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1900s (20th Century) Maps of Smithtown, New York

Explore 41 historic maps of Smithtown 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 Smithtown'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 Smithtown's history through authentic maps from the 1900s. This is your window into the past.

Smithtown, NY maps

(41)
  1. 1901 Map of Northport, 1962 Print
    1901 Map of Northport, 1962 Print
    1901 Northport
    1962 Print · USGS
    The North Shore of Long Island is captured here at the turn of the century, showing a landscape defined by deep harbors and maritime navigation. You can trace the early rail routes of the Long Island RR and locate historic coastal landmarks like Eatons Neck L.H. and Fort Salonga.
  4. 1902 Map of Setauket, 1959 Print
    1902 Map of Setauket, 1959 Print
    1902 Setauket
    1959 Print · USGS
    Suffolk County’s north and south shores are captured here at the start of the twentieth century. Researchers can trace the Port Jefferson Branch rail lines, the grounds of the State Hospital, and the early layout of Setauket and Bohemia.
  7. 1903 Map of Northport
    1903 Map of Northport
    1903 Northport
    1903 Print · USGS
    The North Shore of Long Island at the turn of the century reveals a landscape defined by deep harbors and the expanding railroad. Genealogists and historians can trace the early layouts of Northport and Huntington, or locate landmarks like Eaton Neck L.H. and Kings Park.
    8 unique versions available
  10. 1904 Map of Setauket
    1904 Map of Setauket
    1904 Setauket
    1904 Print · USGS
    Suffolk County at the start of the century shows a North Shore landscape of maritime villages and inland rail depots. Genealogists can trace family names and institutions from Stony Brook to the State Hospital For The Insane and Patchogue.
    7 unique versions available
  13. 1904 Map of Islip
    1904 Map of Islip
    1904 Islip
    1904 Print · USGS
    Suffolk County at the start of the century reveals a landscape defined by deep north-shore harbors and the expansive Great South Bay. Genealogists and local historians can trace early rail lines through Kings Park and Stony Brook, or locate the sprawling State Hospital and St. Dominic Convent.
    5 unique versions available
  16. 1919 Map of Setauket
    1919 Map of Setauket
    1919 Setauket
    1919 Print · USGS
    Long Island's north and south shores meet in this post-war tactical survey, documenting the transition from maritime villages to rail-linked townships. Genealogists and researchers can trace early century landmarks like the State Hospital for the Insane and the original Setauket Sta.
  19. 1920 Map of Bridgeport
    1920 Map of Bridgeport
    1920 Bridgeport
    1920 Print · USGS
    Coastal Connecticut comes alive in the early twentieth century as a hub of maritime commerce and industrial growth. Researchers can trace the development of Bridgeport and Milford, or locate specific landmarks like Charles Island and Beardsley Park.
  22. 1942 Map of Islip, 1943 Print
    1942 Map of Islip, 1943 Print
    1942 Islip
    1943 Print · USGS
    Central Suffolk County is shown during the early years of the war, as the automobile began to reshape the distance between historic North Shore harbors and the South Shore bays. Researchers can trace the path of the Long Island Motor Parkway, locate family plots at Pinelawn Cem, and identify coastal landmarks like Eaton Neck L H.
  25. 1947 Map of St James
    1947 Map of St James
    1947 St James
    1947 Print · USGS
    The North Shore of Long Island is captured here in the years following the war, featuring the intricate tidal marshlands of Smithtown Bay. Genealogists and historians can trace the grounds of the Kings Park State Hospital for the Insane and the residential clusters at St. James and Stony Brook.
    2 unique versions available
  28. 1947 Map of Northport
    1947 Map of Northport
    1947 Northport
    1947 Print · USGS
    Northport and the surrounding North Shore communities are captured in the late 1940s during a period of significant growth. Researchers can trace family estates and local institutions from the W K Vanderbilt Estate to the Northport Rural Cem and St Josephs Ch & Sch.
  31. 1947 Map of Central Islip
    1947 Map of Central Islip
    1947 Central Islip
    1947 Print · USGS
    Suffolk County is captured in the mid-1940s as institutional grounds and early aviation hubs began to reshape the Long Island interior. Researchers can trace the sprawling grounds of the Central Islip State Hospital and the early layout of Islip Airport.
  34. 1947 Map of Patchogue
    1947 Map of Patchogue
    1947 Patchogue
    1947 Print · USGS
    Central Suffolk County is documented just after the war, showing the distinct village identities of the south shore and the rural interior. Trace local genealogy and property development through the street grids of Patchogue, Bohemia, and the rail-oriented Ronkonkoma.
  37. 1947 Map of Sherwood Point
    1947 Map of Sherwood Point
    1947 Sherwood Point
    1947 Print · USGS
