ZIP Code 52301
About Marengo
Marengo is a city in and the county seat of Iowa County, Iowa, United States. It has served as the county seat since August 1845, even though it was not incorporated until July 1859. The population was 2,435 in the 2020 census, a decline from 2,535 in 2000.
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Area Profile
US Census (ACS 5-year · Gazetteer)
4,046
population
$68,659
median household income
32
people / sq mi
$149,200
median home value
$752
median gross rent
42.7
median age
1,850
housing units
1,697
households
126.3
land area (sq mi)