
Vienna
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 2.922
- State:
- New Jersey
Vienna is a CDP located in Warren County, New Jersey. Vienna has a 2025 population of 712. Vienna is currently declining at a rate of -2.47% annually and its population has decreased by -30.06% since the most recent census, which recorded a population of 1,018 in 2020.
The average household income in Vienna is $275,241 with a poverty rate of 1.17%. The median age in Vienna is 43 years: 35.4 years for males, and 45.7 years for females.