Upper Dublin Township is a township in Montgomery County, Pennsylvania, United States. The population was 25,569 at the 2010 census. Until the 1950s, Upper Dublin was mostly farmland and open space, but transitioned to a residential suburb during the postwar population boom. The population went from just over 6,000 residents in the 1950s to just under 20,000 by 1970. Today, Upper Dublin is mostly spread-out development housing, and has the fourth highest median income in Montgomery County.

Montgomery County, colloquially referred to as Montco, is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population of the county was 856,553, making it the third-most populous county in Pennsylvania after Philadelphia and Allegheny counties. The county is part of the Southeast Pennsylvania region of the state.