Each edition grades its towns against each other only.
Below: maps from 1961 on and the census since 1910.
Mount Ayr dates its founding to 1882 (Wikipedia’s history). The census first counted it in 1910.
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 Mount Ayr’s history is told.
From Wikipedia’s history of Mount Ayr.
Mount Ayr was laid out as a town in 1882 when the railroad was extended to that point. The town was named after Mount Airy, North Carolina, the native home of its founder. A post office has been in operation at Mount Ayr since 1886.
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 SurveyWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Every edition of the U.S. Geological Survey’s map of Mount Ayr. 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 Mount Ayr.
Between 117 and 231 people in every census since 1910.
12 censuses, 1910–2020.
U.S. Census Bureau decennial counts, from the census table on Mount Ayr’s Wikipedia page.
Nobody well known was born in Mount Ayr itself, so here are the best known from just nearby.
In 1882, according to Wikipedia’s history of the town. Mount Ayr’s post office opened in 1886, and the census of 1910 counted 231 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 Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
