The Portage Township post office opened in 1829, the earliest record of the town by name. Four smaller post offices, Mungen (1868), Sixpoints (1879) and Mermill (1884), opened inside today’s town and later closed.
First census: 304 in 18802020 census: 1,558197 years
How historic is Portage Township?
A−
More historic than 82% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Portage Township post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Portage Township’s History grade
On its age, its old homes and the National Register, Portage Township is more historic than 82% of U.S. towns. All 3 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.
A−
HistoryA character grade: shown, never part of Portage Township’s overall grade.
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 Portage Township’s 5.6 sits above most of its state (66% of Ohio towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B+ to A−. The pre-1940 share is a Census survey estimate (±7.0 points). The founding year is the first post office, not a stated founding date.
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 →
What stands out about Portage Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Portage Township. Tap a year, or press play to watch the town change.
1901Bowling Green sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Portage Township.
Portage was platted in 1836. The village takes its name from the nearby Portage River. A post office called Portage has been in operation since 1829. Portage was incorporated as a village in 1857.
The Portage Township post office opened in 1829, the earliest record of the town by name (U.S. post office records).
How does Portage Township rank for history?
Portage Township is more historic than 82% of U.S. towns. 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.
What is on the National Register in Portage Township?
One place: the William Graham House (listed 1984).
How old are the homes in Portage Township?
24% of Portage Township’s homes were built before 1940 (Census estimate, ±7.0 points), against a typical 15% for an Ohio town; the median home was built in 1972.
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 (5), the National Register of Historic Places (1), 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.