Gaithersburg, MD vs Potomac, MD

The cost of living difference between Gaithersburg, MD and Potomac, MD is dramatic. Gaithersburg is 33.3% cheaper than Potomac, a gap that translates to thousands of dollars per year in household expenses. Gaithersburg has a cost index of 139 while Potomac sits at 208, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

On the housing front, median rent in Gaithersburg is $2,008/month compared to $2,616/month in Potomac — a 23% difference. Home values follow the same pattern: Gaithersburg is more affordable at $484,500 median vs $1,105,900.

Median household income in Gaithersburg is $107,496 compared to $239,205 in Potomac (-55.1%). While Potomac is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Gaithersburg spend roughly 22.4% of their income on rent, more than the 13.1% in Potomac.

Climate-wise, Potomac is notably warmer with an average of 59.3°F compared to 55.7°F in Gaithersburg. Gaithersburg receives more rainfall at 43.2" per year compared to 41.8" in Potomac.