Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1830.The full story ↓
History grade
What drives Salem Township’s History grade
On its age, its old homes and the National Register, Salem Township is more historic than 89% of U.S. towns, #161 of 993 in Ohio. 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 Salem 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 Salem Township’s 5.9 sits above most of its state (67% of Ohio towns have fewer) while its 3 listings outnumber those of 65% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from A− to A. The pre-1940 share is a Census survey estimate (±4.7 points). Two sources give 1806.
Founding year: Wikidata (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 Salem Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
On the map
Salem Township on the map, 1909 to 1971
Every edition of the U.S. Geological Survey’s map of Salem Township. Tap a year, or press play to watch the town change.
1909Lisbon 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 Salem Township.
Timeline
Salem Township, 1806 to 1929
Woven from the archive, old maps, post office records, the National Register and the people born here.
Salem was founded in 1806 by Zadok Street, a New Jersey clockmaker; and John Straughan, a Pennsylvanian potter. The city was named after Salem, New Jersey, Street's native community. The name Salem itself is a biblical derivative of Jerusalem in the Middle East, which means "city of peace". The city's early settlers included the Religious Society of Friends, also known as Quakers, which the local school district's sports teams honor by referring to themselves collectively as the Salem Quakers. Salem was incorporated in 1830.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
In 1806, according to Wikidata and Wikipedia’s history of the town. Salem Township’s post office opened in 1830, and the census of 1840 counted 233 people here.
How does Salem Township rank for history?
Salem Township is more historic than 89% of U.S. towns, #161 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.
What is on the National Register in Salem Township?
3 listings: 1 structure.
How old are the homes in Salem Township?
33% of Salem Township’s homes were built before 1940 (Census estimate, ±4.7 points), against a typical 15% for an Ohio town; the median home was built in 1958.
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 (2), the Library of Congress (4), 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.