$100K in Washington = $56,863 in St. Louis
Your $100K salary in Washington (COL 153) has the same purchasing power as $56,863 in St. Louis (COL 87). St. Louis is cheaper — your money goes 43% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Washington $100K | St. Louis $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,838 | $5,929 |
| 1BR rent | $3,100 | $1,300 |
| Groceries | $422 | $369 |
| Transport | $100 | $75 |
| Utilities | $190 | $162 |
| Internet | $75 | $60 |
| Left after essentials | $1,951/month | $3,963/month |
Frequently asked questions
What is $100K in Washington equivalent to in St. Louis?
$100K in Washington (COL index 153) has the same purchasing power as $56,863 in St. Louis (COL index 87). That's 43% less than your current salary.
If I move from Washington 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 $2,012 more per month after core expenses — because St. Louis is cheaper than Washington.
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 ÷ 153) = $56,863. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Washington 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