Greer is a city in Greenville and Spartanburg counties in the U.S. state of South Carolina, between the cities of Greenville and Spartanburg. The population was 25,515 at the 2010 census. It is projected to hit 30,000 within 4 years. Each day, more than three times that number of people pass through the city on the two highways which run through the city. The Greenville County portion of Greer is part of the Greenville–Mauldin–Easley Metropolitan Statistical Area, while the Spartanburg County portion is part of the Spartanburg Metropolitan Statistical Area.
Greer is adjacent to Greenville-Spartanburg International Airport (GSP), which serves Greenville, Spartanburg, and the Upstate. Greer is also the site of the only BMW manufacturing facility in North America. According to a June 2005 article in The Greenville News, BMW's Greer plant employs about 4,600 workers, and has attracted dozens of suppliers in South Carolina, providing jobs for more than 12,000 workers.