    Coastal Connecticut at the end of the 1940s reveals a shoreline of growing seaside communities and preserved marshlands. Researchers can trace the development of Saugatuck Shores, the historic Compo Beach, and the offshore reaches of Cockenoe Island.
  40. 1947 Map of Greenlawn
    1947 Map of Greenlawn
    1947 Greenlawn
    1947 Print · USGS
    Mid-century Suffolk County is captured here during its transition from an estate-dotted landscape to a growing suburban corridor. Genealogists and local historians can trace legacy properties like the Anna Gould Estate and early industry such as the Golden Pickle Works or Pilgrim Sand & Gravel Co.
  43. 1947 Map of Hartford, 1955 Print
    1947 Map of Hartford, 1955 Print
    1947 Hartford
    1955 Print · USGS
    Southern New England and the Hudson Valley are shown in detail during the post-war expansion era. Genealogists and researchers can trace local landmarks from the State Capitol and Yale University to the Stratford Lighthouse and Woodlawn Cem.
    2 unique versions available
  46. 1948 Map of Hartford
    1948 Map of Hartford
    1948 Hartford
    1948 Print · USGS
    Southern New England is captured here in the late 1940s, showcasing a landscape of thriving industrial cities and developing parkways. Genealogists and historians can trace the rail networks of the New York New Haven and Hartford RR or locate coastal defense sites like Fort Terry and Camp Shanks.
    2 unique versions available
  49. 1949 Map of New York, 1951 Print
    1949 Map of New York, 1951 Print
    1949 New York
    1951 Print · USGS
    Long Island and its surrounding waters are documented here in the late 1940s, just as the postwar suburban boom began to transform the region. Genealogists and historians can trace the early layouts of Idlewild Airport, Mitchell Field, and the established routes of the Long Island RR.
  52. 1951 Map of Sherwood Point, 1952 Print
    1951 Map of Sherwood Point, 1952 Print
    1951 Sherwood Point
    1952 Print · USGS
    The Connecticut coast at the start of the 1950s shows a landscape of growing seaside neighborhoods and maritime heritage. Genealogists and local historians can trace family-named landmarks from Hale Court and Compo Hills to the shores of Sherwood Millpond.
    4 unique versions available
  55. 1954 Map of New York
    1954 Map of New York
    1954 New York
    1954 Print · USGS
    Long Island and the New York metropolitan area are shown during the height of post-war suburbanization. Genealogists and historians can trace the growth of Levittown, the infrastructure of the Long Island Rail Road, and landmarks like Mitchel Afb.
    2 unique versions available
  58. 1954 Map of Northport, 1955 Print
    1954 Map of Northport, 1955 Print
    1954 Northport
    1955 Print · USGS
    Northport and the surrounding harbors are shown during the post-war growth of the mid-fifties. Genealogists and local historians can trace the development of East Northport, find family plots at Skidmore Cem, and locate the Central State Hosp.
    2 unique versions available
  61. 1954 Map of Greenlawn, 1956 Print
    1954 Map of Greenlawn, 1956 Print
    1954 Greenlawn
    1956 Print · USGS
    Western Suffolk County is shown here in the mid-fifties as suburban grids begin to surround massive institutional grounds and parkways. Genealogists can trace family burial sites like Buffett Cem and Carll Cem or locate the Deer Park Airport and Pilgrim State Hospital.
    2 unique versions available
  64. 1955 Map of Saint James, 1963 Print
    1955 Map of Saint James, 1963 Print
    1955 Saint James
    1963 Print · USGS
    Coastal Suffolk County shows its mid-century character as the residential corridors of Saint James and Stony Brook expand. Researchers can trace the grounds of Kings Park State Hospital, find early family sites like Wheeler Cem, or locate the Civil Air Patrol Landing Strip near the harbor.
  67. 1956 Map of Central Islip, 1957 Print
    1956 Map of Central Islip, 1957 Print
    1956 Central Islip
    1957 Print · USGS
    Mid-century Suffolk County is captured here during a period of massive suburban expansion along the central Island. Researchers can trace the massive footprints of the Central Islip State Hospital, locate family plots in Calvary Cem, or follow the early routes of the Long Island Motor Parkway.
    2 unique versions available
  70. 1956 Map of Patchogue, 1958 Print
    1956 Map of Patchogue, 1958 Print
    1956 Patchogue
    1958 Print · USGS
    Mid-century Suffolk County comes alive in this survey of the central Long Island corridor from the South Shore to the Ronkonkoma hills. Researchers can trace the mid-century footprint of Mac Arthur Airport or locate family history at Holy Sepulchre Cem and Medford Station.
    2 unique versions available
  73. 1956 Map of Setauket, 1961 Print
    1956 Map of Setauket, 1961 Print
    1956 Setauket
    1961 Print · USGS
    Mid-century central Suffolk County is captured here during a period of significant suburban growth and institutional prominence. Researchers can trace the massive grounds of Central Islip State Hospital, locate the St James Cem, or explore the maritime layout of Port Jefferson.
Showing maps 1-25 of 41

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Frequently asked questions

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