Pittsburgh is a large city located in the state of Pennsylvania. With a population of 302,898 people and 178 associated neighborhoods, Pittsburgh is the second largest community in Pennsylvania. Much of the housing stock in Pittsburgh was built prior to World War II, making it one of the older and more historic cities in the country.Pittsburgh is a decidedly white-collar city, with fully 88.31% of the workforce employed in white-collar jobs, well above the national average. Overall, Pittsburgh is a city of professionals, managers, and sales and office workers. There are especially a lot of people living in Pittsburgh who work in office and administrative support (10.10%), management occupations (9.95%), and healthcare (8.44%). Also of interest is that Pittsburgh has more people living here who work in computers and math than 95% of the places in the US. A relatively large number of people in Pittsburgh telecommute to their jobs. Overall, about 17.54% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes. In addition, Pittsburgh is a major college town. As is often the case in college towns, the many students that live in Pittsburgh have a strong influence on the local culture and music scene. In fact, Pittsburgh is one of only a few big cities that are also major college towns. This combination of big city status and thousands of college students gives Pittsburgh, on one hand, a sophisticated style, while on the other also providing lots of diversions and entertainment for students. In fact, Pittsburgh is one of the biggest "college towns" in America. This elevates both the status of the city and the knowledge sector of the local economy, which is sustained by a steady output of new college graduates every spring. Pittsburgh, like many big cities in America, has a public transportation system, but the citizens of Pittsburgh are lucky because theirs is one of the most extensive and widely used. Many commuters choose to leave their cars at home and instead use the bus to get to and from work. In fact, for some people it is feasible to forgo car ownership entirely, avoiding the cost and headache of driving in heavy traffic. The benefits include reduced air pollution and load on the road network.The citizens of Pittsburgh are among the most well-educated in the nation: 46.75% of adults in Pittsburgh have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree. The per capita income in Pittsburgh in 2022 was $41,146, which is upper middle income relative to Pennsylvania and the nation. This equates to an annual income of $164,584 for a family of four. However, Pittsburgh contains both very wealthy and poor people as well. Pittsburgh is an extremely ethnically-diverse city. The people who call Pittsburgh home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Pittsburgh residents report their race to be White, followed by Black or African-American. Important ancestries of people in Pittsburgh include German, Irish, Italian, Polish, and English. The most common language spoken in Pittsburgh is English. Other important languages spoken here include Spanish and Chinese.