City of Roseville. Roseville is a city in Ramsey County, Minnesota, just north of Saint Paul and east of Minneapolis. It is one of two Twin Cities suburbs that are adjacent to both Saint Paul and Minneapolis (the other is Lauderdale). The land comprising Falcon Heights, Lauderdale, and southern Roseville was part of Saint Paul until Roseville incorporated in 1948 and Falcon Heights and Lauderdale in 1949.