Longmeadow is a town in Hampden County, Massachusetts, United States. The population was 15,784 at the 2010 census.
Longmeadow is located in the western part of the state, just south of the city of Springfield, and is bordered on the west by the Connecticut River, to the east by East Longmeadow and to the south by Enfield, Connecticut. It extends approximately 3 miles (4.8 km) north to south and 2.5 miles (4.0 km) east to west. It is approximately 20 miles (32 km) north of Hartford. More than 30% of the town is permanent open space. Conservation areas on the west side of town include more than 750 acres (3.0 km2) bordering the Connecticut River. The area supports a wide range of wildlife including deer, beaver, wild turkeys, foxes, and eagles. Springfield's Forest Park (Springfield), which at 735 acres (2.97 km2) is the largest city park in New England, forms the northern border of the town. The private Twin Hills and public Franconia golf courses, plus town athletic fields and conservation land, cover nearly 2/3 of the eastern border of the town. Two large public parks, the Longmeadow Country Club, and three conservation areas account for the bulk of the remaining formal open space. Almost 20% of the houses in town are in proximity to a "dingle", a tree-lined steep sided sandy ravine with a wetland at the bottom that provides a privacy barrier between yards. Longmeadow has a town common located along U.S. Route 5, on the west side of town. It is about 0.75-mile (1.2 kilometers) long. Roughly 100 houses date back before 1900, most of which are in the historic district near the town green. Houses along the photogenic main street are set back farther than in most towns of similar residential density. The town has three recently remodeled elementary schools, two secondary schools, and one high school. The commercial center of town is an area called "The Longmeadow Shops," including restaurants and clothing stores.
As of the census of 2000, there were 15,633 people, 5,734 households, and 4,432 families residing in the town. The population density was 1,732.5 inhabitants per square mile (668.9/km2). There were 5,879 housing units at an average density of 651.5 per square mile (251.5/km2).