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Old Maps of Decatur, Illinois

Explore 47 old maps of Decatur, spanning from 1929 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.

What you can do with these maps:

  • See how Decatur changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
  • View detailed metadata: Each map includes creators, publishers, year, scale, and archive source.
  • Overlay maps with satellite & LiDAR: Visualize the past alongside modern tools to explore terrain & human change.
  • Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
  • Access maps your way: View online, download high-res files, or order prints for personal or research use.

Start exploring old maps of Decatur to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.

Decatur, IL maps

(47)
  1. 1929 Map of Decatur, 1965 Print
    1929 Map of Decatur, 1965 Print
    1929 Decatur
    1965 Print · USGS
    Central Illinois during the mid-twentieth century reveals a landscape defined by the expansion of Lake Decatur and a busy rail network. Researchers can trace dozens of rural schools like Blue Door Sch and landmarks including Decatur Airport.
  4. 1933 Map of Decatur
    1933 Map of Decatur
    1933 Decatur
    1933 Print · USGS
    The rail-and-river hub of Decatur is captured here in the early thirties, showing a landscape defined by industrial growth and rural school districts. Genealogists can trace family landmarks like Antioch Ch or dozens of local schoolhouses including Blue Door Sch and Mound Sch.
    3 unique versions available
  7. 1954 Map of Niantic, 1955 Print
    1954 Map of Niantic, 1955 Print
    1954 Niantic
    1955 Print · USGS
    Mid-century Macon County is defined here by its bustling rail corridors and the winding Sangamon River. Researchers can trace old family names at Lake Bank Cem or locate forgotten stops like Wyckles Corners and Bulldog Crossing.
    3 unique versions available
  10. 1958 Map of Decatur, 1971 Print
    1958 Map of Decatur, 1971 Print
    1958 Decatur
    1971 Print · USGS
    Central Illinois in the mid-twentieth century shows a landscape defined by industrial rail hubs and the creation of large reservoirs. Researchers can trace historic corridors like the Penn Central or locate landmarks such as Lincoln Log Cabin State Park and Lake Springfield.
    3 unique versions available
  13. 1961 Map of Decatur
    1961 Map of Decatur
    1961 Decatur
    1961 Print · USGS
    Central Illinois in the late fifties was a bustling corridor of rail lines and prairie commerce centered on the state capital. Genealogists and historians can trace the intricate connections between Springfield, Decatur, and dozens of smaller settlements like Nokomis and Arcola.
    2 unique versions available
  16. 1967 Map of Long Creek, 1968 Print
    1967 Map of Long Creek, 1968 Print
    1967 Long Creek
    1968 Print · USGS
    Macon County transitioned from heavy rail-and-river industry to suburban growth in the late sixties. Researchers can trace historic family burial sites at Ridge Cem, follow the Baltimore and Ohio tracks, or locate old schools like Salem Sch.
    2 unique versions available
  19. 1967 Map of Argenta, 1968 Print
    1967 Map of Argenta, 1968 Print
    1967 Argenta
    1968 Print · USGS
    Macon County's rural heartland is captured here in the late sixties, where the Sangamon River flows toward the expanding shoreline of Lake Decatur. Genealogists and local historians can locate several rural landmarks including the Oakley Brick Ch, Berry Sch, and the Friends Creek Cem.
    2 unique versions available
  22. 1967 Map of Decatur, 1968 Print
    1967 Map of Decatur, 1968 Print
    1967 Decatur
    1968 Print · USGS
    Decatur is shown at its mid-century industrial peak, dominated by a complex network of railroads and the rising waters of Lake Decatur. Researchers can locate specific sites from Millikin University to family plots in Graceland Cemetery and Greenwood Cemetery.
    2 unique versions available
  25. 1967 Map of Forsyth, 1968 Print
    1967 Map of Forsyth, 1968 Print
    1967 Forsyth
    1968 Print · USGS
    The northern reaches of the Decatur area are documented here during a period of steady mid-century growth. Genealogists and local historians can trace the development of Forsyth and Larkdale alongside landmarks like Boiling Springs Cem and the County Fairground.
    2 unique versions available
  28. 1982 Map of Harristown, 1983 Print
    1982 Map of Harristown, 1983 Print
    1982 Harristown
    1983 Print · USGS
