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1900s (20th Century) Maps of Knox County, Maine

Explore 72 historic maps of Knox County from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.

Whether you're researching your family's past, planning a metal detecting trip, or studying how Knox County's landscape evolved across the 1900s, these high-resolution maps are a powerful tool for exploring the history of this region.

  • Focus on a specific era: All maps on this page are from the 1900s, giving you a focused view of this time period.
  • See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
  • Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
  • View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.

Start exploring Knox County's history through authentic maps from the 1900s. This is your window into the past.

Knox County, ME maps

(72)
  1. 1904 Map of Deer Isle
    1904 Map of Deer Isle
    1904 Deer Isle
    1904 Print · USGS
    The Maine coast in the early nineteen-hundreds is defined by its network of island settlements and steamboat paths. Genealogists and historians can trace family locations from Stonington to Isle au Haut, or locate maritime landmarks like Deer I. Thorofare L.H. and The Haulover.
    4 unique versions available
  4. 1904 Map of Swan Island
    1904 Map of Swan Island
    1904 Swan Island
    1904 Print · USGS
    The granite shores of Hancock County appear here at the turn of the century, showing a network of island villages and maritime routes. Trace the old foundations and landing sites at Frenchboro and Minturn, or locate the Bluehill Bay L.H. and early steamboat paths.
    4 unique versions available
  7. 1904 Map of Vinalhaven
    1904 Map of Vinalhaven
    1904 Vinalhaven
    1904 Print · USGS
    The Fox Islands and Penobscot Bay are captured here at a maritime peak, when steamboats and granite quarries drove the local economy. Researchers can trace historic ferry paths and find family landmarks like Coombs Hill, Browns Head L.H., and the settlement at North Haven.
    4 unique versions available
  10. 1904 Map of Monhegan, 1958 Print
    1904 Map of Monhegan, 1958 Print
    1904 Monhegan
    1958 Print · USGS
    The Maine coast near Muscongus Bay is captured here during the heyday of coastal steamboats and lighthouse keepers. Genealogists and historians can trace families across Louds Island, Bremen Long Island, and the remote fishing community on Monhegan.
  13. 1904 Map of Tenants Harbor, 1960 Print
    1904 Map of Tenants Harbor, 1960 Print
    1904 Tenants Harbor
    1960 Print · USGS
    Coastal Maine at the turn of the century reveals a seafaring landscape shaped by granite islands and protected harbors. Genealogists and historians can trace old coastal settlements like Martinsville and Elmore or navigate the intricate Muscle Ridge Channel.
  16. 1904 Map of Rockland, 1961 Print
    1904 Map of Rockland, 1961 Print
    1904 Rockland
    1961 Print · USGS
    Coastal Knox County comes alive in this early twentieth-century survey of the harbor towns and the rocky Penobscot Bay shoreline. Trace the routes of the Maine Central RR and ELECTRIC lines to historic settlements like Blackinton Corners and Sharkeyville.
  19. 1905 Map of Penobscot Bay
    1905 Map of Penobscot Bay
    1905 Penobscot Bay
    1905 Print · USGS
    The Maine coastline at the dawn of the twentieth century was a bustling network of maritime trade and summer retreats. Genealogists and historians can trace the foundations of coastal life through the STEAMBOAT ROUTE, the Northport Camp Ground, and settlements like Sargentville.
    3 unique versions available
  22. 1906 Map of Matinicus
    1906 Map of Matinicus
    1906 Matinicus
    1906 Print · USGS
    Coastal Maine's most remote island communities are captured at the beginning of the twentieth century. Researchers can trace the early footprints of Matinicus and Criehaven, locate the Matinicus Rock LH, and follow the old Steamboat Route.
    4 unique versions available
  25. 1906 Map of Tennant Harbor
    1906 Map of Tennant Harbor
    1906 Tennant Harbor
    1906 Print · USGS
    The coastal waters of Knox County were a bustling corridor for maritime trade in the early 1900s. Genealogists and historians can trace the foundations of Tennant Harbor and Martinsville, while mapping the precise locations of offshore hazards like Roaring Bull and Metinic Island.
    4 unique versions available
  28. 1906 Map of Monhegan
    1906 Map of Monhegan
    1906 Monhegan
    1906 Print · USGS
    The Maine coast at the turn of the century reveals a seafaring landscape of island outposts and sheltered harbors. Trace early maritime routes and family-named landmarks from Port Clyde to the isolated Monhegan Island.
    5 unique versions available
  31. 1906 Map of Rockland
    1906 Map of Rockland
    1906 Rockland
    1906 Print · USGS
    Coastal Knox County comes alive in the first decade of the century, showing a bustling network of harbors and early transit systems. Genealogists and historians can trace family roots through crossroads like Blackinton Corners or investigate the old Wattons Mill and the Electric RR lines.
    7 unique versions available
  34. 1913 Map of Waldoboro
    1913 Map of Waldoboro
    1913 Waldoboro
    1913 Print · USGS
    Coastal Lincoln and Knox counties come alive in this pre-war survey, showing a landscape of tightly-knit villages and rural school districts connected by the river and rail. Researchers can trace ancestral footprints at the Old Dutch Church, Winslows Mills, and the Benners Corner Cem.
