$100K in Erie = $100,000 in Birmingham
Your $100K salary in Erie (COL 84) has the same purchasing power as $100,000 in Birmingham (COL 84). Birmingham is more expensive — you'd need 0% 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 | Erie $100K | Birmingham $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,063 | $5,904 |
| 1BR rent | $1,100 | $1,200 |
| Groceries | $365 | $357 |
| Transport | $60 | $40 |
| Utilities | $168 | $175 |
| Internet | $62 | $58 |
| Left after essentials | $4,308/month | $4,074/month |
Frequently asked questions
What is $100K in Erie equivalent to in Birmingham?
$100K in Erie (COL index 84) has the same purchasing power as $100,000 in Birmingham (COL index 84). That's 0% less than your current salary.
If I move from Erie to Birmingham keeping my $100K salary, will I be better off?
Not necessarily. Core expenses in Birmingham are higher, so on the same $100K salary you'd have $234 less per month. You'd need to earn $100,000 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 × (84 ÷ 84) = $100,000. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Erie to Birmingham
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only