Sioux Falls vs Boulder for Retirees (2026)
Scroll down for retirement income tax breakdown, healthcare estimates, and FAQ.
Full retirement cost breakdown
| Metric | Sioux Falls South Dakota | Boulder Colorado |
|---|---|---|
| 1BR rent / month | $1,250Better | $2,300 |
| Median home price | $265KBetter | $800K |
| State income tax | NoneBetter | 4.4% |
| Sales tax (combined) | 6.4%Better | 8% |
| Monthly utilities | $155 | $138Better |
| Groceries index (US = 100) | 96Better | 109 |
| Est. healthcare / month | $440Better | $660 |
| Walk score (0–100) | 26 / 100 | 52 / 100Better |
| Overall COL index (100 = US avg) | 88Better | 132 |
Frequently asked questions
Which city is better for retirement — Sioux Falls or Boulder?
Based on home prices, taxes on retirement income, walkability, and overall cost of living, Sioux Falls scores better for retirees. Median home prices are $265K in Sioux Falls vs $800K in Boulder. Sioux Falls is approximately 33% cheaper overall. The best choice still depends on climate, healthcare access, and proximity to family.
Is retirement income taxed in Sioux Falls or Boulder?
South Dakota has no state income tax, meaning Social Security, pension, and retirement account withdrawals are not subject to state tax. Colorado has a 4.4% state income tax rate. For retirees, this difference can save thousands annually.
What is the estimated monthly healthcare cost in Sioux Falls vs Boulder?
Based on national average retiree healthcare spending (~$500/month) scaled by each city's cost-of-living index, estimated monthly healthcare costs are approximately $440 in Sioux Falls and $660 in Boulder. That's a difference of ~$220/month, or ~$2,640/year. Actual costs vary based on your Medicare plan, supplements, and health needs.
Can I afford to retire in Sioux Falls on a $50,000 annual income?
On a $50,000/year ($4,167/month) retirement income in Sioux Falls, rent alone would consume approximately 30% of your budget (1BR rent ~$1,250/mo) and healthcare another ~11%. That leaves roughly 59% (~$2,458/mo) for groceries, transportation, and other expenses. This is tight — a studio apartment or lower-cost neighborhood would help.
Which city is more walkable for retirees?
Boulder has a higher walk score (52 vs 26 out of 100). Walkability is increasingly important for retirees who want to reduce car dependence — a score above 70 means most daily errands can be done on foot. Boulder offers more independence without a car, which also reduces transportation costs.
$50K/year in Sioux Falls has the same purchasing power as $75K/year in Boulder
Healthcare estimates based on national avg retiree spending (~$500/mo) scaled by COL index · State income tax rates from Tax Foundation · Data: Zillow, BLS, Numbeo · Q1 2026