The data for Linn County are summarized in this water planning data fact sheet. Linn County is located in east central Iowa.
Manufacturing is the principal economic sector, as measured by employee earnings.
The county contains steeply rolling hills, the Cedar and Wapsipinicon River Valleys, and small drainage streams. The population of 168,767 is distributed in 18 incorporated cities and the surrounding rural areas. U.S. Highways 30 and 151 cross the county from east to west. Interstate Highway 380 and State Highway 13 cross the county from north to south. This data sheet focuses on water uses that withdraw water from ground and surface water sources.