More historic than 19% of U.S. towns · #643 of 768 in Illinois. What drives it
Most of Seward Township was built recently: 3% of its homes predate 1940 and the median home dates from 2006. Below: maps from 1953 on and the census since 2000.
The Seward Township post office opened in 1854, the earliest record of the town by name. Another post office, Seward (1854), opened inside today’s town and later closed.
First census: 846 in 20002020 census: 6,655172 years
How historic is Seward Township?
C−
More historic than 19% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Seward Township post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Seward Township’s History grade
On its age, its old homes and the National Register, Seward Township is more historic than 19% of U.S. towns, #643 of 768 in Illinois. Its age holds the grade up; its share of homes from before 1940 pulls it down.
C−
HistoryA character grade: shown, never part of Seward Township’s overall grade.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Seward Township’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would still be C−. The pre-1940 share is a Census survey estimate (±3.9 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 Seward Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Franklin was the original name of Seward Township. On November 14, 1850, the name changed to Seward, after William H. Seward, who served as governor of New York State and as a U.S. Senator from New York as well as Secretary of State in the Lincoln Administration.
Every edition of the U.S. Geological Survey’s map of Seward Township. Tap a year, or press play to watch the town change.
1953Yorkville SE sheet · 1:24,000
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Seward Township.
People over time
Seward Township, census by census
Grew from 846 people in 2000 to 6,655 in 2020, 7 times over.
3 censuses, 2000–2020.
U.S. Census Bureau decennial counts, from the census table on Seward Township’s Wikipedia page.
Famous people
Famous people close to Seward Township
Nobody well known was born in Seward Township itself, so here are the best known from just nearby.
The Seward Township post office opened in 1854, the earliest record of the town by name (U.S. post office records).
How does Seward Township rank for history?
Seward Township is more historic than 19% of U.S. towns, #643 of 768 in Illinois. 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.
How old are the homes in Seward Township?
3% of Seward Township’s homes were built before 1940 (Census estimate, ±3.9 points), against a typical 11% for an Illinois town; the median home was built in 2006.
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 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.