Cost of Living: Idaho Falls vs Trenton (2026)
Idaho Falls has a 17% lower overall cost of living than Trenton as of Q1 2026. A one-bedroom apartment runs $1,100/mo in Idaho Falls vs $1,700/mo in Trenton — a 35% difference. Idaho Falls has a lower state income tax rate (5.8% vs 9%), which adds up over time.
- Idaho Falls is 17% cheaper overall (COL index: 87 vs 105)
- 1BR rent: $1,100/mo in Idaho Falls vs $1,700/mo — 35% savings
- Higher median household income: Idaho Falls ($56,000/yr vs $55,000/yr)
- Median home price: $310,000 in Trenton vs $310,000 — 0% difference
| Category | Idaho Falls Idaho | Trenton New Jersey |
|---|---|---|
| 🏠 HousingQ1 2026 | ||
| Studio rent/mo | $900Best | $1,350 |
| 1BR rent/mo | $1,100Best | $1,700 |
| 2BR rent/mo | $1,450Best | $2,300 |
| Median home price | $310KBest | $310K |
| 🛒 Food & GroceriesQ1 2026 | ||
| Groceries index (100 = US avg) | 96Best | 104 |
| Budget meal (1 person) | $12Best | $15 |
| Mid-range dinner (2) | $50Best | $62 |
| 🚌 TransportationQ1 2026 | ||
| Monthly transit pass/mo | $35Best | $80 |
| Gas price/gal | $3.40Best | $3.40 |
| Car insurance/mo | $132Best | $172 |
| ⚡ UtilitiesQ1 2026 | ||
| Monthly utilities bundle/mo | $142Best | $215 |
| Internet/mo | $65Best | $68 |
| 💰 Income & TaxesQ1 2026 | ||
| Median household income/yr | $56KBest | $55K |
| State income tax% | 5.8%Best | 9.0% |
| Sales tax (combined)% | 6.0%Best | 6.6% |
| 🎬 LeisureQ1 2026 | ||
| Movie ticket | $13.00Best | $15.00 |
| Gym membership/mo | $33Best | $45 |
| Beer at restaurant | $5.50Best | $7.00 |
| 📊 OverviewQ1 2026 | ||
| Overall COL index (100 = US avg) | 87Best | 105 |
| Walk score / 100 | 18 | 63Best |
Frequently asked questions
Is Idaho Falls cheaper than Trenton?
Yes. Idaho Falls is 17% cheaper than Trenton based on overall cost of living indices (87 vs 105, where 100 = US average).
What is the average rent in Idaho Falls vs Trenton?
As of Q1 2026, the median 1-bedroom rent in Idaho Falls is $1,100/month and in Trenton is $1,700/month. Idaho Falls is cheaper by 35%.
How much do I need to earn in Trenton to match a $75,000 salary in Idaho Falls?
To maintain a similar lifestyle, you would need approximately $90,517/year in Trenton to match a $75,000 salary in Idaho Falls. This estimate is based on overall cost of living indices and does not account for individual spending patterns.
Which city has lower taxes — Idaho Falls or Trenton?
Idaho Falls has the lower state income tax rate at 5.8% vs 9%. The difference is 3.2 percentage points. Note that sales tax and local taxes also vary — see the full breakdown in the table above.
Is it worth moving from Idaho Falls to Trenton?
It depends on your priorities. Idaho Falls 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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