| Eighty Four, Pennsylvania | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Label: | Eighty Four |
| Pushpin Map Caption: | Location of Eighty Four in Pennsylvania |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 17.10 |
| Area Land Km2: | 17.10 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 645 |
| Population Density Km2: | 37.73 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1049 |
| Coordinates: | 40.1819°N -80.1331°W |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 15330 |
| Area Code: | 724 |
| Blank Name: | FIPS code |
| Blank Info: | 42-22736 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1174062 |
| Area Total Sq Mi: | 6.60 |
| Area Land Sq Mi: | 6.60 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 97.71 |
Eighty Four is a census-designated place in Somerset, Nottingham, North Strabane, and South Strabane townships in Washington County, Pennsylvania. It lies approximately 25 miles (40 km) southwest of Pittsburgh and is in the Pittsburgh metropolitan area. The population was 645 at the 2020 census.
Eighty Four contains the 84 Lumber company's headquarters.[3] Eighty Four is a part of the Canon-McMillan, Trinity, Ringgold, and Bentworth school districts.
Eighty Four is accessible via PA Route 519 and PA Route 136 and interstates 79 and 70. The closest international airport is the Pittsburgh International Airport approximately 25 miles northwest of Eighty Four in Findlay Township, Pennsylvania.
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.[4] The origin of the name is uncertain. It has been suggested that the town was named in honor of Grover Cleveland's 1884 election as President of the United States,[5] but that occurred after the town was named. Another possibility is the town's mile marker on the Baltimore and Ohio Railroad.[4] Another is that the town was named after the year the town's post office was built, by a postmaster who "didn't have a whole lot of imagination."[6]