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Old Maps of Mercer County, New Jersey for Genealogy

Trace your family roots with 132 historic maps of Mercer 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 Mercer County's past.

Mercer County, NJ maps

(132)
  1. 1888 Map of Bordentown
    1888 Map of Bordentown
    1888 Bordentown
    1888 Print · USGS
    Central New Jersey in the 1880s was a bustling corridor of river commerce and intersecting rail lines. Genealogists and local historians can trace the early footprints of Bordentown, locate the junctions of the Pennsylvania Railroad, and find rural settlements like Recklesstown and Arneytown.
  4. 1888 Map of New Brunswick
    1888 Map of New Brunswick
    1888 New Brunswick
    1888 Print · USGS
    Middlesex County in the 1880s is shown here as a bustling hub of early rail and river industry. Genealogists and local historians can trace family roots through historic settlements like Old Bridge, Jamesburgh, and the preserved Monmouth Battle Ground.
  7. 1888 Map of Princeton
    1888 Map of Princeton
    1888 Princeton
    1888 Print · USGS
    Central New Jersey in the late nineteenth century is defined here by its critical canal and rail corridors connecting thriving agricultural villages. Genealogists and historians can trace family-named sites and early junctions like Grover's Mill, Griggstown, and the rail hub at Monmouth Junction.
  10. 1888 Map of Cassville
    1888 Map of Cassville
    1888 Cassville
    1888 Print · USGS
    Coastal New Jersey's interior pine and mill country is captured here during the 1880s, long before modern highways reshaped the region. Genealogists and local historians can trace the foundations of old family-named sites like Collier's Mills, Vanhiseville, and the Butterfly Bridge.
  13. 1890 Map of Lambertville
    1890 Map of Lambertville
    1890 Lambertville
    1890 Print · USGS
    The Delaware River valley thrived at the end of the nineteenth century as a hub for both canal and rail transport. Genealogists can trace family names and legacy sites near Lambertville, Washington's Crossing, and the junctions at Ringoes.
  16. 1890 Map of Burlington
    1890 Map of Burlington
    1890 Burlington
    1890 Print · USGS
    The Delaware River corridor was a thriving network of canal commerce and rail lines in the late nineteenth century. Genealogists and historians can trace family-named landings and early settlements like Dunks Ferry, Hulmeville, and the State Lunatic Asylum near Trenton.
  19. 1891 Map of Lambertville
    1891 Map of Lambertville
    1891 Lambertville
    1891 Print · USGS
    The Delaware River valley in the late 1880s is captured here at the height of the canal and rail era. Genealogists and historians can trace the early footprints of Lambertville, the course of the Delaware and Raritan Canal Feeder, and crossroads like Ringoes.
  22. 1893 Map of Bordentown
    1893 Map of Bordentown
    1893 Bordentown
    1893 Print · USGS
    Central New Jersey in the late nineteenth century was a bustling corridor of rail lines and established river towns. Genealogists and historians can trace the early footprints of Bordentown, Hamilton Square, and the various branches of the Pennsylvania Railroad.
    3 unique versions available
  25. 1893 Map of New Brunswick
    1893 Map of New Brunswick
    1893 New Brunswick
    1893 Print · USGS
    Middlesex and Monmouth counties were thriving rail hubs in the 1890s, where heavy industry met Revolutionary history. Genealogists and collectors can trace family roots through small settlements like Texas and Spotswood or locate the State Reform School and Monmouth Battle Ground.
    2 unique versions available
  28. 1893 Map of Burlington
    1893 Map of Burlington
    1893 Burlington
    1893 Print · USGS
    The Delaware River valley thrived as a corridor of rail and river commerce in the late nineteenth century. Genealogists and historians can trace defunct transport hubs like Dunks Ferry, explore the grounds of the State Lunatic Asylum, and locate old stops along the Philadelphia and Newtown Railroad.
    3 unique versions available
  31. 1894 Map of Princeton
    1894 Map of Princeton
    1894 Princeton
    1894 Print · USGS
    Central New Jersey is captured here in the late nineteenth century as its river-and-canal economy transitioned to a powerhouse of rail travel. Genealogists and historians can trace the early footprints of Princeton, the industrial Delaware and Raritan Canal, and rural stops like Grover Mill.
    2 unique versions available
  34. 1894 Map of Cassville
    1894 Map of Cassville
    1894 Cassville
    1894 Print · USGS
    The interior of Monmouth and Ocean Counties is revealed here in the late nineteenth century, showing a landscape defined by water-powered industry. Researchers can trace the heritage of old milling hubs like Jackson Mills and Collier Mills or the rail lines of the New Jersey Southern Railroad.
  37. 1894 Map of Lambertville
    1894 Map of Lambertville
    1894 Lambertville
    1894 Print · USGS
