Westerlo is a city located in New York. Westerlo has a 2020 population of 3,256. Westerlo is currently declining at a rate of -0.79% annually and its population has decreased by -3.12% since the most recent census, which recorded a population of 3,361 in 2010. Westerlo reached it's highest population of 3,390 in 2013.
The average household income in Westerlo is $94,899 with a poverty rate of 5.96%. The median rental costs in recent years comes to $839 per month, and the median house value is $185,900. The median age in Westerlo is 47.9 years, 45.5 years for males, and 51.5 years for females. For every 100 females there are 110.5 males.