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Lake Street at dusk, Oak ParkPhoto: Dennisyerger84 · CC BY-SA 4.0
–Not graded
History · Oak Park Township

Oak Park Township dates to 1835, and 59% of its homes were built before 1940

14 places in town are on the National Register. Below: 15 old photos and papers, maps from 1891 on, and the census since 1910.

1835founded
14on the National Register
59%homes built before 1940
15old photos & papers
From Oak Park Township’s archive · credits on each photo
Quick answers

How Oak Park Township began

When was Oak Park Township founded?

1835

Oak Park Township dates its founding to 1835 (Wikidata and Wikipedia’s history agree). The census first counted it in 1910.

First census: 19,444 in 19102020 census: 54,583191 years
Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1846.The full story ↓

What stands out about Oak Park Township’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

★ What stands out · On the map

Oak Park Township on the map, 1891 to 1993

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

Oak Park Township on the 1891 USGS mapOak Park Township on the 1900 USGS mapOak Park Township on the 1928 USGS mapOak Park Township on the 1953 USGS mapOak Park Township on the 1963 USGS mapOak Park Township on the 1972 USGS mapOak Park Township on the 1993 USGS map1891Riverside 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 Oak Park Township.

On the National Register

14 listings protect 3,525 historic buildings

The country’s official list of buildings and places worth saving. 3 are National Historic Landmarks, the highest tier.

places listed
14
National Historic Landmarks
3
none yet
historic buildings protected
3,525
each building in a district counts

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

The story

How Oak Park Township came to be

From Wikipedia’s history of Oak Park Township.

Read it all →

In 1835, Joseph and Betty Kettlestrings, immigrants from Yorkshire, England, staked out a farm and built a house near Lake Street and Harlem Avenue, west of Chicago. Once their children were born, they moved to Chicago for the schools in 1843, and moved back again in 1855 to build a more substantial home a bit east on their quarter section of land. More farmers and settlers had entered the area. Their land was called by several names locally, including Oak Ridge, Harlem, and Kettlestrings Grove. When the first post office was set up, it could not use the name Oak Ridge, as another post office was using that name in Illinois, so the post office chose Oak Park, and that name became the name for the settlement as it grew, and for the town when it incorporated in 1902.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Oak Park Township, 1835 to 1910

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

  1. 19th century
  2. 1835
    FoundingOak Park Township is established
  3. 1880In the archive1940 Census Enumeration District Maps - Illinois - Cook County - Oak Park - ED 16-350 - E…
  4. 1890In the archiveScoville Institute, now Oak Park Public Library, Oak Park, Illinois) - Calkins, Eng, Chi
  5. 1891On the mapFirst mapped by the U.S. Geological Survey
  6. 20th century
  7. 1900In the archiveU.S. post office
  8. 1910In the archivePrint, Perspective and Plan for Gale House, Oak Park, IL, 1910
By decade

Oak Park Township, decade by decade

4 decades in the archive, from the 1880s to the 1910s. Scroll each row; tap a photo for its story.

Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

1940 Census Enumeration District Maps - Illinois - Cook County - Oak Park - ED 16-350 - ED 16-391
Retake this view1940 Census Enumeration District Maps - Illinois - Cook County - Oak Park - ED 16-350 - ED 16-391, 1880

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Oak Park Township’s page.

Retake this view · +15
People over time

Oak Park Township, census by census

05,00010,00015,00020,00025,00030,00035,00040,00045,00050,00055,00060,00065,00070,000192019401960198020002020Peak: 66,015

Between 19,444 and 66,015 people in every census since 1910.

12 censuses, 1910–2020.

U.S. Census Bureau decennial counts, from the census table on Oak Park Township’s Wikipedia page.

Help out

Finish Oak Park Township’s story

Most archives stop around 1920. The photos from after that are in family albums, not libraries.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
2 of 10 decades. The empty ones are waiting for someone’s album.
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about Oak Park Township’s history

What year was Oak Park Township founded?

In 1835, according to Wikidata and Wikipedia’s history of the town. Oak Park Township’s post office opened in 1846, and the census of 1910 counted 19,444 people here.

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). How TownRatings grades history →

From Wikimedia Commons (8), the Library of Congress (7), Wikidata (2), Wikipedia, U.S. Geological Survey historical maps and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.