Dewart is a census-designated place located in Delaware Township, Northumberland County in the state of Pennsylvania. The community is located very close to the West Branch Susquehanna River along Pennsylvania Route 405 in far northern Northumberland County. As of the 2010 census the population was 1,471 residents.

Demographics

Historical population

Census	Pop.	Note	%±
2020	1,385		—
U.S. Decennial Census