Idaho Falls vs Knoxville for Families (2026)
A family-focused comparison of housing, income, taxes, and overall affordability in Idaho Falls, ID vs Knoxville, TN.
- 2BR rent: $1,450/mo in Idaho Falls vs $1,700/mo — 15% difference
- More affordable homeownership in Knoxville: $290K median vs $310K
- Higher median household income in Idaho Falls: $56K/yr vs $53K
- Knoxville has no state income tax — more take-home for family expenses
Family cost comparison
| Metric | Idaho Falls Idaho | Knoxville Tennessee |
|---|---|---|
| 2BR rent/month | $1,450Better | $1,700 |
| Median home price | $310K | $290KBetter |
| Median household income | $56KBetter | $53K |
| Est. childcare/month | $1,131Better | $1,131 |
| State income tax | 5.8% | NoneBetter |
| Sales tax (combined) | 6%Better | 9.5% |
Frequently asked questions
Which city is better for raising a family — Idaho Falls or Knoxville?
Based on housing costs, income, and taxes, Knoxville scores slightly better for families overall. Idaho Falls has lower 2-bedroom rents, Knoxville is more affordable for homebuyers, though both cities have strong family communities.
What is the average 2-bedroom rent in Idaho Falls vs Knoxville?
As of Q1 2026, median 2BR rent is $1,450/month in Idaho Falls and $1,700/month in Knoxville. Idaho Falls is 15% cheaper for a 2-bedroom apartment.
Can a family afford to buy a home in Idaho Falls or Knoxville?
The price-to-income ratio in Idaho Falls is 5.5× ($310K home, $56K income) vs 5.5× in Knoxville. A ratio below 3× is generally considered affordable. Knoxville is more achievable for first-time family homebuyers.
How much does childcare cost in Idaho Falls vs Knoxville?
Based on cost-of-living indices, estimated childcare (infant/toddler) runs approximately $1,131/month in Idaho Falls and $1,131/month in Knoxville. These are estimates — actual costs vary by provider and program type.
Which city has lower taxes for families?
Idaho Falls has a 5.8% state income tax rate vs Knoxville (Tennessee) has no state income tax. For a dual-income family earning $120K combined, the difference can mean $348+/month in take-home.
Childcare estimates based on national average scaled by COL index. Data: Zillow, BLS, Numbeo, Tax Foundation · Q1 2026
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