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History · Jacksonville

45% of Jacksonville’s homes were built before 1940

0on the National Register
45%homes built before 1940
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What stands out about Jacksonville’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 Jacksonville are in the public archives yet. The rest are in attics and albums.Old housesHalf of Jacksonville’s homes were built before 1943.
★ What stands out · Help out

Start Jacksonville’s collection

The first neighbors to add old photos shape how Jacksonville’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
The story so far

Jacksonville, in brief

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

Jacksonville (also known as Kent) is a census-designated place (CDP) in Indiana County, Pennsylvania, United States. The population was 637 at the 2010 census. It was formerly an independent borough, until January 1, 1993, when it was returned to Black Lick Township, Pennsylvania. Most of it is in Young Township. Parts are in Armstrong and Black Lick townships.

Between the 2010 and 2020 censuses its population fell from 637 to 620 (-3%).

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

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.
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Famous people

Famous people close to Jacksonville

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

See all →
James StewartAmerican actor and military officer · b. 1908
Edward AbbeyAmerican author and essayist · b. 1927
Renée FlemingAmerican opera soprano · b. 1959
Alexis KnappAmerican actress · b. 1989
Patricia RobertsonAmerican astronaut · b. 1963
Jack SonniAmerican musician · b. 1954
Stories next door

History across the town line

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

Young TownshipIts storyBArmstrong Township1 historic placeB−Black Lick TownshipIts storyC+

Questions about Jacksonville’s history

Memory lane

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

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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 →