Like many other San Francisco neighborhoods, Noe Valley started out as a working-class neighborhood for employees and their families in the area's once-thriving blue-collar economy. Since 1980 it has undergone successive waves of gentrification and is now considered an upper-middle class/wealthy neighborhood. It is home to many urban professionals, particularly young couples with children. It is colloquially known as Stroller Valley, for the many strollers in the neighborhood. The median sale price for homes in Noe Valley as of December 2019 was $1.83 million. One of the attractions of Noe Valley is that the adjacent Twin Peaks partly blocks the coastal fog and cool winds from the Pacific, making the microclimate usually sunnier and warmer than surrounding neighborhoods.