Poestenkill is located in east New York. Poestenkill is part of Rensselaer County. Poestenkill has 5.88 square miles of land area and 0.07 square miles of water area. As of 2010-2014, the total Poestenkill population is 969, which has shrunk 5.37% since 2000. The population growth rate is much lower than the state average rate of 3.26% and is much lower than the national average rate of 11.61%. Poestenkill median household income is $65,781 in 2010-2014 and has grown by 21.32% since 2000. The income growth rate is much lower than the state average rate of 35.25% and is lower than the national average rate of 27.36%. Poestenkill median house value is $203,900 in 2010-2014 and has grown by 103.09% since 2000. The house value growth rate is higher than the state average rate of 90.79% and is much higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Poestenkill is better than the state average in quality. The Poestenkill area code is 518.