
Big Delta
- County:
- Copper River Census Area
- County Seat:
- No
- Area (mi²):
- 46.94
- State:
- Alaska
Big Delta is a CDP located in Copper River Census Area, Alaska. Big Delta has a 2025 population of 533. Big Delta is currently declining at a rate of -0.74% annually and its population has decreased by -14.99% since the most recent census, which recorded a population of 627 in 2020.
The average household income in Big Delta is $103,121 with a poverty rate of 0.46%. The median age in Big Delta is 29.7 years: 24.5 years for males, and 39.3 years for females.