Iowa

Across Iowa, GIS Map currently maps 44 cities and towns that together hold around 1,662,874 residents. The Hawkeye State is the heart of American agriculture and Midwestern culture. The most populous community is Des Moines, with about 212,421 residents in Polk County, and it has an interactive street, satellite and topographic map. Cedar Rapids (137,264) and Davenport (100,913) follow. The state capital, Des Moines, sits in Polk County.

County-level coverage in Iowa includes 99 official Census boundaries, each paired with local demographics. Polk County is the most populous, with about 503,175 residents. The highest median household income belongs to Dallas County at $102,379. By land area, Kossuth County is the largest at roughly 973 square miles. The youngest population, with a median age of 26.9, is found in Story County. Among mapped cities with at least 10,000 residents, Clive reports the highest median household income at $132,121. All figures come from the U.S. Census Bureau's American Community Survey 2020-2024 five-year estimates.

Elevation varies considerably across Iowa. Storm Lake is the highest at about 1,421 feet above sea level, while Fort Madison is the lowest at about 527 feet. Every mapped city observes Central Time. According to the USDA U.S. General Soil Map, Mollisols are the dominant soil order beneath 32 of the mapped city centers. Federal records list 6 government-owned and 63 leased properties in these cities, the most in Cedar Rapids. City maps let you switch on FEMA flood zones, USGS contours and land cover layers.

We also map 86 ZIP code areas in Iowa, each with its boundary and demographics. The most populated one has about 46,306 residents. The runner-up counts roughly 43,867 people. The densest packs about 6,600 people per square mile. Every page includes drawing and measuring tools plus a click-anywhere inspector that reports the county, ZIP, census tract, school district, flood zone and elevation of any point.