- Location
- Hancock and Knox counties, Maine , United States
- Nearest city
- Bar Harbor
- Area
- 49,075 acres (198.60 km ), 861.46 acres (348.62 ha; 3.4862 km ) private (in 2017)
- Established
- July 8, 1916 (as Sieur de Monts National Monument ), February 26, 1919, (as Lafayette National Park ), January 19, 1929, (as Acadia National Park)
- Visitors
- 4,079,318 (in 2025)
- Governing body
- National Park Service
- Website
- nps .gov /acad