 445 +21.6%
1960 648 +45.6%
1970 741 +14.4%
1980 840 +13.4%
1990 822 −2.1%
2000 829 +0.9%
2010 930 +12.2%
2020 1,034 +11.2%
Source: and Iowa Data Center
U.S. Decennial Census

2010 census

As of the census of 2010, there were 930 people, 398 households, and 262 families residing in the city. The population density was 645.8 inhabitants per square mile (249.3/km2). There were 409 housing units at an average density of 284.0 per square mile (109.7/km2). The racial makeup of the city was 98.4% White, 0.6% African American, 0.2% Asian, and 0.8% from two or more races. Hispanic or Latino of any race were 0.3% of the population.

There were 398 households, of which 29.1% had children under the age of 18 living with them, 56.8% were married couples living together, 6.3% had a female householder with no husband present, 2.8% had a male householder with no wife present, and 34.2% were non-families. 28.1% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.90.

The median age in the city was 40.2 years. 24.2% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 25.5% were from 25 to 44; 25.3% were from 45 to 64; and 18.5% were 65 years of age or older. The gender makeup of the city was 49.6% male and 50.4% female.

Arts and culture

Janesville Public Library

The Janesville Public Library was created in 1962 with the inspiration of Clark Corwin with help from Hattie Zo Shoesmith and Margaret Theis. The library started as an all volunteer and all donated materials library in a room located in the city hall. Arlene Warm volunteered her services as a librarian. In the late 1960s, the city council authorized a 200 dollar a year grant for the library. In 1973, the library received a $10,000 grant from the Kinney Lindstrom Foundation that had to be matched by the local public. These funds allowed the library to expand into a new area. As of 2011 the library has approximately 10,000 books, 55 magazine and newspaper subscriptions, 1,200 videos, 85 audio tapes, 6 computers for patron access, and offers audio book downloads. The library has an average of 1,000 patrons each month.

Riviera Ballroom

Author Deb (Mather) Renner wrote a book, released December 15, 2010 and published by The Printery in Waverly, about the Riviera Ballroom that was torn down and replaced with the Riviera Roose center. Madge and Heine Kurtz opened the ballroom in 1951 and it closed in the late 1980s. Renner was a graduate of Janesville high school in 1982.


Janesville and the surrounding area, including the unincorporated town of Finchford, are served by the Janesville Consolidated School District. The public school district serves approximately 335 students, pre-Kindergarten through 12th Grade. Extensive renovations and an addition to the Janesville schools were completed in early 2008, funded by operating surpluses.

Students at Janesville High School can choose to take advanced courses at nearby Waverly-Shell Rock High School in Waverly, the University of Northern Iowa in Cedar Falls, and Hawkeye Community College in Waterloo. Wartburg College is located in nearby Waverly.

Notable people

  • Bill Dix, Republican, former member of Iowa Legislature, Janesville High School Class of 1981
  • Albert J. Loveland, Democrat, former U.S. Under-Secretary of Agriculture and candidate for U.S. Senate, 1950

See also

Kids robot.svg In Spanish: Janesville (Iowa) para niños

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