Nearly two-thirds of Iowa's counties lost population between 2011 and 2012 even as the state gained over 10,000 residents overall. The latest U.S. Census estimates show that Iowa had just over 3,074,000 residents last year, but the population of 65 of the state's 99 counties declined between 2011 and 2012. Many of the population declines were in rural areas where younger residents move to urban areas in search of work. Fifty-five Iowa counties had more deaths than births in 2012. The biggest population gains in the state were reported in Polk, Johnson, Dallas, Scott and Linn counties.