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Old Maps of Jefferson County, New York for Genealogy

Trace your family roots with 335 historic maps of Jefferson County. These high-res maps reveal old neighborhoods, homesites, landmarks, and streets — helping you uncover where your ancestors lived and how the area evolved over time.

  • Explore historic neighborhoods: Identify where your relatives may have lived in the 1800s or 1900s.
  • Compare maps over time: Trace the changes in streets, buildings, and landmarks for multi-generational research.
  • Perfect for genealogy & ancestry research: Used by family historians and researchers to map out lineage and migration.

These maps are an incredible resource for exploring your personal connection to Jefferson County's past.

Jefferson County, NY maps

(335)
  1. 1893 Map of Sackets Harbor, 1963 Print
    1893 Map of Sackets Harbor, 1963 Print
    1893 Sackets Harbor
    1963 Print · USGS
    Jefferson County’s shoreline at the close of the 19th century reveals a landscape of vital military outposts and thriving rail-side villages. Genealogists can trace family roots through Greens Settlement and Thomas Settlement or locate ancestors at Madison Barracks and Adams Center.
  4. 1895 Map of Sacketts Harbor
    1895 Map of Sacketts Harbor
    1895 Sacketts Harbor
    1895 Print · USGS
    Jefferson County’s lakefront and military outposts are frozen in time during the late nineteenth century. Genealogists and historians can trace family land near Greens Settlement, locate the old Madison Barracks, or follow the Ogdensburg and Watertown R. R. through the hills.
    8 unique versions available
  7. 1895 Map of Stony Island
    1895 Map of Stony Island
    1895 Stony Island
    1895 Print · USGS
    Lake Ontario's eastern islands and Jefferson County shoreline are documented in the 1890s as critical navigation points. Maritimers and local historians can trace the positions of the Galloup Id. L.H. and Stony Point L.H. among islands like Stony Island.
    6 unique versions available
  10. 1895 Map of Pulaski
    1895 Map of Pulaski
    1895 Pulaski
    1895 Print · USGS
    Coastal Oswego and Jefferson Counties are captured here in the late 1800s, where the Salmon River meets the lake. Genealogists can trace family roots through settlements like Richland, Pulaski, and the lakeside Life Saving Station.
    8 unique versions available
  13. 1895 Map of Watertown
    1895 Map of Watertown
    1895 Watertown
    1895 Print · USGS
    Jefferson County in the 1890s centered on the industrial energy of the Black River and a complex web of iron rails. Genealogists and local researchers can trace historic crossroads such as Fields Settlement, Whitford Corner, and Burrs Mills.
  16. 1895 Map of Cape Vincent
    1895 Map of Cape Vincent
    1895 Cape Vincent
    1895 Print · USGS
    Upper New York and the Canadian border meet at the head of the St. Lawrence River during the peak of the steamboat era. Genealogists and historians can trace the Cape Vincent Branch railroad and locate early shoreline landmarks like Tibbetts Pt. L.H. and the village of Marysville.
    6 unique versions available
  19. 1898 Map of Watertown
    1898 Map of Watertown
    1898 Watertown
    1898 Print · USGS
    Jefferson County at the close of the nineteenth century centers on the growing hub of Watertown and its intricate rail network. Researchers can trace the nineteenth-century landscape of rural hamlets, mills, and family landmarks like Burrs Mills, Honeyville, and Fields Settlement.
    2 unique versions available
  22. 1900 Map of Clayton, 1957 Print
    1900 Map of Clayton, 1957 Print
    1900 Clayton
    1957 Print · USGS
    The Thousand Islands region and the St. Lawrence riverfront are captured here at the turn of the century, showing a landscape defined by steam and rail. Genealogists can trace family roots in CLAYTON, Chaumont, and Depauville, or follow the path of the Electric R.R. near Dexter.
  25. 1902 Map of Carthage
    1902 Map of Carthage
    1902 Carthage
    1902 Print · USGS
    Upper New York at the turn of the century shows a landscape of river-powered industry and sprawling hill farms. Genealogists can trace family names and old crossroads from Champion Huddle to Gardners Corners, while rail historians can follow the R. W. and O. Div. through the Black River valley.
  28. 1903 Map of Grindstone
    1903 Map of Grindstone
    1903 Grindstone
    1903 Print · USGS
    The Thousand Islands at the turn of the century are captured here along the international border as steamboat traffic flourished. Genealogists and historians can trace old resort landings like Thousand Island Park and Fineview or locate several distinct river beacons including Rock I. L.H. and Lindoe L.H..
    4 unique versions available
  31. 1903 Map of Clayton
    1903 Map of Clayton
    1903 Clayton
    1903 Print · USGS
    Jefferson County's Thousand Islands region and Lake Ontario shoreline are documented here just after the turn of the century. Genealogists and historians can trace the rail lines connecting Clayton and Chaumont, or locate old post offices in Depauville and Rosiere.
    6 unique versions available
  34. 1903 Map of Alexandria Bay
    1903 Map of Alexandria Bay
    1903 Alexandria Bay
    1903 Print · USGS
