 About 5.50% of families and 7.10% of the population were below the poverty line, including 8.50% of those under age 18 and 9.40% of those age 65 or over.As of 2006, Fort Bend County is the wealthiest county in Texas, with a median household income of $95,389 and a median family income of $105,944, having surpassed Collin and Rockwall Counties since the 2000 census.However, the Council for Community and Economic Research ranked Fort Bend County America's third-wealthiest county when the local cost of living was factored in.