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1940s Maps of Mercer County, New Jersey

Explore 21 historic maps of Mercer County from the 1940s. These maps offer a rare glimpse into what life looked like during the 1940s — 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 Mercer County's landscape evolved across the 1940s, 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 1940s, 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 Mercer County's history through authentic maps from the 1940s. This is your window into the past.

Mercer County, NJ maps

(21)
  1. 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.
  4. 1942 Map of Burlington
    1942 Map of Burlington
    1942 Burlington
    1942 Print · USGS
    The Delaware River valley thrived at the start of the 1940s as a hub of heavy rail and river commerce. Genealogists and local historians can trace family-named sites and old transit points like Dunks Ferry, Borton Landing, and Neshaminy Falls.
  7. 1942 Map of Jamesburg
    1942 Map of Jamesburg
    1942 Jamesburg
    1942 Print · USGS
    Central New Jersey during the early 1940s reveals a network of rail-dependent boroughs and rural townships. Genealogists and historians can trace family locations near Old Church, identify the grounds of the Jamesburg State Reformatory, and locate vanished points like Bergen Mills.
  10. 1943 Map of Pennington
    1943 Map of Pennington
    1943 Pennington
    1943 Print · USGS
    The Delaware River borderlands between New Jersey and Pennsylvania are captured here during the Second World War. Genealogists and historians can trace riverside landmarks like Scudders Falls, old family hamlets like Bear Tavern, and the early footprint of Mercer Airport.
  13. 1943 Map of Rocky Hill
    1943 Map of Rocky Hill
    1943 Rocky Hill
    1943 Print · USGS
    Somerset County is captured here in the early 1940s, balancing its deep-rooted farming heritage with significant wartime and state institutions. Genealogists and historians can trace family-named sites across the Sourland Mountain Hills and locate the sprawling State Village for Epileptics or the War Aid Depot.
  16. 1943 Map of Lambertville
    1943 Map of Lambertville
    1943 Lambertville
    1943 Print · USGS
    The Delaware River valley at the height of the war years shows a landscape of busy canals, paper mills, and cross-river communities. Researchers can trace the industrial riverfront in Lambertville or locate family sites like the Thompson Memorial Cemetery and Fairfield School.
  19. 1944 Map of Jersey Homesteads
    1944 Map of Jersey Homesteads
    1944 Jersey Homesteads
    1944 Print · USGS
    Monmouth and Ocean counties appear here during the mid-forties, capturing a landscape of rural hamlets and small mills. Researchers can trace the New Deal-era Jersey Homesteads and find ancestral sites like Francis Mills, Carrs Tavern, and Perrineville.
  22. 1944 Map of Trenton West, 1950 Print
    1944 Map of Trenton West, 1950 Print
    1944 Trenton West
    1950 Print · USGS
    The Delaware River corridor near Trenton and Morrisville is captured here at the height of its mid-century rail and industrial era. Genealogists and historians can trace old property boundaries and landmarks from Fallsington to the landmark Wm Trent House 1719.
  25. 1944 Map of Newark, 1971 Print
    1944 Map of Newark, 1971 Print
    1944 Newark
    1971 Print · USGS
    The industrial corridor from Philadelphia to New York was in a period of massive transition during the mid-forties. Genealogists and researchers can trace the rail lines of the Lehigh Valley RR, locate military installations like Picatinny Arsenal, and explore the early sprawl near Levittown.
    5 unique versions available
  28. 1946 Map of Princeton, 1952 Print
    1946 Map of Princeton, 1952 Print
    1946 Princeton
    1952 Print · USGS
    Central New Jersey at the start of the post-war era reveals a landscape defined by its prestigious institutions and expanding rail corridors. Genealogists can locate family landmarks like Rosedale Chapel or trace the early grounds of the Lawrenceville School.
  31. 1947 Map of Monmouth Junction
    1947 Map of Monmouth Junction
    1947 Monmouth Junction
    1947 Print · USGS
