The Mark Township post office opened in 1868, the earliest record of the town by name. Another post office, Mark (1868), opened inside today’s town and later closed.
2020 census: 902158 years
Founding year: the first Mark Township post office (Blevins & Helbock, CC0).
What stands out about Mark Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Mark Township yet. The photos, dates and memories neighbors add here are how it gets written.
Mark Township is one of the twelve townships of Defiance County, Ohio, United States. The 2020 census found 902 people in the township.
Its first post office opened in 1868. Its population held steady between the last two censuses: 908 in 2010, 902 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Mark Township in 1883
Passages that mention Mark Township, cut from the printed page as they were published.
History of Defiance County, Ohio1883 · page 29Read the page →
Read the text
Mark Township lies lower than any other township of the county. Platter Creek Marsh and Gordon Creek Marshes being mainly in this township, the artificial drainage, is extensive and systematic, and been reclaimed within the last decade. We find little clay in the township, and it is believed that in time this township will be the most productive in the county. The streams and drainage all tend to the
Text read by machine from the scan; it may contain errors.
History of Defiance County, Ohio1883 · page 321Read the page →
Read the text
nah, at which place he was disharged, January, 1865, and returned home to Union County and vame to Defiance County in 1868 and located in Hicksville Township. In 1878, he moved to Mark Township and located on Section 29, and engaged in lumbering, carrying on his farm in Hicksville Township.
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Mark Township, 1868 to 1875
Woven from the archive, old maps, post office records, the National Register and the people born here.
Lost post offices, old corners, places now gone and burying grounds
Another post office, Mark, opened and closed inside today’s town.
Mark
1868–1871
Mark Center
1875–today
18601940today
Hamlets and corners on the map
Mark Center
Gone or out of use
Dickey SchoolschoolGreens SchoolschoolMark Center High SchoolschoolPlatter Creek SchoolschoolRidenour SchoolschoolSaint Johns SchoolschoolSchool Number 1schoolSchool Number 9schoolShady Corner SchoolschoolSpion SchoolschoolWonderly Schoolschool
3cemeteries and burying grounds inside Mark Township
ColbySaint Johns LutheranSpindler
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
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 (4), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.