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C−History
History · Seward Township

Seward Township’s post office opened in 1854

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.

1854first post office
0on the National Register
3%homes built before 1940
Quick answers

How Seward Township began

When was Seward Township founded?

1854

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.

What drives the grade ↓
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.
All U.S. towns we grade (21,289)Ahead of 19%
NewerOlder
Illinois towns of 2,500+ (768)Ahead of 16%

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.

★ What stands out · Help out

Start Seward Township’s collection

The first neighbors to add old photos shape how Seward Township’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
The story

How Seward Township came to be

From Wikipedia’s history of Seward Township.

Read it all →

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.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Seward Township, 1854 to 1953

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1854Post officeThe Seward post office opens
  3. 1862Post officeThe Seward post office closes
  4. 20th century
  5. 1953On the mapFirst mapped by the U.S. Geological Survey
By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

Be the first to add onePhotograph a print flat, in daylight, no flash.
Add from your album
On the map

Seward Township on the map, 1953 to 1993

Every edition of the U.S. Geological Survey’s map of Seward Township. Tap a year, or press play to watch the town change.

Seward Township on the 1953 USGS mapSeward Township on the 1973 USGS mapSeward Township on the 1993 USGS map1953Yorkville 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

05001,0001,5002,0002,5003,0003,5004,0004,5005,0005,5006,0006,5007,000200020206,655

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.

See all →
Places that used to be

Lost post offices, places now gone and burying grounds

Another post office, Seward, opened and closed inside today’s town.

Gone or out of use
Bell SchoolschoolChapman SchoolschoolHeap SchoolschoolHenderson SchoolschoolJones SchoolschoolMartin SchoolschoolMcKanna SchoolschoolRossi's Farm Airportairport
2cemeteries and burying grounds inside Seward Township
Plattville LutheranSeward Mound

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.

Questions about Seward Township’s history

What year was Seward Township founded?

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.

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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.