8. Plano, Texas
Population: 271,166
Median household income: $82,944
Cost of living: 113 (National Average is 100)
With great weather and high graduation rates, this city sure is one of the 16 up and coming affordable small cities to live in the USA. Their median household income is at 55% higher than the national average, which also explains their population. Most people would naturally want to live somewhere they can earn more and spend less.