$100K in Springfield = $88,776 in St. Louis
Your $100K salary in Springfield (COL 98) has the same purchasing power as $88,776 in St. Louis (COL 87). St. Louis is cheaper — your money goes 11% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Springfield $100K | St. Louis $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,904 | $5,929 |
| 1BR rent | $1,450 | $1,300 |
| Groceries | $391 | $369 |
| Transport | $72 | $75 |
| Utilities | $185 | $162 |
| Internet | $65 | $60 |
| Left after essentials | $3,741/month | $3,963/month |
Frequently asked questions
What is $100K in Springfield equivalent to in St. Louis?
$100K in Springfield (COL index 98) has the same purchasing power as $88,776 in St. Louis (COL index 87). That's 11% less than your current salary.
If I move from Springfield to St. Louis keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to St. Louis, you'd have $222 more per month after core expenses — because St. Louis is cheaper than Springfield.
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: $100K × (87 ÷ 98) = $88,776. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Springfield 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