Government in Deer Grove, IL Hahnaman Township28806 Hub StDeer Grove, IL, 612438154382925Government CityHannaman Township Town Hall28835 Hub StDeer Grove, IL, 612438154383113City Hall OfGovernment City Village TownshipProphetstown City HallSublette Township B8dgWyanet City HallShow MoreSee AlsoCity, Village & Township Government