Austin is 120% more expensive than Springfield.
When comparing Austin, TX and Springfield, IL, the overall cost of living indices are 134 and 61 respectively (national median = 100). Rent is $710/month cheaper in Springfield, saving renters about $8,520/year.
Median household income is $25,924/year higher in Austin. Home values also differ significantly — the median in Austin is $512,700 compared to $155,200 in Springfield.
Texas has no state income tax, giving Austin residents a significant tax advantage over Illinois's 4.95% rate.
Austin vs Springfield — common questions
Other cost of living comparisons for Austin and Springfield