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–Not graded
History · Folsom

Folsom’s post office opened in 1887, and 11% of its homes were built before 1940

Below: 6 old photos and papers from 1910 on.

1887first post office
0on the National Register
11%homes built before 1940
6old photos & papers
Add an old photoShare a memory
From Folsom’s archive · credits on each photo
Quick answers

How Folsom began

When was Folsom founded?

1887

The Folsom post office opened in 1887, the earliest record of the town by name.

2020 census: 8,287139 years
Founding year: the first Folsom post office (Blevins & Helbock, CC0).

What stands out about Folsom’s past

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

Old housesHalf of Folsom’s homes were built before 1957.
★ What stands out · The story so far

Folsom, in brief

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

Folsom is a census-designated place (CDP) in Delaware County, Pennsylvania, United States. It is part of Ridley Township. The population was 8,323 at the 2010 census.

Its first post office opened in 1887. Its population held steady between the last two censuses: 8,323 in 2010, 8,287 in 2020.

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

By decade

Folsom, decade by decade

2 decades in the archive, from the 1910s to the 1920s. Scroll each row; tap a photo for its story.

1910s–1920s6 items
Baltimore and Ohio Railroad : Locomotive BO 21071910Baltimore and Ohio Railroad : Locomotive BO 2107Baltimore and Ohio Railroad : Locomotive BO 21231910Baltimore and Ohio Railroad : Locomotive BO 2123Baltimore and Ohio Railroad : Locomotive BO 40141912Baltimore and Ohio Railroad : Locomotive BO 4014Baltimore and Ohio Railroad : Locomotive BO 53001927Baltimore and Ohio Railroad : Locomotive BO 5300Baltimore and Ohio Railroad : Locomotive BO 52081927Baltimore and Ohio Railroad : Locomotive BO 5208Baltimore and Ohio Railroad : Locomotive BO 53201929Baltimore and Ohio Railroad : Locomotive BO 5320
1930s–1990snothing yet
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Add from your album
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.

Baltimore and Ohio Railroad : Locomotive BO 2107
Retake this viewBaltimore and Ohio Railroad : Locomotive BO 2107, 1910

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

Retake this view · +15
Famous people

Famous people close to Folsom

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

See all →
T
Tina FeyAmerican actress, comedian, writer, producer, a… · b. 1970
Jamie KennedyAmerican actor and comedian · b. 1970
Ethel WatersAmerican blues, jazz and gospel vocalist and ac… · b. 1896
Jameer NelsonAmerican basketball player · b. 1982
John BillingsleyAmerican actor · b. 1960
A
Alex NorthAmerican composer · b. 1910
Help out

Finish Folsom’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.
Retake an old viewBaltimore and Ohio Railroad : Locomotiv…: stand where they stood+15Share a family photoSign in to add one+10
Stories next door

History across the town line

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

Ridley TownshipIts storyCProspect Park1 historic placeB+WoodlynIts storynot graded: under 1,000 residents or part of its townSwarthmore3 historic placesA−Ridley ParkIts storyC+RutledgeIts storynot graded: under 1,000 residents or part of its townSpringfield TownshipIts storyB

Questions about Folsom’s history

What year was Folsom founded?

The Folsom post office opened in 1887, the earliest record of the town by name (U.S. post office records).

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 the Library of Congress (6). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.