Simi Valley is 29% more expensive than Vallejo.
When comparing Simi Valley, CA and Vallejo, CA, the overall cost of living indices are 200 and 155 respectively (national median = 100). Rent is $500/month cheaper in Vallejo, saving renters about $6,000/year.
Median household income is $28,207/year higher in Simi Valley. Home values also differ significantly — the median in Simi Valley is $753,500 compared to $557,500 in Vallejo.
Both cities share the same state tax structure since they are in California.
Simi Valley vs Vallejo — common questions
Other cost of living comparisons for Simi Valley and Vallejo