Sinclairville is a city located in New York. With a 2020 population of 550, it is the 510th largest city in New York and the 12902nd largest city in the United States. Sinclairville is currently declining at a rate of -0.54% annually and its population has decreased by -6.46% since the most recent census, which recorded a population of 588 in 2010. Sinclairville reached it's highest population of 587 in 2010. Spanning over 2 miles, Sinclairville has a population density of 341 people per square mile.
The average household income in Sinclairville is $49,302 with a poverty rate of 23.84%. The median rental costs in recent years comes to $488 per month, and the median house value is $75,800. The median age in Sinclairville is 36.9 years, 35.5 years for males, and 37.7 years for females. For every 100 females there are 100.3 males.