Grace Elisabeth Ziesmer, 22, has been charged with one count of misdemeanor vandalism and two counts of misdemeanor graffiti.
Officials say the postings included swastikas, SS mottos and other neo-Nazi symbols.
Prosecutors say Ziesmer was not charged with a hate crime because there is no evidence that her conduct targeted a particular victim or group.
The current charges could land her in jail for up to a year and a half.