Ontonagon County
Ontonagon County Details
Map Coord - Letter = OM
Map Coord - Number = 99
| City/Township | Realcomp Map Area |
| BERGLAND TOWNSHIP | 66061 |
| BOHEMIA TOWNSHIP | 66051 |
| CARP LAKE TOWNSHIP | 66011 |
| GREENLAND TOWNSHIP | 66041 |
| HAIGHT TOWNSHIP | 66101 |
| INTERIOR TOWNSHIP | 66111 |
| MATCHWOOD TOWNSHIP | 66071 |
| MCMILLAN TOWNSHIP | 66081 |
| ONTONAGON | 66022 |
| ONTONAGON TOWNSHIP | 66021 |
| ROCKLAND TOWNSHIP | 66031 |
| STANDARD TOWNSHIP | 66091 |