By state · ME

National Parks in Maine.

By Nicholas Major · Last updated

Maine has Acadia National Park as its NPS flagship (the only National Park in the northeastern United States) plus Saint Croix Island, Roosevelt-Campobello (jointly with New Brunswick, Canada), and Katahdin Woods and Waters National Monument. Bangor (BGR) and Portland (PWM) are the main anchor airports; Bar Harbor's local airport (BHB) operates seasonally. Acadia covers most of Mount Desert Island plus parcels on the Schoodic Peninsula and Isle au Haut. The park's busiest months are July and August; foliage peak runs early to mid-October when crowds drop and the weather still holds. The Park Loop Road's one-way section is open from late April through November in normal years. Cadillac Mountain has a vehicle-reservation system in season; check the official NPS Acadia page for the current window.

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Maine map with place names

Maine National Parks map: labeled satellite map, showing 1 locations: Acadia
Maine's 1 designated National Park. Dots mark general locations, not entrances. This map does not show every NPS source record in the directory below. Map: National Sites Guide, CC BY 4.0.

Customize or download the Maine map. Change the names, pins and background, or download a ready-made PNG or SVG.

NPS source records in Maine.

Maine has 7 records in our combined NPS metadata and visitor-statistics registry: 2 National Monuments · 1 National Park · 1 National Scenic Trail · 1 Other · 1 International Park · 1 International Historic Site. This is a source-record count, not the Park Service's official system-unit census. Combined 5-year-average annual visits: 10,257,971 (multi-state units count their full visits in every state they touch, see methodology). The most-visited record is Appalachian National Scenic Trail at about 6.22M annual visits.

Map of the broader NPS source-record directory
Every National Park Service site in Maine, mapped. Each glowing marker is one site, placed at its real coordinates and colored by type. Select a marker for its yearly visits and a link, or use the filters to show or hide a group. 6 of 7 units are mapped here; long-distance trails and units centered in another state are in the table below.
National Park Service sites in Maine, mapped Interactive map of Maine showing the location of 6 National Park Service sites, colored by type: national parks, monuments and memorials, historic sites, recreation areas and seashores, rivers, trails and parkways, and other sites. It includes the National Park Acadia National Park. Each site is also listed with its yearly visits in the table below the map.

Marker positions are each unit's official NPS coordinates. State outline: U.S. Census cartographic boundary (public domain). Independent site, not affiliated with the National Park Service.

UnitDesignation5-yr avg visitsBusiest month
Appalachian National Scenic Trail National Scenic TrailAPPA 6,215,118 July
Acadia National Park National ParkACAD 3,992,045 August
Katahdin Woods and Waters National Monument National MonumentKAWW 38,036 February
Saint Croix Island International Historic Site International Historic SiteSACR 12,772 August
Frances Perkins National Monument National MonumentFRPE — —
Maine Acadian Culture —MAAC — —
Roosevelt Campobello International Park International ParkROCA — —

Methodology

Rows come from our combined NPS metadata and Visitor Use Statistics registry, not the Park Service's official census of 433 managed system units. Per-record visit counts come from the official NPS Visitor Use Statistics Data Package, 2025; the "5-year average visits" column is the mean of 2021-2025 Recreation Visits. Multi-state records are listed under every state they touch, and their full visit total appears in each state. Official National Park counts use the central 63-park classification rather than the source designation label alone. Independent site, not affiliated with the National Park Service.

Adjacent reading

Independence

Independent site. Not affiliated with or endorsed by the National Park Service. Data comes from the official NPS Visitor Use Statistics Data Package, 2025; editorial analysis is ours. The NPS Arrowhead and other NPS marks are not used.

Last updated · 2026-09-10