Park service marker located at the 45x90 point
Poniatowski is an unincorporated community in Marathon County, Wisconsin, United States, within the town of Rietbrock. The community is likely named in the honor of the noble Polish family of the same name.
Poniatowski is claimed to be located at 45°0′0″N 90°0′0″W / 45.00000°N 90.00000°W. This makes it one of only two 45X90 points on land. The center of the community is actually at 44.9947°N, 89.9942°W.
- ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.