    The Thousand Islands region appears here at the turn of the century as a burgeoning summer retreat along the international border. Genealogists and local historians can trace the early layouts of Alexandria Bay, the rail corridor through Redwood, and numerous island landings like Collins Landing.
    6 unique versions available
  37. 1903 Map of Theresa
    1903 Map of Theresa
    1903 Theresa
    1903 Print · USGS
    Jefferson County at the turn of the century was a bustling network of dairy farms and rail junctions. You can trace the path of the Rome Watertown and Ogdensburg Div. through Evans Mills or locate early settlements like Stone Mills and Leraysville.
    8 unique versions available
  40. 1903 Map of Orwell, 1955 Print
    1903 Map of Orwell, 1955 Print
    1903 Orwell
    1955 Print · USGS
    Oswego and Jefferson counties are documented here at the opening of the twentieth century, showing a landscape defined by the Tug Hill drainages. Genealogists and historians can trace the early footprints of Littlejohn Settlement, Otto Mills, and the falls at Stillwater.
  43. 1904 Map of Carthage
    1904 Map of Carthage
    1904 Carthage
    1904 Print · USGS
    Jefferson and Lewis Counties at the turn of the century show a landscape defined by the Black River valley and its busy rail lines. Genealogists can trace early homesteads in rural outposts like Champion Huddle, Windecker, and Gardners Corners.
    6 unique versions available
  46. 1905 Map of Orwell
    1905 Map of Orwell
    1905 Orwell
    1905 Print · USGS
    Upper Oswego and Jefferson counties are shown here in the early nineteen-hundreds as a landscape of remote settlements and river-powered valleys. Genealogists and historians can trace the exact locations of Little John Settlement, the Salmon Falls cataracts, and Bennett Bridge.
    6 unique versions available
  49. 1908 Map of Watertown, 1955 Print
    1908 Map of Watertown, 1955 Print
    1908 Watertown
    1955 Print · USGS
    Watertown and the rural uplands of the Tug Hill region are captured here in the early twentieth century as the railroad era peaked. Genealogists can trace early post offices like Klondike and Whitesville, or locate family sites near Brookside Cemetery.
  52. 1909 Map of Watertown
    1909 Map of Watertown
    1909 Watertown
    1909 Print · USGS
    Jefferson County was at its industrial and agrarian height in the early twentieth century, centered on the vital rail hub of Watertown. Local historians can trace family roots through the Middle Road Church or locate vanished post offices like Klondike Worth and Tylerville South Rutland.
    6 unique versions available
  55. 1911 Map of Antwerp
    1911 Map of Antwerp
    1911 Antwerp
    1911 Print · USGS
    Jefferson County was a landscape of bustling river towns and intersecting rail lines just after the turn of the century. Trace the early footprints of Antwerp and Sterlingville, or locate family landmarks like Bishops Corners and Woods Mill.
    6 unique versions available
  58. 1912 Map of Hammond
    1912 Map of Hammond
    1912 Hammond
    1912 Print · USGS
    The rural borderlands of St. Lawrence and Jefferson counties are captured here in the early twentieth century. Genealogists and historians can trace defunct district schools like California School and Stark School, or locate the Old Iron Works and rail stops at South Hammond Oakvale Sta.
    4 unique versions available
  61. 1913 Map of Lake Bonaparte, 1956 Print
    1913 Map of Lake Bonaparte, 1956 Print
    1913 Lake Bonaparte
    1956 Print · USGS
    The Lewis and Jefferson County borderlands come to life in this pre-World War I survey of the Lake Bonaparte region. Researchers can trace the old New York Central rail line past historic landmarks like Kimball Mill and the French Settlement School.
  64. 1916 Map of Lake Bonaparte
    1916 Map of Lake Bonaparte
    1916 Lake Bonaparte
    1916 Print · USGS
    Upper New York State at the dawn of the twentieth century shows a landscape defined by isolated settlements and a budding rail network. Researchers can trace the legacy of early families and industry through sites like Kimball Mill, Natural Bridge, and the French Settlement School.
    5 unique versions available
  67. 1942 Map of Stony Point
    1942 Map of Stony Point
    1942 Stony Point
    1942 Print · USGS
    The Jefferson County shoreline of Lake Ontario is captured here during the early years of World War II. Researchers can locate the Stony Point Light House and the extensive Stony Point Rifle Range along the coast of Henderson.
  70. 1942 Map of Cape Vincent North
    1942 Map of Cape Vincent North
    1942 Cape Vincent North
    1942 Print · USGS
    The international border along the Thousand Islands comes into sharp focus during the early 1940s. Genealogists and local historians can trace rural landmarks like Riverside Cem, School No 13, and the grounds of Burnham Pt State Park.
  73. 1942 Map of Henderson Bay
    1942 Map of Henderson Bay
    1942 Henderson Bay
    1942 Print · USGS
    Jefferson County’s shoreline comes alive in the early 1940s, highlighting the military presence at the historic Madison Barracks. Researchers can trace old lakeside schoolhouses and family cemeteries like Stone Cem or explore the waterfront detail near Sackets Harbor.
Showing maps 1-25 of 335

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