Black River is a city located in New York. With a 2020 population of 1,260, it is the 383rd largest city in New York and the 9376th largest city in the United States. Black River is currently declining at a rate of -0.16% annually and its population has decreased by -6.53% since the most recent census, which recorded a population of 1,348 in 2010. Black River reached it's highest population of 1,402 in 2012. Spanning over 2 miles, Black River has a population density of 707 people per square mile.
The average household income in Black River is $75,195 with a poverty rate of 8.43%. The median rental costs in recent years comes to $870 per month, and the median house value is $176,500. The median age in Black River is 36.9 years, 35.1 years for males, and 39.4 years for females. For every 100 females there are 107.9 males.