MADISON, WI (WTAQ) - If current population trends continue, Wisconsin will gain an extra 800,000 residents over the next three decades. That’s according to projections Thursday from the state Administration Department, which say the Badger State could have 6.5 million residents by 2040. UW Madison analyst David Egan-Robertson said that as the state’s economy recovers, the state’s net migration would change from negative to positive by 2014-or-’15. That means more people would be arriving in Wisconsin than leaving. Wisconsin would have a strong net migration through the middle of the next decade. And the report says the net increase would be similar to the growth the Badger State saw in the mid-1990’s. Also, number of residents 65-and-older is expected to grow dramatically, while a most increase is expected in people 64-and-under. The report is based on trends outlined in the 2010 Census.