Iowa's 10th congressional district

Iowa's 10th congressional district existed from 1883 to 1933, when Iowa sent eleven congressmen to the United States House of Representatives. The district, known as "The Big Tenth," covered large areas of north-central Iowa.

From 1883 to 1886, the district included the north-central Iowa counties of Worth, Cerro Gordo, Franklin, Hardin, Story, Wright, Hamilton, Humboldt, Hancock, Kossuth, Winnebago, Webster, and Boone. Reapportionment in 1886 reflected the increasing population balance between eastern and western Iowa, resulting in a westward shift of the district's boundaries. From 1886 until 1933, the district was made up of Boone, Calhoun, Carroll, Crawford, Emmet, Greene, Hamilton, Humboldt, Kossuth, Palo Alto, Pocahontas, Winnebago, and Webster counties. After 1886, the boundaries of the district never changed; the Iowa General Assembly refused to reapportion its districts until the loss of two seats following the 1930 census left the State with no other choice.

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