Grundy Center is a city in Grundy County, Iowa, United States. The population was 2,706 at the 2010 census a 4.2% increase from 2,596 at the 2000 census. Grundy Center is also the county seat of Grundy County. Grundy Center is part of the Waterloo–Cedar Falls Metropolitan Statistical Area.
Often simply called "Grundy", the town has three public education centers. Kindergarten through 4th grade is in the primary building, grade levels 5-12 located at the Jr-Sr High School. The community preschool is located in the former middle school building just next to the current primary building. The YMCA and early childhood center also share that building. The city of Grundy Center also has three public parks, Bel Pre, Orion and Liberty Park. Located just south of the Liberty Park is the city swimming pool, that is open only in the summer months.