D.C.'s vast health-care system, with plenty of doctors to accommodate the senior population and generous Medicaid spending on long-term care, helped it land the No. 1 spot. Additionally, the abundance of attractions in area, like museums and monuments, make it a fun and lively place to retire.
One big caveat: D.C.'s high cost of living may make it difficult for retirees to live comfortably, depending on their financial situation.