According to GOBankingRates.com, Springfield is near the top of the list of cities where you can live comfortably for under $50k per year. I'm not sure if that's a good thing or a bad thing... anyway, here's the Top 5.
Top 5 Cities That Require the Lowest Salaries to Live
El Paso, Texas - $40,204
Springfield, Missouri - $40,834
Lubbock, Texas - $43,201
Albuquerque, New Mexico - $43,573
Detroit, Michigan - $44,080