ZIP Code 50666
About Plainfield
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 Waterloo–Cedar Falls Metropolitan Statistical Area. The Plainfield post office was established in 1868.
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Area Profile
US Census (ACS 5-year · Gazetteer)
768
population
$76,380
median household income
16
people / sq mi
$168,200
median home value
$682
median gross rent
51.8
median age
377
housing units
327
households
49.4
land area (sq mi)