"Johnson County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 12,582. Its county seat is Vienna. It is located in the southern portion of Illinois known locally as \"Little Egypt\"."@en . "Johnson County"@en . . . . "14.2858"^^ . "8.90956e+08"^^ . . "1.4"^^ . "2010Z"^^ . "12582"^^ . "1.26909e+07"^^ . "9.03906e+08"^^ . . .