    2 unique versions available
  37. 1915 Map of Waldoboro
    1915 Map of Waldoboro
    1915 Waldoboro
    1915 Print · USGS
    Coastal Lincoln County is surveyed here in the early twentieth century, showing a landscape defined by tidal rivers and small farming hamlets. Genealogists can locate family-named sites like Flanders Corner and rural institutions such as the Branch School and Broad Cove PO.
    5 unique versions available
  40. 1915 Map of Belfast, 1962 Print
    1915 Map of Belfast, 1962 Print
    1915 Belfast
    1962 Print · USGS
    Mid-coast Maine at the start of the twentieth century shows a landscape of busy harbor towns and high-altitude farms. Genealogists can trace family names across dozens of rural landmarks, from Holmes Mill and Simpsons Corner to the numerous remote schoolhouses like Bartlett School.
  43. 1916 Map of Liberty
    1916 Map of Liberty
    1916 Liberty
    1916 Print · USGS
    Mid-coast Maine at the start of the Great War was a patchwork of small townships and family farmsteads connected by narrow-gauge rails. Researchers can locate dozens of country schools and named crossroads such as The Kingdom, Hibberts Gore, and Woodmans Mills.
    6 unique versions available
  46. 1917 Map of Belfast
    1917 Map of Belfast
    1917 Belfast
    1917 Print · USGS
    Coastal Waldo County hummed with maritime trade and small-scale milling during the years before the Great War. Researchers can trace ancestral property near Head of the Tide, locate district schoolhouses like Woods School, or follow the Maine Central Railroad into Belfast.
    6 unique versions available
  49. 1941 Map of Belfast
    1941 Map of Belfast
    1941 Belfast
    1941 Print · USGS
    Coastal Waldo County at the start of the 1940s reveals a landscape of tidal rivers and bustling rural crossroads. Genealogists and historians can trace family locations through numerous landmarks like Allens Hall, Holmes Mill, and the Belfast & Moosehead Lake RR corridor.
  52. 1941 Map of Rockland
    1941 Map of Rockland
    1941 Rockland
    1941 Print · USGS
    The Knox County shoreline during the early 1940s features a detailed look at maritime life and coastal industry. Genealogists and historians can trace the foundations of Rockland, locate the Rockland Breakwater Lighthouse, and explore villages like South Thomaston and Wattons Mill.
  55. 1941 Map of Waldoboro
    1941 Map of Waldoboro
    1941 Waldoboro
    1941 Print · USGS
    The Medomak River valley and its surrounding coastal hills are captured here just as the war began. You can trace early twentieth-century rail connections at Glendon Station, find family-named crossroads like Whitney Corner, and locate local landmarks such as Winslows Mills.
  58. 1941 Map of Vinalhaven, 1962 Print
    1941 Map of Vinalhaven, 1962 Print
    1941 Vinalhaven
    1962 Print · USGS
    Penobscot Bay is captured in high detail during the early 1940s, showing the intricate island communities of the Fox Islands. Researchers can trace family sites near Seaview Cem, locate maritime landmarks like Heron Neck L H, and explore the geography of Hurricane Island.
    3 unique versions available
  61. 1942 Map of Liberty
    1942 Map of Liberty
    1942 Liberty
    1942 Print · USGS
    Waldo and Lincoln County lands are documented here just before mid-century, showing a landscape of rural schools and family-named corners. Genealogists can trace property near Hibberts Gore or locate ancestral homesites near Handy Sch and Montville Post Office.
  64. 1942 Map of Deer Isle, 1958 Print
    1942 Map of Deer Isle, 1958 Print
    1942 Deer Isle
    1958 Print · USGS
    Coastal Maine life in the 1940s centers on the granite industry and maritime trade routes throughout Deer Isle and the Penobscot Bay islands. Genealogists and historians can trace the foundations of local economies through the QUARRIES at Stonington and the many family-named landmarks like Greenlaw Neck or Conary Head.
    3 unique versions available
  67. 1943 Map of Swans Island, 1958 Print
    1943 Map of Swans Island, 1958 Print
    1943 Swans Island
    1958 Print · USGS
    Coastal Hancock County at the height of the Second World War reveals a landscape of isolated island communities and maritime commerce. Genealogists and historians can trace family roots through the settlements of Atlantic, Minturn, and Frenchboro, or locate landmarks like the Blue Hill Bay LH and Little Duck I Bird Sanctuary.
    3 unique versions available
  70. 1944 Map of Vinalhaven
    1944 Map of Vinalhaven
    1944 Vinalhaven
    1944 Print · USGS
    The Fox Islands of Maine are captured here during the 1940s, showing the intricate island-and-bay network of Penobscot Bay. Genealogists can trace early family sites like Fuller Cem and Browns Cem or locate maritime landmarks such as Browns Head LH.
    2 unique versions available
  73. 1944 Map of Deer Isle
    1944 Map of Deer Isle
    1944 Deer Isle
    1944 Print · USGS
    Penobscot Bay and the Eggemoggin Reach appear here in the early 1940s, highlighting the granite and maritime hubs of the Maine coast. Genealogists and historians can locate family homes near Stonington, coastal Quarries, and landmarks like Forest Cem.
    2 unique versions available
Showing maps 1-25 of 72

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Frequently asked questions

  • What are the different types of historical maps available for Knox County?
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