    The Delaware River valley was a thriving hub of 19th-century commerce, where twin canals and the Belvidere Division railroad powered local industry. Researchers can trace ancestral lands through numerous family-named landmarks like Muirheads and Larison Corner, or locate the exact 1890s footprints of Lambertville and Hopewell.
    4 unique versions available
  40. 1900 Map of Cassville
    1900 Map of Cassville
    1900 Cassville
    1900 Print · USGS
    Monmouth and Ocean Counties appear at the turn of the century, showing a landscape defined by water-powered milling and early rail transport. Genealogists can trace family names at Lahaway Plantations, Carrs Tavern, and through the many mills including Colliers Mill.
    3 unique versions available
  43. 1901 Map of New Brunswick
    1901 Map of New Brunswick
    1901 New Brunswick
    1901 Print · USGS
    Middlesex and Monmouth counties are depicted here at the height of the railroad era, as industrial centers like New Brunswick grew alongside rural farmlands. Genealogists and historians can trace family-named landmarks and old hamlets from Old Church and Matchaponix to the site of the Monmouth Battle Ground.
    5 unique versions available
  46. 1902 Map of Navesink
    1902 Map of Navesink
    1902 Navesink
    1902 Print · USGS
    Coastal New Jersey and the Raritan valley are shown here at the turn of the century, when industrial hubs and maritime defenses defined the shoreline. Genealogists can trace family roots through settlements like Old Bridge and Milltown, or locate local landmarks like the State Reform School.
    3 unique versions available
  49. 1904 Map of Burlington, 1958 Print
    1904 Map of Burlington, 1958 Print
    1904 Burlington
    1958 Print · USGS
    The Delaware River corridor thrives during the early twentieth century as a hub of rail, canal, and river commerce. Genealogists and local historians can trace family roots through riverside landings like Borton Landing or follow the legacy of institutions such as the George School and the State Lunatic Asylum.
  52. 1906 Map of Lambertville
    1906 Map of Lambertville
    1906 Lambertville
    1906 Print · USGS
    The Delaware River valley in the early 1900s is shown in transition, where water-borne trade meets the expanding rail network. Genealogists and historians can trace family-named corners like Vanlieu Corners and Marshalls Corner alongside the Delaware and Raritan Canal.
    6 unique versions available
  55. 1906 Map of Burlington
    1906 Map of Burlington
    1906 Burlington
    1906 Print · USGS
    The Delaware River corridor was a bustling hub of rail and water transport in the early 1900s. Genealogists and local historians can trace the development of riverside wharves like Andalusia Wharf and institutional landmarks such as the State Lunatic Asylum.
    6 unique versions available
  58. 1906 Map of Bordentown
    1906 Map of Bordentown
    1906 Bordentown
    1906 Print · USGS
    The Delaware River corridor and Burlington County interior are seen here in the early 1900s, showing a landscape shaped by rail and river commerce. Genealogists can trace early homesteads and hamlets near Bordentown, Hamilton Square, and the mills at Walnford.
    6 unique versions available
  61. 1906 Map of Princeton
    1906 Map of Princeton
    1906 Princeton
    1906 Print · USGS
    New Jersey’s educational and transportation corridors are captured here in the early twentieth century, showing a landscape defined by canals and competing rail lines. Genealogists can trace family roots through settlements like Princeton, Rocky Hill, and Plainsboro.
    4 unique versions available
  64. 1907 Map of Trenton
    1907 Map of Trenton
    1907 Trenton
    1907 Print · USGS
    The Delaware River valley hums with turn-of-the-century industry and transport as river canals and railroads converge between New Jersey and Pennsylvania. Genealogists and local historians can trace the footprint of the George School, find early post offices like Holland PO, or locate old mill sites such as Blackwells Mills.
    4 unique versions available
  67. 1918 Map of Camp Dix
    1918 Map of Camp Dix
    1918 Camp Dix
    1918 Print · USGS
    New Jersey at the height of the Great War features the sprawling mobilization grounds of Camp Dix and its expansive Rifle Range. Genealogists and historians can trace defunct stops like Imlaystown Sta or locate family roots near New Egypt and Colliers Mill.
    2 unique versions available
  70. 1919 Map of New Brunswick, 1921 Print
    1919 Map of New Brunswick, 1921 Print
    1919 New Brunswick
    1921 Print · USGS
    Middlesex and Monmouth counties are depicted here in the years following the Great War, when rail lines and river commerce still drove the region’s growth. Researchers can trace the sprawling Pennsylvania Railroad network through industrial hubs like Jamesburg or visit the hallowed Monmouth Battle Ground.
  73. 1942 Map of Hightstown
    1942 Map of Hightstown
    1942 Hightstown
    1942 Print · USGS
    Central New Jersey during the early years of the war displays a unique blend of scholarly institutions and agricultural hamlets. Researchers can trace the development of Hightstown and Plainsboro, or locate sites like Grovers Mills and the Peddie Prep Sch.
Showing maps 1-25 of 132

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