Mexico

Mexico hosts 1.5 million Americans and Canadians, a number 3x larger than #3 Costa Rica's expat community. Social Security stretches 2–3x further, with IMSS public healthcare costing $500/year for comprehensive coverage—20% of typical U.S. premiums. Private medical care rivals U.S. quality at 10–20% of cost, and no minimum income is required for the standard resident visa, unlike #2 Costa Rica's fixed threshold. Popular hubs like San Miguel de Allende and Lake Chapala offer 300+ days of sunshine annually.