City-Data.com: Marble Rock, Iowa - Profiles housing, population demographics, jobs, weather and climate tables. Includes a list of area hospitals, schools, airports, radio and TV broadcast stations, charts and maps.
Marble Rock - Provides information about businesses, recreation, museum, library, civic organizations, history and cemeteries. Includes monthly journal and photographs.
Wikipedia - Marble Rock, Iowa - Encyclopedia article features geography and demographics of this community in Floyd County.