    Macon County's rural landscape and the western expansion of Decatur are captured here in the early eighties. Genealogists and historians can trace family-named landmarks like Crum Cem and Whitley Cem alongside the winding Sangamon River.
  31. 1982 Map of Warrensburg, 1983 Print
    1982 Map of Warrensburg, 1983 Print
    1982 Warrensburg
    1983 Print · USGS
    Warrensburg and the surrounding townships of Illini and Austin are shown here in the early eighties as the railroad still anchored the local economy. Researchers can locate family landmarks like Illini Ch Cem, the Warrensburg-Latham Sch, and the small settlement of Bearsdale.
  34. 1985 Map of Decatur
    1985 Map of Decatur
    1985 Decatur
    1985 Print · USGS
    Central Illinois farming and rail hubs thrive in the mid-1980s as Decatur anchors a sprawling network of track and timber. Trace the paths of the Sangamon River and the Illinois Central Gulf RR through old towns like Cerro Gordo and Bement.
    2 unique versions available
  37. 1985 Map of Springfield
    1985 Map of Springfield
    1985 Springfield
    1985 Print · USGS
    Central Illinois during the mid-eighties shows a landscape of growing state capital influence and deep historical roots. Genealogists and historians can trace family sites near Oak Ridge Cem or follow the path of the Sangamon River past Williamsville and Riverton.
    2 unique versions available
  40. 1998 Map of Decatur, 2000 Print
    1998 Map of Decatur, 2000 Print
    1998 Decatur
    2000 Print · USGS
    Decatur and the shores of Lake Decatur appear in high detail during the late nineties, showcasing the city's complex rail and educational infrastructure. Genealogists can trace family landmarks at Graceland Cemetery or locate schools like Millikin University and St Teresa Academy.
  43. 1998 Map of Forsyth, 2001 Print
    1998 Map of Forsyth, 2001 Print
    1998 Forsyth
    2001 Print · USGS
    Macon County at the close of the twentieth century shows the steady northward growth of the Decatur area into traditional prairie farmland. Genealogists and local historians can trace neighborhood developments near Greens Switch and locate schools like Stephen Decatur High Sch.
  46. 1998 Map of Long Creek, 2002 Print
    1998 Map of Long Creek, 2002 Print
    1998 Long Creek
    2002 Print · USGS
    Macon County at the turn of the millennium shows a landscape shaped by suburban growth and conservation efforts near Mount Zion. Researchers can locate family landmarks like Point Pleasant Cem or trace the early paths of Big Creek.
  49. 1998 Map of Argenta, 2003 Print
    1998 Map of Argenta, 2003 Print
    1998 Argenta
    2003 Print · USGS
    The rural landscape of Macon County is captured here at the end of the century, showing the transition from traditional farming communities to the outskirts of the growing city. Genealogists can trace family names at Friends Creek Cem, Cross Cem, and Wheeler Cem, or locate landmarks like Berry Sch.
  52. 2012 Map of Harristown, 2012 Print
    2012 Map of Harristown, 2012 Print
    2012 Harristown
    2012 Print · USGS
    Covers Decatur, including Harristown, Boody, and other nearby areas
  55. 2012 Map of Decatur, 2012 Print
    2012 Map of Decatur, 2012 Print
    2012 Decatur
    2012 Print · USGS
    Covers Decatur, including Mount Zion, Long Creek, and other nearby areas
  58. 2012 Map of Long Creek, 2012 Print
    2012 Map of Long Creek, 2012 Print
    2012 Long Creek
    2012 Print · USGS
    Covers Decatur, including Mount Zion, Long Creek, and other nearby areas
  61. 2012 Map of Argenta, 2012 Print
    2012 Map of Argenta, 2012 Print
    2012 Argenta
    2012 Print · USGS
    Covers Decatur, including Oakley, Oreana, and other nearby areas
  64. 2012 Map of Forsyth, 2012 Print
    2012 Map of Forsyth, 2012 Print
    2012 Forsyth
    2012 Print · USGS
    Covers Decatur, including Forsyth, Oreana, and other nearby areas
  67. 2012 Map of Warrensburg, 2012 Print
    2012 Map of Warrensburg, 2012 Print
    2012 Warrensburg
    2012 Print · USGS
    Covers Decatur, including Warrensburg, Heman, and other nearby areas
  70. 2015 Map of Long Creek, 2015 Print
    2015 Map of Long Creek, 2015 Print
    2015 Long Creek
    2015 Print · USGS
    Covers Decatur, including Mount Zion, Long Creek, and other nearby areas
  73. 2015 Map of Forsyth, 2015 Print
    2015 Map of Forsyth, 2015 Print
    2015 Forsyth
    2015 Print · USGS
    Covers Decatur, including Forsyth, Oreana, and other nearby areas
Showing maps 1-25 of 47

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