One of these pieces about NFL fan divisions came during the regular season, while another one popped up shortly before the Super Bowl.
The first is an unattributed map of media markets, linked via Reddit, which gives three teams for most of the state: Chicago Bears for eastern and central Iowa, Minnesota Vikings for north-central and northwest Iowa, Kansas City Chiefs for southwest Iowa, St. Louis Rams for Lee County, and a no-man’s-land for the Ottumwa-Kirksville market (Davis, Jefferson, Van Buren, and Wapello counties).
The other is a county-level map compiled from Facebook data. The biggest version I saw was via Popular Science. It looks much the same, but with some things you might not expect: Bears in the east, Vikings in the north and central, Packers counties scattered throughout, and Chiefs — but also a bunch of Cowboys — in the southwest. Then there’s Jones County, judged by Facebook to be a hotbed of Patriots fans. What’s up with that?
For the record: Tama and Marshall counties are judged to make up an edge of Vikings country, while Grundy, Poweshiek, and Jasper are majority Packers; Polk, Black Hawk, plus Benton and eastward are for Da Bears.