$120K in Bismarck = $121,379 in Sioux Falls
Your $120K salary in Bismarck (COL 87) has the same purchasing power as $121,379 in Sioux Falls (COL 88). Sioux Falls is more expensive — you'd need 1% more to maintain the same lifestyle.
Budget breakdown — $120K in both cities
What $120K actually buys you in each city after taxes and core expenses.
| Expense | Bismarck $120K | Sioux Falls $120K (same salary) |
|---|---|---|
| Monthly take-home | $6,905 | $7,155 |
| 1BR rent | $1,150 | $1,250 |
| Groceries | $369 | $365 |
| Transport | $42 | $42 |
| Utilities | $152 | $155 |
| Internet | $65 | $60 |
| Left after essentials | $5,127/month | $5,283/month |
Frequently asked questions
What is $120K in Bismarck equivalent to in Sioux Falls?
$120K in Bismarck (COL index 87) has the same purchasing power as $121,379 in Sioux Falls (COL index 88). That's 1% more than your current salary.
If I move from Bismarck to Sioux Falls keeping my $120K salary, will I be better off?
Not necessarily. Core expenses in Sioux Falls are higher, so on the same $120K salary you'd have $156 less per month. You'd need to earn $121,379 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: $120K × (88 ÷ 87) = $121,379. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Bismarck to Sioux Falls
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only