    Central New Jersey in the late 1940s reveals a landscape of river-side canal towns and bustling rail hubs. Genealogists and local historians can trace the branching lines at Monmouth Junction and locate Washingtons Headquarters near Kingston.
  34. 1947 Map of Trenton West
    1947 Map of Trenton West
    1947 Trenton West
    1947 Print · USGS
    The Delaware River corridor near Trenton and Morrisville was a hive of rail and river activity just after the war. Genealogists and local historians can trace the foundations of Fallsington, locate the Wm Trent House 1719, and follow the Reading Company line through Woodside.
  37. 1947 Map of Trenton East
    1947 Map of Trenton East
    1947 Trenton East
    1947 Print · USGS
    Mercer County and the Delaware River waterfront are captured here just after the war as industrial hubs and suburban neighborhoods began to expand. Genealogists and historians can trace the foundations of Warner Village, locate the Bordentown Cemetery, or find the Pennsylvania Maritime Academy along the riverbank.
  40. 1947 Map of Roosevelt
    1947 Map of Roosevelt
    1947 Roosevelt
    1947 Print · USGS
    Central New Jersey's rural interior is captured here just after the war, showing the unique intersection of Monmouth, Mercer, and Ocean counties. Genealogists and local historians can trace family-named sites like Carrs Tavern, Holmeson, and the extensive Cranberry bogs near Prospertown.
    2 unique versions available
  43. 1947 Map of Jamesburg
    1947 Map of Jamesburg
    1947 Jamesburg
    1947 Print · USGS
    Middlesex County's rail-connected towns and crossroads settlements are captured here just after the war. Local researchers can trace the grounds of the Jamesburg State Reformatory, locate the old Monroe Sch, and explore vanished stop points like Matchaponix and Bergen Mills.
  46. 1948 Map of Roosevelt
    1948 Map of Roosevelt
    1948 Roosevelt
    1948 Print · USGS
    Monmouth County rural life is captured in the late 1940s, showing the early days of the Roosevelt colony and established hamlets. Genealogists can trace family landmarks and crossroads like Stone Tavern, Clarksburg, and the numerous Cranberry bogs near Prospertown.
  49. 1948 Map of Allentown
    1948 Map of Allentown
    1948 Allentown
    1948 Print · USGS
    Monmouth and Mercer counties meet here in the late 1940s, showing a landscape of established townships and crossroad settlements. Genealogists and local historians can trace family-named sites like Walnford, Nelsonville, and the East Windsor Cemetery.
    2 unique versions available
  52. 1948 Map of Trenton East, 1949 Print
    1948 Map of Trenton East, 1949 Print
    1948 Trenton East
    1949 Print · USGS
    Mercer County and its surroundings are documented here in the late 1940s as suburban expansion began to reshape the landscape. Local historians can trace the development of Warner Village and Hamilton Square or locate landmarks like the Pennsylvania Maritime Academy and Bordentown Cemetery.
  55. 1948 Map of Lakehurst, 1954 Print
    1948 Map of Lakehurst, 1954 Print
    1948 Lakehurst
    1954 Print · USGS
    Post-war central New Jersey comes to life here, showing the rural landscapes of Ocean and Monmouth counties before major suburbanization. Trace the footprints of the U S Naval Air Station and historic mill towns like Jacksons Mills and Cassville.
    2 unique versions available
  58. 1948 Map of Bordentown, 1954 Print
    1948 Map of Bordentown, 1954 Print
    1948 Bordentown
    1954 Print · USGS
    Central New Jersey stands at the crossroads of military expansion and early highway development in the years following the war. Genealogists and historians can trace the rural layouts of Bordentown and New Egypt or locate landmarks like Arneys Mount and the Pa Maritime Academy.
    2 unique versions available
  61. 1949 Map of Newark
    1949 Map of Newark
    1949 Newark
    1949 Print · USGS
    The industrial corridor between Philadelphia and New York comes alive in this post-war survey. Genealogists and historians can trace the massive rail networks of the Reading Railroad and locate major installations like Fort Dix or Picatinny Arsenal.
    2 unique versions available
End of results
Showing maps 1-21 of 21

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