Can I Afford to Live in St. Louis vs Honolulu on $40K?
Here's how a $40K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.
Monthly budget breakdown
| Expense | St. Louis MO | Honolulu HI |
|---|---|---|
| Monthly take-home (est.) | $2,572 | $2,362 |
| 1BR rent | $1,300 | $3,200 |
| Groceries (est.) | $369 | $456 |
| Transport (est.) | $75 | $70 |
| Utilities | $162 | $185 |
| Internet | $60 | $75 |
| Left after essentials | $606/month | -$1,624/month |
Frequently asked questions
Is $40K a good salary in St. Louis?
At $40K/year in St. Louis, your estimated monthly take-home is $2,572. With 1BR rent around $1,300/month, rent takes up 51% of your take-home. That's considered difficult.
Is $40K a good salary in Honolulu?
At $40K/year in Honolulu, your estimated monthly take-home is $2,362. With 1BR rent around $3,200/month, rent takes up 135% of your take-home. That's considered difficult.
Which city is more affordable on a $40K salary?
St. Louis leaves you with more money after core expenses — $606/month vs $-1,624/month in Honolulu.
Can I afford to live alone in St. Louis on $40K?
It's tight. Rent in St. Louis would take 51% of your $40K take-home pay. You may need to find roommates or look at studios to stay within the 30% rule.
See the full cost-of-living comparison
Rent, groceries, taxes, transportation, and more — side by side.
Take-home estimates use simplified federal/state brackets and do not account for pre-tax deductions, 401(k), or local taxes. Data: Zillow, BLS, Numbeo · Q1 2026 · For general guidance only