Population growth in Marple and Newtown townships over the next three decades is expected to be less than that in the county and in southeastern Pennsylvania at large, according to forecasts by the Delaware Valley Regional Planning Commission.

Marple is likely to decrease 1.1 percent of its population (about 254 residents) between 2010 and 2040, compared to a 1.8 percent increase for Newtown (about 222 residents). Delaware County is expected to grow by 2 percent in that period and an overall 12 percent growth for southeaster Pennsylvania.

View the chart below to see how Marple and Newtown compare to other counties in the area.

The agency has projections for every five years and also has created an interactive map to browse its projections.