The data for Franklin County are summarized in this water planning data fact sheet.
Franklin County is located in north central Iowa.
Farming is the principal economic activity, as measured by employee earnings. The county contains gently rolling hills, poorly drained plains, and small drainage streams. The population of 11,364 is distributed in 10 incorporated cities and the surrounding rural areas. Interstate Highway 35 and U.S. Highway 65 cross the county from north to south. State Highway 3 crosses the center of the county from east to west.