New York is 20% more expensive than Thornton.
When comparing New York, NY and Thornton, CO, the overall cost of living indices are 166 and 138 respectively (national median = 100). Rent is comparable in both cities, with less than $50/month separating them.
Median household income is $21,272/year higher in Thornton. Home values also differ significantly — the median in New York is $751,700 compared to $482,200 in Thornton.
Colorado has a lower income tax rate, making Thornton slightly more tax-friendly.
New York vs Thornton — common questions
Other cost of living comparisons for New York and Thornton