1900s (20th Century) Maps of Marengo, Illinois
Explore 12 historic maps of Marengo 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 Marengo'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 Marengo's history through authentic maps from the 1900s. This is your window into the past.
Marengo, IL maps
(12)- 1932 Map of Harvard
1932 Harvard1932 Print · USGSNorthern Illinois and the Wisconsin borderlands are captured here in the early 1930s, centered on the rail hub of Harvard. Genealogists can locate dozens of named rural schools like Hoppen School and Shields School, or trace the path of the Chicago and Northwestern Electric (Abandoned) line.3 unique versions available - 1937 Map of Harvard
1937 Harvard1937 Print · USGSUpper Illinois and the Wisconsin borderlands are shown here in the mid-1930s, centered on the bustling rail junction at Harvard. Genealogists can trace family footprints across dozens of country schoolhouse sites like White Oak Sch and the rural cemeteries of Dunham township.2 unique versions available - 1938 Map of Genoa
1938 Genoa1938 Print · USGSNorthern Illinois farm country and rail junctions thrive in the late 1930s across the borders of De Kalb and McHenry counties. Genealogists can locate dozens of rural landmarks, from North Kingston Cem and Ney Ch to many local schools like Genoa Center Sch.3 unique versions available - 1954 Map of Rockford
1954 Rockford1954 Print · USGSThe Rock River valley and the Illinois-Wisconsin borderlands are captured here in the mid-1950s during a period of robust industrial and agricultural activity. Genealogists and historians can trace rail-era corridors like the Illinois Central RR and locate landmarks from Big Foot Prairie to Lake Geneva. - 1955 Map of Rockford
1955 Rockford1955 Print · USGSThe Rock River valley and southern Wisconsin dairy country are shown here in the mid-fifties as the region's manufacturing centers grew. Genealogists and historians can trace the paths of the Chicago and North Western RR and Illinois Central RR through hubs like Rockford and Beloit. - 1958 Map of Rockford, 1974 Print
1958 Rockford1974 Print · USGSNorthern Illinois and southern Wisconsin are shown here in the mid-twentieth century as rail-dependent industrial towns began to interface with growing lakefront communities. Genealogists can trace family roots through settlements like Saylesville and Tess Corners or locate historical landmarks like the Rockford Ordnance Depot.4 unique versions available - 1963 Map of Rockford
1963 Rockford1963 Print · USGSThe mid-century industrial corridor along the Rock River is shown here during a period of rapid post-war growth. Researchers can trace the extensive rail lines of the Chicago and North Western or locate local landmarks like the Rockford Ordnance Depot and Holy Hill. - 1968 Map of Marengo South, 1970 Print
1968 Marengo South1970 Print · USGSIn the late sixties, the rural borderlands of McHenry, DeKalb, and Kane Counties were undergoing change as modern highways intersected old rail lines. Genealogists and local historians can trace family-named roads and sites like Coral Cem, Union Ch, and the Tollgate near Harmony.2 unique versions available - 1968 Map of Riley, 1970 Print
1968 Riley1970 Print · USGSIn the late sixties, this agricultural landscape at the junction of three counties remained centered on family farms and country roads. Researchers can locate specific sites like the No 10 School, Barber Cem, and the Grange Hall near the village of Riley.2 unique versions available - 1970 Map of Marengo North, 1972 Print
1970 Marengo North1972 Print · USGSMcHenry County's farm country comes into focus in the early 1970s, showing the rural townships as they transitioned toward modern development. Genealogists and local historians can trace family road names and locate burial sites like Sacred Heart Cem and Nelson County Cem.2 unique versions available - 1970 Map of Garden Prairie, 1972 Print
1970 Garden Prairie1972 Print · USGSThe rural borderlands of Boone and McHenry counties are documented here in the early seventies. Genealogists and historians can trace family locations through several burial sites like Stone School Cemetery and local landmarks such as Kishwaukee School and Geryune. - 1981 Map of Elgin
1981 Elgin1981 Print · USGSNorthern Illinois and southern Wisconsin are shown in the early eighties as suburban growth meets glacial terrain. Trace the paths of the Milwaukee Road through Harvard or explore the wetlands of Volo Bog State Natural Area.
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