In 1993, Long Island seceded from the City of Portland to form its own independent town, comprising Long Island itself and several smaller islands.
A private barge service for vehicles and freight operates between East End Beach in Portland and the Boston Sand & Gravel ramp on Long Island. The lobster-fishing industry is a cornerstone of the island economy; although many islanders also commute to jobs on the mainland.
- Year-round population, 2010 U.S. Census: 230
- Summer population estimate: 1,000
- Acres: 805
- Mainland ferry terminal: Portland
- Estimated distance between mainland and island ferry docks: 4 miles
- Ferry service: Casco Bay Lines
- School: K–5 on island; students commute to Portland for grades 6-12
- Form of town government: Independent town