$40K in Philadelphia = $34,393 in Allentown
Your $40K salary in Philadelphia (COL 107) has the same purchasing power as $34,393 in Allentown (COL 92). Allentown is cheaper — your money goes 14% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Philadelphia $40K | Allentown $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,625 | $2,625 |
| 1BR rent | $2,000 | $1,400 |
| Groceries | $391 | $380 |
| Transport | $96 | $72 |
| Utilities | $160 | $172 |
| Internet | $65 | $63 |
| Left after essentials | -$87/month | $538/month |
Frequently asked questions
What is $40K in Philadelphia equivalent to in Allentown?
$40K in Philadelphia (COL index 107) has the same purchasing power as $34,393 in Allentown (COL index 92). That's 14% less than your current salary.
If I move from Philadelphia to Allentown keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Allentown, you'd have $625 more per month after core expenses — because Allentown is cheaper than Philadelphia.
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: $40K × (92 ÷ 107) = $34,393. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Philadelphia to Allentown
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only