Can I Afford to Live in Washington vs Rapid City on $120K?
Here's how a $120K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.
Monthly budget breakdown
| Expense | Washington DC | Rapid City SD |
|---|---|---|
| Monthly take-home (est.) | $6,575 | $7,155 |
| 1BR rent | $3,100 | $1,200 |
| Groceries (est.) | $422 | $365 |
| Transport (est.) | $100 | $40 |
| Utilities | $190 | $148 |
| Internet | $75 | $65 |
| Left after essentials | $2,688/month | $5,337/month |
Frequently asked questions
Is $120K a good salary in Washington?
At $120K/year in Washington, your estimated monthly take-home is $6,575. With 1BR rent around $3,100/month, rent takes up 47% of your take-home. That's considered difficult.
Is $120K a good salary in Rapid City?
At $120K/year in Rapid City, your estimated monthly take-home is $7,155. With 1BR rent around $1,200/month, rent takes up 17% of your take-home. That's considered very comfortable.
Which city is more affordable on a $120K salary?
Rapid City leaves you with more money after core expenses — $5,337/month vs $2,688/month in Washington.
Can I afford to live alone in Washington on $120K?
It's tight. Rent in Washington would take 47% of your $120K take-home pay. You may need to find roommates or look at studios to stay within the 30% rule.
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