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History · Greenock

Greenock’s post office opened in 1876, and 14% of its homes were built before 1940

1876first post office
0on the National Register
14%homes built before 1940
Add an old photoShare a memory
Quick answers

How Greenock began

When was Greenock founded?

1876

The Greenock post office opened in 1876, the earliest record of the town by name.

2020 census: 1,989150 years
Founding year: the first Greenock post office (Blevins & Helbock, CC0).

What stands out about Greenock’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 Greenock are in the public archives yet. The rest are in attics and albums.Old housesHalf of Greenock’s homes were built before 1954.
★ What stands out · Help out

Start Greenock’s collection

The first neighbors to add old photos shape how Greenock’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

Greenock, in brief

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

Greenock is a census-designated place (CDP) in Elizabeth Township, Allegheny County, Pennsylvania, United States. As of the 2020 US Census the population was 1,989. The community was named after Greenock, Scotland. Greenock is home to 2 churches, 1 school, 1 volunteer fire company, 2 baseball fields, and 2 cemeteries.

Its first post office opened in 1876. Between the 2010 and 2020 censuses its population fell from 2,195 to 1,989 (-9%).

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.
Add from your album
Famous people

Famous people close to Greenock

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

See all →
Earl HinesAmerican jazz pianist · b. 1903
Aline MacMahonActress · b. 1899
Marc ConnellyAmerican playwright · b. 1890
Swin CashAmerican Hall of Fame basketball player · b. 1979
Tamara TunieAmerican actress · b. 1959
Duane MichalsAmerican photographer · b. 1932
Stories next door

History across the town line

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

Elizabeth Township2 historic placesA−South Versailles TownshipIts storynot graded: under 1,000 residents or part of its townCoulterIts storynot graded: under 1,000 residents or part of its townWhite OakIts storyBBostonIts storynot graded: under 1,000 residents or part of its townMcKeesport5 historic placesA

Questions about Greenock’s history

What year was Greenock founded?

The Greenock post office opened in 1876, 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 →
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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 →