Each edition grades its towns against each other only.
Below: maps from 1887 on and the census since 1880.
Rockville Township dates its founding to 1868 (Wikidata and Wikipedia’s history agree). The census first counted it in 1880.
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 Rockville Township’s history is told.
Every edition of the U.S. Geological Survey’s map of Rockville 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 Rockville Township.
From Wikipedia’s history of Rockville Township.
Rockville was laid out in 1868. The city was named from local white sandstone quarries. A post office called Rockville has been in operation since 1871.
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.
Peaked at 580 in 1900; 135 people lived here in 2020.
15 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Rockville Township’s Wikipedia page.
Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
In 1868, according to Wikidata and Wikipedia’s history of the town. Rockville Township’s post office opened in 1871, and the census of 1880 counted 315 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) 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.
