Rock Rapids, Iowa, US is the county seat of Lyon County, established in 1872. The city was named after the rocky rapids of the Rock River that flows through it. With a population of approximately 2,500 as of 2020, it is the largest community in the county. The city's historic courthouse, built in 1892, is a notable landmark, listed on the National Register of Historic Places since 1976.
Ace Hardware takes the top spot among Home Improvement Stores in Rock Rapids, Iowa with 1 locations as of May 8, 2024.