Anne Arundel County residents could be cheating themselves out of millions of dollars that would be spent on services they use.

With the U.S. Census coming up, county and state officials are launching efforts to increase make sure everyone gets counted.

"For every 1 percent of the population that's undercounted, that means millions of dollars of federal aid we could be missing out on," said Erik Robey, director of community and constituent services. "It's so important."

In the 2000 census, 24 percent of the county population wasn't county, above the nationwide average but still a pretty...