San Francisco is 167% more expensive than Aurora.
When comparing San Francisco, CA and Aurora, IL, the overall cost of living indices are 267 and 100 respectively (national median = 100). Rent is $884/month cheaper in Aurora, saving renters about $10,608/year.
Median household income is $51,337/year higher in San Francisco. Home values also differ significantly — the median in San Francisco is $1,380,500 compared to $260,400 in Aurora.
Illinois has a lower income tax rate, making Aurora slightly more tax-friendly.
San Francisco vs Aurora — common questions
Other cost of living comparisons for San Francisco and Aurora