$100K in Sioux Falls = $115,909 in Flagstaff
Your $100K salary in Sioux Falls (COL 88) has the same purchasing power as $115,909 in Flagstaff (COL 102). Flagstaff is more expensive — you'd need 16% 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 | Sioux Falls $100K | Flagstaff $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,321 | $6,113 |
| 1BR rent | $1,250 | $1,650 |
| Groceries | $365 | $384 |
| Transport | $42 | $45 |
| Utilities | $155 | $195 |
| Internet | $60 | $65 |
| Left after essentials | $4,449/month | $3,774/month |
Frequently asked questions
What is $100K in Sioux Falls equivalent to in Flagstaff?
$100K in Sioux Falls (COL index 88) has the same purchasing power as $115,909 in Flagstaff (COL index 102). That's 16% more than your current salary.
If I move from Sioux Falls to Flagstaff keeping my $100K salary, will I be better off?
Not necessarily. Core expenses in Flagstaff are higher, so on the same $100K salary you'd have $675 less per month. You'd need to earn $115,909 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 × (102 ÷ 88) = $115,909. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Sioux Falls to Flagstaff
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only