$100K in Rapid City = $110,227 in Missoula
Your $100K salary in Rapid City (COL 88) has the same purchasing power as $110,227 in Missoula (COL 97). Missoula is more expensive — you'd need 10% more to maintain the same lifestyle.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Rapid City $100K | Missoula $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,321 | $5,754 |
| 1BR rent | $1,200 | $1,300 |
| Groceries | $365 | $376 |
| Transport | $40 | $45 |
| Utilities | $148 | $145 |
| Internet | $65 | $68 |
| Left after essentials | $4,503/month | $3,820/month |
Frequently asked questions
What is $100K in Rapid City equivalent to in Missoula?
$100K in Rapid City (COL index 88) has the same purchasing power as $110,227 in Missoula (COL index 97). That's 10% more than your current salary.
If I move from Rapid City to Missoula keeping my $100K salary, will I be better off?
Not necessarily. Core expenses in Missoula are higher, so on the same $100K salary you'd have $683 less per month. You'd need to earn $110,227 to maintain the same standard of living.
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 × (97 ÷ 88) = $110,227. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Rapid City to Missoula
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only