Lake Grove is a village in Suffolk County, New York, United States. The population was 10,250 at the 2000 census. The Village of Lake Grove is located in the Town of Brookhaven. Lake Grove is well known as a popular commercial area in Suffolk county, including stores and attractions such as the Smith Haven Mall, Trader Joe's, Ben's, Zan's, and other large chain stores including Steve and Barry's. Additional stores and attractions are located nearby in Nesconset, Stony Brook and South Setauket, including Costco, Borders Bookstore, an AMC Lowes movie theater, Target, Best Buy, and Home Depot. The village features a number of different styles and prices of housing, including many well-maintained developments such as Crestwood Forest, Lake Grove Estates, Country Pointe, The Pines, Brittany Hills, and Country Woods. The village also has a number of parks, recreational facilities, and a nature preserve for residents to enjoy. Some areas within the Lake Grove zip code, such as the Hathaway Oaks development and parts of the Brittany Hills development, are actually located in the unincorporated hamlets of Lake Ronkonkoma and Nesconset, within the towns of Brookhaven and Smithtown respectively.