North Polk: Ankeny, Johnston & Grimes

I-35 / US-69 North

The northern Polk County suburbs along I-35 and US-69, anchored by Ankeny (Polk County's second-largest city and one of the fastest-growing in Iowa), Johnston (home to Corteva/Pioneer Hi-Bred's corporate campus), and Grimes. Polk City and the Saylorville Lake recreation area form the northern edge. The John Deere Financial corporate campus sits in Johnston.