Each edition grades its towns against each other only.
Most of Derma was built recently: 0.5% of its homes predate 1940 and the median home dates from 1979. Below: maps from 1954 on and the census since 1910.
The Derma post office opened in 1897, 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 Derma’s history is told.
Wikipedia doesn’t have a history of Derma yet. The photos, dates and memories neighbors add here are how it gets written.
Derma is a town in Calhoun County, Mississippi, United States. As of the 2020 census, Derma had a population of 957.
Its first post office opened in 1897. Between the 2010 and 2020 censuses its population fell from 1,025 to 957 (-7%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Woven from the archive, old maps, post office records, the National Register and the people born here.
Born hereGlenn Hardin is born here
On the mapFirst mapped by the U.S. Geological SurveyEvery edition of the U.S. Geological Survey’s map of Derma. 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 Derma.
Between 317 and 1,025 people in every census since 1910.
12 censuses, 1910–2020.
U.S. Census Bureau decennial counts, from the census table on Derma’s Wikipedia page.
Each neighbor’s History grade, on the same three inputs.
The Derma post office opened in 1897, 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 (2), Wikidata and Wikipedia for famous people, 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.
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