Hayward and Simi Valley have a similar cost of living.
When comparing Hayward, CA and Simi Valley, CA, the overall cost of living indices are 200 and 200 respectively (national median = 100). Rent is $153/month cheaper in Hayward, saving renters about $1,836/year.
Median household income is $3,928/year higher in Simi Valley. Home values also differ significantly — the median in Hayward is $820,700 compared to $753,500 in Simi Valley.
Both cities share the same state tax structure since they are in California.
Hayward vs Simi Valley — common questions
Other cost of living comparisons for Hayward and Simi Valley