Johnson County added more than 3,500 residents during the past two years and is growing three times as fast as the state average.
The county’s population has grown by 2.5 percent since the 2010 Census, according to estimates from the U.S. Census Bureau. But Johnson County is no longer in the top five fastest-growing counties in the state and instead ranks sixth.
Johnson County’s population grew to 143,191 by July 2012, making it the 11th-most populous county in the state. New residents have clogged roads, families began building in subdivisions again, and children filled classrooms. But the new residents also help lure more stores and restaurants to communities.