Cost of Living: Lafayette vs Idaho Falls (2026)
Lafayette has a 2% lower overall cost of living than Idaho Falls as of Q1 2026. A one-bedroom apartment runs $1,100/mo in Idaho Falls vs $1,100/mo in Lafayette — a 0% difference. Lafayette has a lower state income tax rate (4.3% vs 5.8%), which adds up over time.
- Lafayette is 2% cheaper overall (COL index: 85 vs 87)
- 1BR rent: $1,100/mo in Idaho Falls vs $1,100/mo — 0% savings
- Higher median household income: Idaho Falls ($56,000/yr vs $50,000/yr)
- Median home price: $220,000 in Lafayette vs $310,000 — 29% difference
| Category | Lafayette Louisiana | Idaho Falls Idaho |
|---|---|---|
| 🏠 HousingQ1 2026 | ||
| Studio rent/mo | $900Best | $900 |
| 1BR rent/mo | $1,100Best | $1,100 |
| 2BR rent/mo | $1,450Best | $1,450 |
| Median home price | $220KBest | $310K |
| 🛒 Food & GroceriesQ1 2026 | ||
| Groceries index (100 = US avg) | 95Best | 96 |
| Budget meal (1 person) | $12Best | $12 |
| Mid-range dinner (2) | $48Best | $50 |
| 🚌 TransportationQ1 2026 | ||
| Monthly transit pass/mo | $42 | $35Best |
| Gas price/gal | $3.00Best | $3.40 |
| Car insurance/mo | $200 | $132Best |
| ⚡ UtilitiesQ1 2026 | ||
| Monthly utilities bundle/mo | $208 | $142Best |
| Internet/mo | $58Best | $65 |
| 💰 Income & TaxesQ1 2026 | ||
| Median household income/yr | $50K | $56KBest |
| State income tax% | 4.3%Best | 5.8% |
| Sales tax (combined)% | 9.8% | 6.0%Best |
| 🎬 LeisureQ1 2026 | ||
| Movie ticket | $13.00Best | $13.00 |
| Gym membership/mo | $32Best | $33 |
| Beer at restaurant | $5.00Best | $5.50 |
| 📊 OverviewQ1 2026 | ||
| Overall COL index (100 = US avg) | 85Best | 87 |
| Walk score / 100 | 22Best | 18 |
Frequently asked questions
Is Lafayette cheaper than Idaho Falls?
Yes. Lafayette is 2% cheaper than Idaho Falls based on overall cost of living indices (85 vs 87, where 100 = US average).
What is the average rent in Lafayette vs Idaho Falls?
As of Q1 2026, the median 1-bedroom rent in Lafayette is $1,100/month and in Idaho Falls is $1,100/month. Lafayette is more expensive by 0%.
How much do I need to earn in Idaho Falls to match a $75,000 salary in Lafayette?
To maintain a similar lifestyle, you would need approximately $76,765/year in Idaho Falls to match a $75,000 salary in Lafayette. This estimate is based on overall cost of living indices and does not account for individual spending patterns.
Which city has lower taxes — Lafayette or Idaho Falls?
Lafayette has the lower state income tax rate at 4.3% vs 5.8%. The difference is 1.5 percentage points. Note that sales tax and local taxes also vary — see the full breakdown in the table above.
Is it worth moving from Lafayette to Idaho Falls?
It depends on your priorities. Lafayette offers lower overall costs, 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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