How Altamont Township came to be
From Wikipedia’s history of Altamont Township.
Altamont was platted in 1880. It was named for the hills surrounding the town site. The name means "high mountain."
Text from Wikipedia, licensed CC BY-SA 4.0.
Each edition grades its towns against each other only.
Below: maps from 1973 on and the census since 1910.
Altamont Township dates its founding to 1880 (Wikipedia’s history). The census first counted it in 1910.
Altamont Township was named for the hills surrounding the town site.
The name means "high mountain."
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 Altamont Township’s history is told.
Peaked at 144 in 1940; 32 people lived here in 2020.
12 censuses, 1910–2020.
U.S. Census Bureau decennial counts, from the census table on Altamont Township’s Wikipedia page.
From Wikipedia’s history of Altamont Township.
Altamont was platted in 1880. It was named for the hills surrounding the town site. The name means "high mountain."
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.
On the mapFirst mapped by the U.S. Geological SurveyEvery edition of the U.S. Geological Survey’s map of Altamont Township. 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 Altamont Township.
Nobody well known was born in Altamont Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
In 1880, according to Wikipedia’s history of the town. the census of 1910 counted 110 people here.
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 and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
1973Clear Lake North sheet · 1:24,000