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IA · Hawkeye State · Midwest · admitted 1846 (#29)

Iowa map

Iowa highlighted on the US map, with Des Moines as both capital and largest city. It is the only state bounded by navigable rivers on both its east and west sides.

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Capital
Des Moines
Largest city
Des Moines
Population (2020)
3,190,369
Area
56,273 sq mi
Counties
99
Time zone
Central
Region
Midwest · West North Central
Statehood
December 28, 1846

Where Iowa is

Iowa is in the heart of the Midwest between the Mississippi and Missouri rivers. It is about 310 miles east to west and 200 miles north to south. Minnesota lies to the north, Wisconsin and Illinois to the east across the Mississippi, Missouri to the south, and Nebraska and South Dakota to the west across the Missouri and Big Sioux rivers. Des Moines is in the south-central part of the state where the Raccoon River joins the Des Moines River. Nearly all of Iowa is gently rolling glacial plain; about 85 percent of the land is farmed.

Major cities

CityRegion of statePopulation (2020)
Des Moines (capital)Central Iowa214,133
Cedar RapidsEastern Iowa137,710
DavenportQuad Cities (Mississippi River)101,724
Sioux CityNorthwest (Missouri River)85,797
Iowa CityEastern Iowa74,828
West Des MoinesDes Moines metro68,723
WaterlooNortheast Iowa67,314
AmesCentral Iowa66,427

Geography

Borders

Iowa's eastern and western borders are rivers for their entire length: the Mississippi on the east and the Missouri and Big Sioux on the west. Where the Missouri has shifted channel since 1846, old bends leave small pieces of Iowa on the Nebraska side, including Carter Lake. The two straight borders are surveys — the Minnesota line at 43°30′N and the Missouri line, whose exact position was argued in the 1839 "Honey War" and settled by the Supreme Court in 1849.

Regions of Iowa

Central Iowa (Des Moines, Ames), Eastern Iowa (Cedar Rapids, Iowa City, the Quad Cities, Dubuque), Northeast Iowa (Waterloo, the Driftless Area), Northwest Iowa (Sioux City, the Iowa Great Lakes), Southwest Iowa (Council Bluffs, the Loess Hills) and Southeast Iowa (Burlington, Ottumwa, Keokuk).

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