Aurora is 75% more expensive than Rockford.
When comparing Aurora, IL and Rockford, IL, the overall cost of living indices are 100 and 57 respectively (national median = 100). Rent is $581/month cheaper in Rockford, saving renters about $6,972/year.
Median household income is $36,781/year higher in Aurora. Home values also differ significantly — the median in Aurora is $260,400 compared to $120,900 in Rockford.
Both cities share the same state tax structure since they are in Illinois.
Aurora vs Rockford — common questions
Other cost of living comparisons for Aurora and Rockford