Vienna, NJ has a population of 1,023 and is the 15,001st largest city in the United States. The population density is 350 per sq mi which is 34905% higher than the New Jersey average and 286% higher than the national average. The median age in Vienna is 41 which is approximately 5% higher than the New Jersey average of 40. In Vienna, 56% of the population over 15 years of age are married, 73% speak English and 18% speak Spanish. 64% of Vienna residents were born in New Jersey, 8% were born out of state, 1% were born outside of the United States and 27% were foreign born.