Each edition grades its towns against each other only.
More historic than 41% of U.S. towns · #746 of 993 in Ohio. What drives it
Most of Jerome Township was built recently: 6% of its homes predate 1940 and the median home dates from 2011. Below: 1 old photo or paper, maps from 1901 on, and the census since 1990.
The Jerome Township post office opened in 1848, the earliest record of the town by name. Three smaller post offices, Jerome (1848), New California (1850) and Arnold (1894), opened inside today’s town and later closed.
More historic than 41% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Jerome Township is more historic than 41% of U.S. towns, #746 of 993 in Ohio. Its age holds the grade up; its National Register listings pull it down.
Ohio towns list about as much on the Register as the country (a typical Ohio town has 2.9 per 10,000 residents, the U.S. 2.4), so Jerome Township’s 0.0 sits below most of its state (23% of Ohio towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
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 Jerome Township’s history is told.
Three other post offices opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Every edition of the U.S. Geological Survey’s map of Jerome 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 Jerome Township.
Wikipedia doesn’t have a history of Jerome Township yet. The photos, dates and memories neighbors add here are how it gets written.
Jerome Township is one of the fourteen townships of Union County, Ohio, United States. The 2020 census found 9,504 people in the township.
Its first post office opened in 1848. Between the 2010 and 2020 censuses its population grew from 7,541 to 9,504 (+26%).
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.
On the mapFirst mapped by the U.S. Geological Survey
In the archiveVelocys BiotechOne decade in the archive so far: the 1990s. Scroll each row; tap a photo for its story.
2016Glacier Ridge Metro Park 3
2016Glacier Ridge Metro Park 2
2016Glacier Ridge Metro Park 1
2015Map of Union County Ohio HighlightingMap
2009Harley Davidson
2009Cox Colvin Environmental Services
2009Centurion complex
2009ArnoldOhioSign
2009Analysis Technologies
2007OHMap-doton-New California
2007Jerome Township DevelopmentGrew from 3,462 people in 1990 to 9,504 in 2020.
4 censuses, 1990–2020.
U.S. Census Bureau decennial counts, from the census table on Jerome Township’s Wikipedia page.
Nobody well known was born in Jerome Township itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
The Jerome Township post office opened in 1848, the earliest record of the town by name (U.S. post office records).
Jerome Township is more historic than 41% of U.S. towns, #746 of 993 in Ohio. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
6% of Jerome Township’s homes were built before 1940 (Census estimate, ±2.2 points), against a typical 15% for an Ohio town; the median home was built in 2011.
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).
From Wikimedia Commons (12), 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.
