Allison Park is a census-designated place

Census-designated place

A census-designated place is a concentration of population identified by the United States Census Bureau for statistical purposes. CDPs are delineated for each decennial census as the statistical counterparts of incorporated places such as cities, towns and villages...

 in Allegheny County

Allegheny County, Pennsylvania

Allegheny County is a county in the southwestern part of the U.S. state of Pennsylvania. As of the 2010 census, the population was 1,223,348; making it the second most populous county in Pennsylvania, following Philadelphia County. The county seat is Pittsburgh...

, Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

. It is a suburb of Pittsburgh and is located within Hampton, Shaler and McCandless

McCandless, Pennsylvania

McCandless is a municipality in Allegheny County, Pennsylvania, United States. The population was 28,457 at the 2010 census. It was originally incorporated as a township; however, on January 1, 1975, McCandless Township adopted a new charter designating it a Home Rule Charter Municipality with the...

 townships. It had a population of 21,552 at the 2010 census.

History

Allison Park in the 18th century was called Tally Cavey. Tally Cavey was part of the large Pitt Township.

Talley Cavey

The word Talley Cavey is Celtic

Celtic languages

The Celtic languages are descended from Proto-Celtic, or "Common Celtic"; a branch of the greater Indo-European language family...

 for "hill over the borough". Early settlers named it after a settlement in Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

. The town started in the woods that are now along Mt. Royal Boulevard, and continued until it reached what is now the Pennsylvania Turnpike

Pennsylvania Turnpike

The Pennsylvania Turnpike is a toll highway system operated by the Pennsylvania Turnpike Commission in the Commonwealth of Pennsylvania, United States. The three sections of the turnpike system total . The main section extends from Ohio to New Jersey and is long...

. The area can still be called Talley Cavey today.