Peaked at 984 in 1910; 212 people lived here in 2020.
15 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Glenfield’s Wikipedia page.
On the map
Glenfield on the map, 1906 to 1990
Every edition of the U.S. Geological Survey’s map of Glenfield. Tap a year, or press play to watch the town change.
1906Sewickley 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 Glenfield.
The story so far
Glenfield, in brief
Wikipedia doesn’t have a history of Glenfield yet. The photos, dates and memories neighbors add here are how it gets written.
Glenfield is a borough in Allegheny County, Pennsylvania, United States, situated along the Ohio River. The population was 212 at the time of the 2020 census.
Glenfield was established in 1796. Between the 2010 and 2020 censuses its population grew from 205 to 212 (+3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Glenfield in 1889
Passages that mention Glenfield, cut from the printed page as they were published.
History of Allegheny county, Pennsylvania1889 · page 191Read the page →
Read the text
Glenfield Borough. — This borough was incorporated December 4, 1875, from the southeastern part of Aleppo, under the name of Camden, which was changed to the present style March 9, 1876, by decree of court. The town proper occupies a narrow valley at the mouth of Kilbuck run, and was built up between 1868 and 1872, with the occasional addition of a building since that time. The population was 538 in 1880. The churches are Thorn chapel, Methodist Episcopal, built in 1874, and the Presbyterian, organized in 1876.
Text read by machine from the scan; it may contain errors.
History of Allegheny county, Pennsylvania1889 · page 191Read the page →
Read the text
Glenfield Borough. — This borough was incorporated December 4, 1875, from the southeastern part of Aleppo, under the name of Camden, which was changed to the present style March 9, 1876, by decree of court. The town proper occupies a narrow valley at the mouth of Kilbuck run, and was built up between 1868 and 1872, with the occasional addition of a building since that time. The population was 538 in 1880. The churches are Thorn chapel, Methodist Episcopal, built in 1874, and the Presbyterian, organized in 1876.
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Glenfield, 1796 to 1969
Woven from the archive, old maps, post office records, the National Register and the people born here.
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 (3), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.