Ronkonkoma is located in southeast New York. Ronkonkoma is part of Suffolk County. Ronkonkoma has 7.83 square miles of land area and 0.33 square miles of water area. As of 2010-2014, the total Ronkonkoma population is 18,978, which has shrunk 5.25% 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%. Ronkonkoma median household income is $86,432 in 2010-2014 and has grown by 28.35% since 2000. The income growth rate is lower than the state average rate of 35.25% and is about the same as the national average rate of 27.36%. Ronkonkoma median house value is $341,200 in 2010-2014 and has grown by 107.29% 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 Ronkonkoma is better than the state average in quality. The Ronkonkoma area code is 631.