Arapahoe County sales tax rate, Colorado
Quick answer
Combined sales tax in Arapahoe County runs 8% across the cities we cover, on top of Colorado's 2.9% state rate. The county share is a separate line from any city or special-district increment, which is why two addresses in the same county can pay different totals.
Cities in Arapahoe County
County share shown separately from the city and district layers.
| City | State | County | City + districts | Combined |
|---|---|---|---|---|
| Aurora | 2.9% | 0.25% | 4.85% | 8% |
Source: Colorado Department of Revenue · rates as published for 2026