5 States for Couples Retiring on Just Social Security in the US

2. South Dakota

Insider Monkey Score: 71

Cost of Living Index: 92.4

Tax Friendliness: Very Tax-Friendly

Health Index: 97.9

Average Rent (2-bedroom): $1,028

Coming in second place, South Dakota boasts a tax-friendly environment, affordable cost of living, and a healthcare ranking that is close to national marks. Since there is no income tax in the state, all sorts of retirement income goes to retirees tax-free. Healthcare in the state is also decent, making the state a good choice for couples living on social security alone.