Each edition grades its towns against each other only.
Below: 1 old photo or paper, maps from 1912 on, and the census since 1960.
The Ohlman post office opened in 1876, the earliest record of the town by name.
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Ohlman’s history is told.
From Wikipedia’s history of Ohlman.
The village is named for Michael Ohlman, a Civil War captain of a Mississippi River steamboat. The settlement was located on the Chicago and Eastern Illinois Railroad.
Text from Wikipedia, licensed CC BY-SA 4.0.
Woven from the archive, old maps, post office records, the National Register and the people born here.
In the archiveOhlman, Illinois (1913)
On the mapFirst mapped by the U.S. Geological SurveyOne decade in the archive so far: the 1910s. Scroll each row; tap a photo for its story.
Every edition of the U.S. Geological Survey’s map of Ohlman. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Ohlman.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
1912Sheet 1 of 1Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Ohlman’s page.
Retake this view · +15Between 82 and 215 people in every census since 1960.
6 censuses, 1960–2020.
U.S. Census Bureau decennial counts, from the census table on Ohlman’s Wikipedia page.
Nobody well known was born in Ohlman itself, so here are the best known from just nearby.
The Ohlman post office opened in 1876, the earliest record of the town by name (U.S. post office records).
What the archives can’t tell you, neighbors can.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
