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Dayton, Iowa
Location of Dayton, Iowa
Location of Dayton, Iowa
Country  United States
State  Iowa
County Webster
 • Total 0.85 sq mi (2.21 km2)
 • Land 0.85 sq mi (2.21 km2)
 • Water 0.00 sq mi (0.00 km2)
1,122 ft (342 m)
 • Total 772
 • Density 906.10/sq mi (349.80/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
Area code(s) 515
FIPS code 19-19180
GNIS feature ID 0455819
Dayton annual parade. Dayton, Iowa, 1970

Dayton is a city in Webster County, Iowa, United States. The population was 772 at the time of the 2020 census.


A post office called Dayton has been in operation since 1877. The city was named after Dayton, Ohio.


Dayton is located at 42°15′46″N 94°4′9″W / 42.26278°N 94.06917°W / 42.26278; -94.06917 (42.262672, -94.069136).

According to the United States Census Bureau, the city has a total area of 0.85 square miles (2.20 km2), all of it land.


Historical populations
Year Pop. ±%
1880 239 —    
1890 669 +179.9%
1900 753 +12.6%
1910 717 −4.8%
1920 836 +16.6%
1930 713 −14.7%
1940 732 +2.7%
1950 793 +8.3%
1960 820 +3.4%
1970 909 +10.9%
1980 941 +3.5%
1990 818 −13.1%
2000 884 +8.1%
2010 837 −5.3%
2020 772 −7.8%
Source: and Iowa Data Center
U.S. Decennial Census
The population of Dayton, Iowa from US census data

2010 census

As of the census of 2010, there were 837 people, 330 households, and 222 families living in the city. The population density was 984.7 inhabitants per square mile (380.2/km2). There were 376 housing units at an average density of 442.4 per square mile (170.8/km2). The racial makeup of the city was 98.7% White, 0.6% African American, 0.4% from other races, and 0.4% from two or more races. Hispanic or Latino of any race were 0.6% of the population.

There were 330 households, of which 33.6% had children under the age of 18 living with them, 51.8% were married couples living together, 9.1% had a female householder with no husband present, 6.4% had a male householder with no wife present, and 32.7% were non-families. 30.0% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.95.

The median age in the city was 42.2 years. 26% of residents were under the age of 18; 6.7% were between the ages of 18 and 24; 22.2% were from 25 to 44; 23.3% were from 45 to 64; and 21.9% were 65 years of age or older. The gender makeup of the city was 50.9% male and 49.1% female.

Annual events

Since 1937, Dayton has been the site of a rodeo on Labor Day weekend. It began with a pair of local cowboys and has grown to a National Championship Rodeo, sanctioned by the Professional Rodeo Cowboys Association. The rodeo features bareback riding, saddle bronc riding, bull riding, calf roping, team roping, steer wrestling, barrel racing, and the wild horse race. The rodeo has generated large crowds and high quality competitors. The rodeo features many types of domestic beers and American fare.


Dayton is a part of the Southeast Webster-Grand Community School District, established on July 1, 2005 by the merger of the Grand Community School District and the Southeast Webster Community School District. It was previously served by the Southeast Webster Community School District, which was formed on July 1, 1991 with the merger of the Central Webster Community School District and the Dayton Community School District.

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