Rock County is a highly rural county in southwestern Minnesota. It was named for the Rock River, which flows through the county.
The seat is Ivanhoe while Tyler is the largest city. Main highways through the county include I-90, US-75 and MN-23.
Rock County also borders Pipestone, Murray and Nobles Counties in Minnesota, as well as Minnehaha and Moody Counties in South Dakota, and Lyon County in Iowa.
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