Cost of Living: Rapid City vs Lafayette (2026)
Lafayette has a 4% lower overall cost of living than Rapid City as of Q1 2026. A one-bedroom apartment runs $1,100/mo in Lafayette vs $1,200/mo in Rapid City — a 9% difference. Rapid City has no state income tax, giving residents more take-home pay than those in Lafayette (4.3% rate).
- Lafayette is 4% cheaper overall (COL index: 88 vs 85)
- 1BR rent: $1,100/mo in Lafayette vs $1,200/mo — 8% savings
- Rapid City has 0% state income tax — saves ~$3,300+/yr at a $75K salary
- Higher median household income: Rapid City ($58,000/yr vs $50,000/yr)
- Median home price: $220,000 in Lafayette vs $285,000 — 23% difference
| Category | Rapid City South Dakota | Lafayette Louisiana |
|---|---|---|
| 🏠 HousingQ1 2026 | ||
| Studio rent/mo | $950 | $900Best |
| 1BR rent/mo | $1,200 | $1,100Best |
| 2BR rent/mo | $1,600 | $1,450Best |
| Median home price | $285K | $220KBest |
| 🛒 Food & GroceriesQ1 2026 | ||
| Groceries index (100 = US avg) | 96 | 95Best |
| Budget meal (1 person) | $12Best | $12 |
| Mid-range dinner (2) | $52 | $48Best |
| 🚌 TransportationQ1 2026 | ||
| Monthly transit pass/mo | $40Best | $42 |
| Gas price/gal | $3.10 | $3.00Best |
| Car insurance/mo | $138Best | $200 |
| ⚡ UtilitiesQ1 2026 | ||
| Monthly utilities bundle/mo | $148Best | $208 |
| Internet/mo | $65 | $58Best |
| 💰 Income & TaxesQ1 2026 | ||
| Median household income/yr | $58KBest | $50K |
| State income tax% | 0.0%Best | 4.3% |
| Sales tax (combined)% | 6.4%Best | 9.8% |
| 🎬 LeisureQ1 2026 | ||
| Movie ticket | $13.00Best | $13.00 |
| Gym membership/mo | $33 | $32Best |
| Beer at restaurant | $5.50 | $5.00Best |
| 📊 OverviewQ1 2026 | ||
| Overall COL index (100 = US avg) | 88 | 85Best |
| Walk score / 100 | 22Best | 22 |
Frequently asked questions
Is Rapid City cheaper than Lafayette?
No. Lafayette is 4% cheaper than Rapid City based on overall cost of living indices (85 vs 88, where 100 = US average).
What is the average rent in Rapid City vs Lafayette?
As of Q1 2026, the median 1-bedroom rent in Rapid City is $1,200/month and in Lafayette is $1,100/month. Rapid City is more expensive by 9%.
How much do I need to earn in Lafayette to match a $75,000 salary in Rapid City?
To maintain a similar lifestyle, you would need approximately $72,443/year in Lafayette to match a $75,000 salary in Rapid City. This estimate is based on overall cost of living indices and does not account for individual spending patterns.
Which city has lower taxes — Rapid City or Lafayette?
Rapid City has the lower state income tax rate at 0% vs 4.3%. Rapid City has no state income tax at all, which can save thousands of dollars per year depending on your income. Note that sales tax and local taxes also vary — see the full breakdown in the table above.
Is it worth moving from Rapid City to Lafayette?
It depends on your priorities. Lafayette offers lower overall costs and tax advantages, but both cities have different job markets, weather, and lifestyle trade-offs. Use the comparison table above to evaluate rent, groceries, transportation, and income potential side by side based on your specific budget.
Data sourced from Zillow, BLS, Numbeo, Tax Foundation, and US Census ACS · Updated Q1 2026 · For general guidance only
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