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Plainfield, Iowa
Location of Plainfield, Iowa
Location of Plainfield, Iowa
Country  United States
State  Iowa
County Bremer
Area
 • Total 0.34 sq mi (0.87 km2)
 • Land 0.34 sq mi (0.87 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
942 ft (287 m)
Population
 (2020)
 • Total 393
 • Density 1,173.13/sq mi (452.97/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
50666
Area code(s) 319
FIPS code 19-63210
GNIS feature ID 0460200

Plainfield is a city in Bremer County, Iowa, United States. The population was 393 at the 2020 census, a decrease of 45, or 10.3%, from 438 in 2000. It is part of the WaterlooCedar Falls Metropolitan Statistical Area.

Geography

Plainfield is located at 42°50′41″N 92°32′5″W / 42.84472°N 92.53472°W / 42.84472; -92.53472 (42.844652, -92.534623).

According to the United States Census Bureau, the city has a total area of 0.33 square miles (0.85 km2), all of it land.

Demographics

Historical populations
Year Pop. ±%
1880 293 —    
1900 320 +9.2%
1910 288 −10.0%
1920 303 +5.2%
1930 293 −3.3%
1940 362 +23.5%
1950 387 +6.9%
1960 445 +15.0%
1970 446 +0.2%
1980 469 +5.2%
1990 455 −3.0%
2000 438 −3.7%
2010 436 −0.5%
2020 393 −9.9%
Source: and Iowa Data Center
Source:
U.S. Decennial Census

2010 census

As of the census of 2010, there were 436 people, 185 households, and 123 families residing in the city. The population density was 1,321.2 inhabitants per square mile (510.1/km2). There were 197 housing units at an average density of 597.0 per square mile (230.5/km2). The racial makeup of the city was 97.9% White, 0.5% African American, 0.2% Pacific Islander, 0.2% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 0.5% of the population.

There were 185 households, of which 30.3% had children under the age of 18 living with them, 55.7% were married couples living together, 8.1% had a female householder with no husband present, 2.7% had a male householder with no wife present, and 33.5% were non-families. 28.1% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.90.

The median age in the city was 37.8 years. 27.1% of residents were under the age of 18; 7.4% were between the ages of 18 and 24; 24.3% were from 25 to 44; 25.9% were from 45 to 64; and 15.4% were 65 years of age or older. The gender makeup of the city was 50.2% male and 49.8% female.

Education

Nashua-Plainfield Community School District operates area public schools. It was established on July 1, 1997 by the merger of the Nashua and Plainfield school districts. Plainfield houses the intermediate school, while the elementary school and Nashua-Plainfield Middle School/High School are in Nashua.

Notable people

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