Maine County Maps: Interactive History & Complete List

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County Map of Maine
Map of Maine county boundaries and county seats

Maps of Maine are an invaluable area of family history research, notably in the case that you live far from where your ancestor resided.

Since Maine’s political boundaries have often changed over the years, historic maps are important when it comes to discovering the exact location of your ancestor’s hometown, what land they owned, just who their neighbors were, and much more besides.

Maps of Maine are an excellent resource for getting started with your own research, given that they provide valuable information and facts instantly, and then present them in a clear and understandable format.

The largest cities in Maine are Portland, Lewiston, Bangor, South Portland, Auburn, Biddeford, Sanford, Brunswick, Augusta, and Scarborough.

Learn more historical facts about Maine counties here.

Interactive Map of Maine County Formation History

AniMap Plus 3.0, with the permission of the Goldbug Company

List of Every Maine County

Androscoggin County

Established in 1854, Androscoggin County has a population of approximately 108,000. The county seat is Auburn and the largest city is Lewiston. It is named after the Androscoggin River.

Aroostook County

Aroostook County is the largest county in Maine, with a population of around 67,000. It was established in 1839 and its county seat is Houlton. The county is known for its vast forests and potato fields.

Cumberland County

With approximately 295,000 residents, Cumberland County is Maine’s most populous county. It was founded in 1760 and its county seat is Portland, the largest city in Maine.

Franklin County

Established in 1838, Franklin County is home to around 29,000 people. Its county seat is Farmington, a small college town. The county is celebrated for its scenic beauty and outdoor recreation opportunities.

Hancock County

Hancock County was founded in 1789 and has a population of approximately 54,000. Its county seat is Ellsworth and the largest city is Bar Harbor, a popular tourist destination on Mount Desert Island.

Kennebec County

Kennebec County is home to around 122,000 people and was founded in 1799. Its county seat is Augusta, the state capital, and the largest city is Waterville. The county contains many historic sites, including the Old Fort Western.

Knox County

Established in 1860, Knox County has a population of approximately 39,000. Its county seat is Rockland, a coastal city famous for its lobster festival. The county is also home to many historic lighthouses.

Lincoln County

Lincoln County was founded in 1760 and has around 34,000 residents. Its county seat is Wiscasset, a historic town on the Sheepscot River. The county is much loved for its coastal villages and maritime heritage.

Oxford County

With a population of approximately 57,000, Oxford County was established in 1805. Its county seat is Paris and the largest city is Norway. The county is home to many ski resorts and outdoor recreation opportunities.

Penobscot County

Penobscot County has a population of around 152,000 and was founded in 1816. Its county seat is Bangor, the third-largest city in Maine. The county is valued for its natural beauty and is home to Baxter State Park and the Penobscot River.

Piscataquis County

Established in 1838, Piscataquis County has around 16,000 residents. Its county seat is Dover-Foxcroft, a small town on the Piscataquis River. The county is notable for its wilderness areas and outdoor recreation opportunities.

Sagadahoc County

Sagadahoc County was founded in 1854 and has a population of approximately 36,000. Its county seat is Bath, a historic shipbuilding city on the Kennebec River. The county is also home to the Popham Beach State Park.

Somerset County

Somerset County is home to around 51,000 people and was established in 1809. Its county seat is Skowhegan, a town on the Kennebec River. The county is celebrated for its lakes and rivers, including Moosehead Lake and the Kennebec River.

Waldo County

Established in 1827, Waldo County has a population of approximately 40,000. Its county seat is Belfast, a coastal city known for its art galleries and seafood restaurants. The county is also home to Penobscot Bay.

Washington County

Washington County is the easternmost county in Maine, with a population of around 31,000. It was established in 1789 and its county seat is Machias. The county is famous for its rugged coastline and blueberry farms.

York County

With approximately 209,000 residents, York County is Maine’s second-most populous county. It was founded in 1636 and its county seat is Alfred. The county is much loved for its beaches and historic towns, including Kennebunkport and Ogunquit.

Old Antique Atlases & Maps of Maine

Disclaimer: All Maine maps are free to use for your own genealogical purposes and may not be reproduced for resale or distribution.

Source: David Rumsey Historical Map Collection

  • 1776 Maine Map

    1776 Maine Map

    1776 Maine, Massachusetts and New Hampshire Map

  • 1795 Map of Maine

    1795 Map of Maine

  • 1804 Maine Map

    1804 Maine Map

  • 1814 Atlas Map of Maine

    1814 Atlas Map of Maine

  • 1822 Map of Maine

    1822 Map of Maine

    1822 Geographical, Historical, And Statistical Atlas Map Of Maine

  • 1827 Map of Maine, New Hampshire, and Vermont

    1827 Map of Maine, New Hampshire, and Vermont

  • 1836 Atlas Map of Maine

    1836 Atlas Map of Maine

  • 1845 Maine Map

    1845 Maine Map

  • 1856 Maine Map

    1856 Maine Map

  • 1880 Map of Maine

    1880 Map of Maine

    1880 County map of the state of Maine. (with) Portland Har. and vicinity

Maine Map Links

Caleb Pike
About the author

Caleb Pike is an avid hiker and nature lover, with a passion for exploring the great outdoors. He's a writer, photographer, and adventurer, always seeking new trails to blaze and peaks to conquer.