Indices like Numbeo, Mercer and the Economist's Worldwide Cost of Living rank cities. Within Switzerland, Zurich and Geneva consistently top global lists; rural cantons are 20–40% cheaper. Within the US, San Francisco, NYC and Honolulu lead; many Midwestern cities run half the cost.
Cost of living drives salary negotiations, relocation decisions and retirement planning. A USD 100k salary in San Francisco delivers a meaningfully different lifestyle than the same salary in Cleveland; FIRE seekers often relocate to lower-cost areas to extend their savings.
Living in Zurich costs roughly twice as much as living in Lisbon for an equivalent lifestyle — primarily driven by housing, dining and healthcare premiums.