Fullerton is 15% more expensive than Downey.
When comparing Fullerton, CA and Downey, CA, the overall cost of living indices are 195 and 169 respectively (national median = 100). Rent is $232/month cheaper in Downey, saving renters about $2,784/year.
Median household income is $16,819/year higher in Fullerton. Home values also differ significantly — the median in Fullerton is $859,600 compared to $728,500 in Downey.
Both cities share the same state tax structure since they are in California.
Fullerton vs Downey — common questions
Other cost of living comparisons for Fullerton and Downey