Data source:
Living and minimum wage: https://livingwage.mit.edu/
Median household wage( salary divided by 2080) : https://www.census.gov/quickfacts/fact/table/US/SEX255221
Tools used: MS Excel
I was inspired by MIT Living Wage calculator and decided to plot the data for 30 cities.
Cost of Living score is calculated in following way:
Firstly each city's median and minimum wage was compared to living wage for a single adult with no children and living wage for two adults with two children . Next, z scores were taking of these ratios and averaged out.
Finally, Z score was adjusted to a 1-100 scale so it's easier to understand.