St. Louis and Augusta have a similar cost of living.
When comparing St. Louis, MO and Augusta, GA, the overall cost of living indices are 66 and 67 respectively (national median = 100). Rent is $109/month cheaper in St. Louis, saving renters about $1,308/year.
Median household income is $2,145/year higher in St. Louis. Home values also differ significantly — the median in St. Louis is $185,100 compared to $162,900 in Augusta.
Missouri has a lower income tax rate, making St. Louis slightly more tax-friendly.
St. Louis vs Augusta — common questions
Other cost of living comparisons for St. Louis and Augusta