Today Suffolk County, Islip NY is count around 1845 single-family homes for sale at current average listing price of $1,637,460. Nearby neighborhoods of Suffolk County are Hickory Hills, Oakhaven Estates, Chelsea, Country Village, Democratic Hill, Idle Hour, Lake Hills, Lakeland Woods, Maples Park, Prospect Plains. Most of Suffolk County single-family homes are 4 bedrooms with 3 bathrooms.