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Old Maps of Warren County, New Jersey for Metal Detecting

Plan your next treasure hunt with 142 historic maps of Warren County. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Warren County.

Warren County, NJ maps

(142)
  1. 1888 Map of Hackettstown
    1888 Map of Hackettstown
    1888 Hackettstown
    1888 Print · USGS
    Northwestern New Jersey in the late nineteenth century was a hub of transit and industry defined by the Morris Canal and competing rail lines. Genealogists and historians can trace old homesteads and industrial sites near Oxford Furnace, Waterloo, and Hackettstown.
  4. 1890 Map of Easton
    1890 Map of Easton
    1890 Easton
    1890 Print · USGS
    The Delaware River valley thrived as a transport hub during the 1890s, where three major canals and multiple railroads met at the Pennsylvania-New Jersey border. Genealogists and industrial historians can trace the paths of the Morris Canal, the works at Durham Furnace, and the strategic Musconetcong Tunnel.
  7. 1890 Map of High Bridge
    1890 Map of High Bridge
    1890 High Bridge
    1890 Print · USGS
    Hunterdon and Morris counties at the close of the nineteenth century are defined by their complex rail networks and dramatic ridges. Genealogists and historians can trace the early layouts of High Bridge, Clinton, and the settlements surrounding the distinct curve of Cushetunk Mountain.
    2 unique versions available
  10. 1891 Map of Easton
    1891 Map of Easton
    1891 Easton
    1891 Print · USGS
    The Delaware River valley thrived as a corridor of heavy industry and transit in the 1890s. Trace the path of historic waterways and early rail lines, including the Morris Canal, the ironworks at Durham Furnace, and rural crossroads like Still Valley.
    8 unique versions available
  13. 1891 Map of Wallpack
    1891 Map of Wallpack
    1891 Wallpack
    1891 Print · USGS
    The Delaware River valley and Kittatinny Mountain ridges define this late nineteenth-century borderland between Pennsylvania and New Jersey. Genealogists can locate historic river crossings like Dingmans Ferry and trace early rail lines including the Paulins Kill Railroad.
  16. 1891 Map of Delaware Water Gap
    1891 Map of Delaware Water Gap
    1891 Delaware Water Gap
    1891 Print · USGS
    The Delaware River corridor was a bustling industrial and transport hub in the late nineteenth century. Genealogists and historians can trace the region's slate mining roots at the Old Bangor Slate Quarry or locate historic river crossings like Myeres Ferry and Hartzells Ferry.
  19. 1893 Map of Delaware Water Gap
    1893 Map of Delaware Water Gap
    1893 Delaware Water Gap
    1893 Print · USGS
    The Delaware River borderlands between Pennsylvania and New Jersey are captured here in the late nineteenth century as the slate industry and railroads transformed the valley. Researchers can locate the Old Bangor Slate Quarry, trace the river crossings at Myeres Ferry, and explore old stops like Stone Church P. O.
    12 unique versions available
  22. 1893 Map of Wallpack
    1893 Map of Wallpack
    1893 Wallpack
    1893 Print · USGS
    The Delaware River valley and Kittatinny Mountain are captured here during the late nineteenth century, showing a landscape defined by ferries and early rail. You can trace old river crossings like Smiths Ferry or locate the rural post office at Peters Valley Bevans P.O. and the rail stop at Emmons Station.
    8 unique versions available
  25. 1894 Map of Hackettstown
    1894 Map of Hackettstown
    1894 Hackettstown
    1894 Print · USGS
    Northwestern New Jersey is captured here in the late nineteenth century as a hub of iron production and mountain railroading. Researchers can pinpoint early industrial sites like Oxford Furnace or trace the routes of the Morris and Essex Railroad and Lehigh and Hudson River Railroad.
  28. 1898 Map of Hackettstown
    1898 Map of Hackettstown
    1898 Hackettstown
    1898 Print · USGS
    Northwest New Jersey at the turn of the century is defined by its deep river valleys and the early railroads that pierced its ridge lines. Genealogists and historians can trace the foundations of Hackettstown or locate long-standing landmarks like Swayze Mills and Saxton Falls.
    2 unique versions available
  31. 1898 Map of High Bridge
    1898 Map of High Bridge
    1898 High Bridge
    1898 Print · USGS
    Hunterdon County is mapped in the late nineteenth century as a vital transportation corridor defined by the Cushetunk Mountain range. Genealogists and historians can trace the exact rail routes and rural hamlets of the era, from High Bridge and Glen Gardner to the Lehigh Valley Railroad.
    2 unique versions available
  34. 1900 Map of Raritan
    1900 Map of Raritan
    1900 Raritan
    1900 Print · USGS
    North Jersey in the late nineteenth century was a complex web of mountain ridges and vital rail corridors. Researchers can trace ancestral routes through old junctions like High Bridge, industrial sites at Mine Hill, and the shores of Lake Hopatcong.
  37. 1905 Map of Raritan
    1905 Map of Raritan
    1905 Raritan
    1905 Print · USGS
