I’ve seen similar problems in Wisconsin with the county borders and some of the town borders. Some of them seem to be pretty accurate, but they’re not in the right position on the map (example- north boundary for Dane County in Wisconsin- the border should actually be in line with Schoepp Road here and Fish Lake Natural Resource Area & Lussier County Park should be within the county here: osm.org/#map=15/43.2902/-89.6560)