The famous person C.F. Singmaster is associated with one of more of the Keokuk County historic places.
Some of the country's most noteable architects helped create the Keokuk County places including James Harlan, E.K. Bruce Jr., Holmes&Flynn Patton, Joseph Merrifield, Wetherell and Gage, Wetherell of Oskaloosa, Burdette Higgins, Harry Schroeder, John Herman and Wetherell & Gage. Prominent architectural styles found in Keokuk Country are Classical Revival, Colonial Revival and Italianate.