$75K in Naperville = $65,250 in St. Louis
Your $75K salary in Naperville (COL 100) has the same purchasing power as $65,250 in St. Louis (COL 87). St. Louis is cheaper — your money goes 13% further there.
Budget breakdown — $75K in both cities
What $75K actually buys you in each city after taxes and core expenses.
| Expense | Naperville $75K | St. Louis $75K (same salary) |
|---|---|---|
| Monthly take-home | $4,428 | $4,447 |
| 1BR rent | $1,650 | $1,300 |
| Groceries | $380 | $369 |
| Transport | $72 | $75 |
| Utilities | $158 | $162 |
| Internet | $62 | $60 |
| Left after essentials | $2,106/month | $2,481/month |
Frequently asked questions
What is $75K in Naperville equivalent to in St. Louis?
$75K in Naperville (COL index 100) has the same purchasing power as $65,250 in St. Louis (COL index 87). That's 13% less than your current salary.
If I move from Naperville to St. Louis keeping my $75K salary, will I be better off?
Yes. If you keep earning $75K after moving to St. Louis, you'd have $375 more per month after core expenses — because St. Louis is cheaper than Naperville.
How is the salary equivalent calculated?
The equivalent salary is calculated by multiplying your current salary by the ratio of the two cities' overall cost of living indices: $75K × (87 ÷ 100) = $65,250. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Naperville to St. Louis
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only