    Northern New Jersey's ridges and valleys are meticulously detailed here at the turn of the century. You can trace the complex rail networks of the Lehigh Valley R.R. and locate family landmarks from Swayze Mills to the Powder Depot near Picatinny Peak.
    2 unique versions available
  40. 1905 Map of High Bridge
    1905 Map of High Bridge
    1905 High Bridge
    1905 Print · USGS
    Hunterdon County at the opening of the twentieth century was a vital junction for New Jersey’s industrial rail lines and river-powered settlements. Researchers can trace the legacy tracks of the Central Railroad of New Jersey and locate early communities like High Bridge, Clinton, and Annandale.
    4 unique versions available
  43. 1905 Map of Hackettstown
    1905 Map of Hackettstown
    1905 Hackettstown
    1905 Print · USGS
    Warren and Morris Counties at the turn of the century show a landscape defined by industrial transport and river valleys. Researchers can trace the historic Morris Canal and the complex rail networks serving towns like Hackettstown, Vienna, and Oxford.
    5 unique versions available
  46. 1924 Map of Bushkill
    1924 Map of Bushkill
    1924 Bushkill
    1924 Print · USGS
    The Pennsylvania and New Jersey borderlands come to life in the mid-twenties, showing a landscape of small school districts and traditional river crossings. Researchers can locate family landmarks like Marshall Falls, trace the Delaware Lackawanna and Western rail line, and find old sites like Smoky Hill School.
  49. 1932 Map of Easton
    1932 Map of Easton
    1932 Easton
    1932 Print · USGS
    The Delaware River valley thrived as a corridor of industry and transport in the early 1930s, bridging Pennsylvania and New Jersey. Genealogists and historians can trace the legacy of early industry along the Morris Canal or locate local landmarks like St Josephs Ch and Mine Hill.
    5 unique versions available
  52. 1936 Map of Delaware Water Gap
    1936 Map of Delaware Water Gap
    1936 Delaware Water Gap
    1936 Print · USGS
    The Delaware River valley thrived in the mid-thirties as a critical junction for coal-hauling railroads and mountain tourism. Local historians can trace family roots through numerous rural landmarks like Spoke Factory Sch, Ross Cem, and Slateford Junction.
    4 unique versions available
  55. 1941 Map of Delaware Water Gap
    1941 Map of Delaware Water Gap
    1941 Delaware Water Gap
    1941 Print · USGS
    The Delaware River valley is captured here in the early 1940s, showing the borderlands of Pennsylvania and New Jersey. Genealogists can trace family names through dozens of rural landmarks like Three Church Hill, Brass Castle, and the Stone Church PO.
  58. 1942 Map of Delaware Water Gap
    1942 Map of Delaware Water Gap
    1942 Delaware Water Gap
    1942 Print · USGS
    The Delaware River gorge and its surrounding ridges come into focus during the early war years, highlighting a critical rail and river junction. Trace local history through family-named landmarks like Miller Ch, rural Quaker Plain Sch, and the unique name of Manunka Chunk.
    3 unique versions available
  61. 1943 Map of Bushkill
    1943 Map of Bushkill
    1943 Bushkill
    1943 Print · USGS
    Monroe County and the Delaware River valley are captured in the early 1940s during a time of rural persistence and local industry. Genealogists and historians can locate family landmarks like Dimicks Ferry, St Thomas Chapel, and the vanished sites of Craig Meadows.
    2 unique versions available
  64. 1943 Map of High Bridge
    1943 Map of High Bridge
    1943 High Bridge
    1943 Print · USGS
    Western New Jersey industrial and institutional corridors are meticulously mapped here during the early war years. Genealogists and historians can trace family locations near the NJ State Hospital or the Grobelis Farm, and identify vanished local landmarks like the Air Raid Station and Asbury Graphite Refinery.
  67. 1943 Map of Blairstown
    1943 Map of Blairstown
    1943 Blairstown
    1943 Print · USGS
    Warren County in the early 1940s shows a landscape of ridge-top forests and valley hamlets connected by the Delaware Lackawanna and Western. Researchers can locate the Hematite Mine, trace the historic campus of Blair Academy, or find local family sites near Swayzes Mills.
  70. 1943 Map of Bangor
    1943 Map of Bangor
    1943 Bangor
    1943 Print · USGS
    The slate and cement industries of the Pennsylvania-New Jersey border are captured in high detail at the height of wartime production. Genealogists and industrial historians can trace rail spurs to the Old Bangor Slate Quarry, locate the Middaghs PO, and find rural landmarks like Three Church Hill.
  73. 1943 Map of Portland
    1943 Map of Portland
    1943 Portland
    1943 Print · USGS
    The Delaware River valley was a bustling corridor of rail and river transit during the early years of the Second World War. Researchers can trace the paths of several major railroads, locate family sites like the Fairview Cemetery, and find old infrastructure such as the Myers Ferry and Hainesburg RR Sta.
    2 unique versions available
Showing maps 1-25 of 142

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Frequently asked questions

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