55+ communities, or active adult communities, are residential areas designed for individuals aged 55 and older. These communities offer a lifestyle tailored to older adults, featuring low-maintenance housing and various amenities such as fitness centers, swimming pools, and walking trails. Social interaction is encouraged through organized events, hobby groups, and recreational activities. Many communities provide additional services like healthcare facilities, transportation, and dining options. Located in desirable climates and scenic areas, they offer a serene and enjoyable living environment. The primary goal is to foster a vibrant, supportive atmosphere where residents can enjoy their retirement years with a focus on health, wellness, and social connections.

The Delaware Valley is composed of several counties in Delaware, New Jersey, Maryland, and Pennsylvania, and contains a population of 5.8 million (as of the 2006 Census Bureau estimate). Philadelphia, being the region's major commercial, cultural, and industrial center, maintains a rather large sphere of influence that affects those counties that immediately surround it. The majority of the region's populace reside in Pennsylvania and New Jersey.