$100K in Durham = $80,392 in Mobile
Your $100K salary in Durham (COL 102) has the same purchasing power as $80,392 in Mobile (COL 82). Mobile is cheaper — your money goes 20% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Durham $100K | Mobile $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,946 | $5,904 |
| 1BR rent | $1,750 | $1,100 |
| Groceries | $372 | $353 |
| Transport | $82 | $38 |
| Utilities | $155 | $172 |
| Internet | $62 | $58 |
| Left after essentials | $3,525/month | $4,183/month |
Frequently asked questions
What is $100K in Durham equivalent to in Mobile?
$100K in Durham (COL index 102) has the same purchasing power as $80,392 in Mobile (COL index 82). That's 20% less than your current salary.
If I move from Durham to Mobile keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to Mobile, you'd have $658 more per month after core expenses — because Mobile is cheaper than Durham.
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 × (82 ÷ 102) = $80,392. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Durham to Mobile
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only