1900s (20th Century) Maps of Decatur, Illinois
Explore 17 historic maps of Decatur 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 Decatur'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 Decatur's history through authentic maps from the 1900s. This is your window into the past.
Decatur, IL maps
(17)- 1929 Map of Decatur, 1965 Print
1929 Decatur1965 Print · USGSCentral 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. - 1933 Map of Decatur
1933 Decatur1933 Print · USGSThe 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 - 1954 Map of Niantic, 1955 Print
1954 Niantic1955 Print · USGSMid-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 - 1958 Map of Decatur, 1971 Print
1958 Decatur1971 Print · USGSCentral 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 - 1961 Map of Decatur
1961 Decatur1961 Print · USGSCentral 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 - 1967 Map of Long Creek, 1968 Print
1967 Long Creek1968 Print · USGSMacon 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 - 1967 Map of Argenta, 1968 Print
1967 Argenta1968 Print · USGSMacon 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 - 1967 Map of Decatur, 1968 Print
1967 Decatur1968 Print · USGSDecatur 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 - 1967 Map of Forsyth, 1968 Print
1967 Forsyth1968 Print · USGSThe 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 - 1982 Map of Harristown, 1983 Print
1982 Harristown1983 Print · USGSMacon 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. - 1982 Map of Warrensburg, 1983 Print
1982 Warrensburg1983 Print · USGSWarrensburg 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. - 1985 Map of Decatur
1985 Decatur1985 Print · USGSCentral 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 - 1985 Map of Springfield
1985 Springfield1985 Print · USGSCentral 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 - 1998 Map of Decatur, 2000 Print
1998 Decatur2000 Print · USGSDecatur 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. - 1998 Map of Forsyth, 2001 Print
1998 Forsyth2001 Print · USGSMacon 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. - 1998 Map of Long Creek, 2002 Print
1998 Long Creek2002 Print · USGSMacon 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. - 1998 Map of Argenta, 2003 Print
1998 Argenta2003 Print · USGSThe 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.
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Top neighborhoods of Decatur
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