census-designated place
A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only.
CDPs have been used in each decennial census since 1980 as the counte ...
in
Somerset
Somerset ( , ), Archaism, archaically Somersetshire ( , , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east ...
Nottingham
Nottingham ( , East Midlands English, locally ) is a City status in the United Kingdom, city and Unitary authorities of England, unitary authority area in Nottinghamshire, East Midlands, England. It is located south-east of Sheffield and nor ...
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
. It lies approximately 25 miles (40 km) southwest of
Pittsburgh
Pittsburgh ( ) is a city in Allegheny County, Pennsylvania, United States, and its county seat. It is the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania (after Philadelphia) and the List of Un ...
and is in the
Pittsburgh metropolitan area
Greater Pittsburgh is the metropolitan area surrounding the city of Pittsburgh in Western Pennsylvania, United States. The region includes Allegheny County, Pennsylvania, Allegheny County, Pittsburgh's urban core county and economic hub, and s ...
. The population was 645 at the 2020 census.
Eighty Four contains the
84 Lumber
84 Lumber is an operated American building materials supply company. Founded in 1956 by Joseph Hardy, it derives its name from the unincorporated village of Eighty Four, Pennsylvania, a census-designated place south of Pittsburgh, where it ...
company's headquarters. Eighty Four is a part of the Canon-McMillan,
Trinity
The Trinity (, from 'threefold') is the Christian doctrine concerning the nature of God, which defines one God existing in three, , consubstantial divine persons: God the Father, God the Son (Jesus Christ) and God the Holy Spirit, thr ...
Eighty Four was originally named Smithville. Due to postal confusion with another town of the same name, its name was changed to "Eighty Four" on July 28, 1884. The origin of the name is uncertain. It has been suggested that the town was named in honor of
Grover Cleveland
Stephen Grover Cleveland (March 18, 1837June 24, 1908) was the 22nd and 24th president of the United States, serving from 1885 to 1889 and from 1893 to 1897. He was the first U.S. president to serve nonconsecutive terms and the first Hist ...
's 1884 election as
President of the United States
The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the Federal government of the United States#Executive branch, executive branch of the Federal government of t ...
, but that occurred after the town was named. Another possibility is the town's mile marker on the
Baltimore and Ohio Railroad
The Baltimore and Ohio Railroad was the oldest railroads in North America, oldest railroad in the United States and the first steam engine, steam-operated common carrier. Construction of the line began in 1828, and it operated as B&O from 1830 ...
. Another is that the town was named after the year the town's
post office
A post office is a public facility and a retailer that provides mail services, such as accepting letter (message), letters and parcel (package), parcels, providing post office boxes, and selling postage stamps, packaging, and stationery. Post o ...
was built, by a postmaster who "didn't have a whole lot of imagination."