Grinnell is a city in Poweshiek County, Iowa, United States. The population was 9,218 at the 2010 census. Grinnell was named after Josiah Bushnell Grinnell and is the home of Grinnell College.
Grinnell was founded in 1854 by Josiah B. Grinnell. The city was originally slated to be named "Stella," but J.B. Grinnell convinced other members of the colony to adopt his own name for the city, citing it as a rare and concise name. By 1880 Grinnell had a population of around 2000. Located at the junction of two railway lines (east-west line of the Rock Island Railroad and the north-south Minneapolis & St Louis (M&St L) Railroad) it became and remains the largest community in Poweshiek County.
Grinnell was a stop on the Underground Railroad.