According to the Network of Schools of Public Policy, Affairs, and Administration (NASPAA), a MPA is an ideal degree if you desire a career in a government agency, a nonprofit, or in a philanthropic institution. The MPA is also flexible enough to allow you to work in the private sector, which is where many MPA graduates work.
MPA graduates are found in a variety of fields and policy areas across all career sectors. And since the arena of public service is so vast, the degree will enable you to synthesize and transfer all of your education, volunteer work, and professional experience into a meaningful career.
Please visit the NASPAA website if you have other more broad questions about the MPA degree.