Can I Afford to Live in Naperville vs Cartagena on $100K?
Here's how a $100K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.
Monthly budget breakdown
| Expense | Naperville IL | Cartagena CO |
|---|---|---|
| Monthly take-home (est.) | $5,904 | $6,321 |
| 1BR rent | $1,650 | $560 |
| Groceries (est.) | $380 | $380 |
| Transport (est.) | $72 | $150 |
| Utilities | $158 | $70 |
| Internet | $62 | $30 |
| Left after essentials | $3,582/month | $5,131/month |
Frequently asked questions
Is $100K a good salary in Naperville?
At $100K/year in Naperville, your estimated monthly take-home is $5,904. With 1BR rent around $1,650/month, rent takes up 28% of your take-home. That's considered comfortable.
Is $100K a good salary in Cartagena?
At $100K/year in Cartagena, your estimated monthly take-home is $6,321. With 1BR rent around $560/month, rent takes up 9% of your take-home. That's considered very comfortable.
Which city is more affordable on a $100K salary?
Cartagena leaves you with more money after core expenses — $5,131/month vs $3,582/month in Naperville.
Can I afford to live alone in Naperville on $100K?
Yes. At $100K in Naperville, rent takes 28% of your take-home, leaving $3,582/month after essentials. Most financial planners recommend keeping rent below 30%.
See the full cost-of-living comparison
Rent, groceries, taxes, transportation, and more — side by side.
Take-home estimates use simplified federal/state brackets and do not account for pre-tax deductions, 401(k), or local taxes. Data: Zillow, BLS, Numbeo · Q1 2026 · For general guidance only