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History · Oklahoma

Oklahoma dates to 1931, and 29% of its homes were built before 1940

Below: maps from 1907 on and the census since 1940.

1931founded
0on the National Register
29%homes built before 1940
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Photo: Nyttend · Public domain
Quick answers

How Oklahoma began

When was Oklahoma founded?

1931

Oklahoma dates its founding to 1931 (Wikidata). The census first counted it in 1940.

First census: 868 in 19402020 census: 78895 years
Founding year: Wikidata.

What stands out about Oklahoma’s past

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

A history waiting to be writtenNo old photos of Oklahoma are in the public archives yet. The rest are in attics and albums.Boom and bustPeaked at 1,084 in 1970; 788 people lived here in 2020.On the map since 19075 editions of the USGS map, 1907 to 1993. Watch Oklahoma change.Old housesHalf of Oklahoma’s homes were built before 1958.
★ What stands out · Help out

Start Oklahoma’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
People over time

Oklahoma, census by census

02004006008001,0001,20019401960198020002020Peak: 1,084

Peaked at 1,084 in 1970; 788 people lived here in 2020.

9 censuses, 1940–2020.

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

On the map

Oklahoma on the map, 1907 to 1993

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

Oklahoma on the 1907 USGS mapOklahoma on the 1953 USGS mapOklahoma on the 1969 USGS mapOklahoma on the 1979 USGS mapOklahoma on the 1993 USGS map1907Freeport 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 Oklahoma.

The story so far

Oklahoma, in brief

Wikipedia doesn’t have a history of Oklahoma yet. The photos, dates and memories neighbors add here are how it gets written.

Oklahoma is a borough in Westmoreland County, Pennsylvania, United States. As of the 2020 census, Oklahoma had a population of 788.

Oklahoma was established in 1931. Between the 2010 and 2020 censuses its population fell from 809 to 788 (-3%).

Intro from Wikipedia. Population: U.S. Census Bureau.

Timeline

Oklahoma, 1907 to 1970

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

  1. 20th century
  2. 1907On the mapFirst mapped by the U.S. Geological Survey
  3. 1931
    FoundingOklahoma is established
  4. 1970CensusPopulation peaks at 1,084
By decade

Oklahoma, decade by decade

Today2 recent
Oklahoma Faith ELCA2019Oklahoma Faith ELCAHancock from Grove2019Hancock from Grove
Famous people

Famous people close to Oklahoma

Nobody well known was born in Oklahoma itself, so here are the best known from just nearby.

See all →
Stephanie L. KwolekAmerican chemist, inventor of Kevlar · b. 1923
William PerryAmerican mathematician and businessman, former … · b. 1927
Eddie AdamsAmerican photographer · b. 1933
Alexis KnappAmerican actress · b. 1989
Adam MaidaCatholic cardinal · b. 1930
Don TaylorAmerican actor and film director · b. 1920
Stories next door

History across the town line

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

Washington Township1 historic placeBBell TownshipIts storyBApollo1 historic placeAAllegheny TownshipIts storyC−East VandergriftIts storynot graded: under 1,000 residents or part of its townNorth ApolloIts storyC+Orchard HillsIts storynot graded: under 1,000 residents or part of its townKiskiminetas TownshipIts storyB−

Questions about Oklahoma’s history

What year was Oklahoma founded?

In 1931, according to Wikidata. the census of 1940 counted 868 people here.

Memory lane

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

Town Square →
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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 (2), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.