Newington is a census-designated place (CDP) in Fairfax County, Virginia, United States. The population was 12,943 at the 2010 census. The 2010 census showed a significant decrease after half the population was split off to the newly created Newington Forest CDP.

Based on that paragraph can we conclude that this sentence is true?
Newington's population will decrease by 2020.
It's impossible to say