The 503 area code includes Portland, Beaverton, Salem, Gresham, and Albany. This area is known for its vibrant populations, economic diversity, cultural events, and historical sites. This area is unique because it holds a city that is considered to be the greenest city in the world and has become an example for many other cities to follow. It also encompasses the Oregon counties of Clackamas, Clatsop, Columbia, Marion, Multnomah, Polk, Tilamook, Yamil and Washington.

Portland and Salem hold many historical sites that are preserved by the federal government. Oregon also holds some of the most famous routes through these populated cities. Within the 503 area code zone there are not only densely populated and internationally recognized cities such as Portland, but there are also cities with a small town feel, such as Gresham and Albany. Most of the cities in the 503 area code are making efforts to revitalize themselves to attract not only new residents but also to attract a new economy.

To attract a new economy many cities are building hospitals and investing in more vibrant downtown areas. They are encouraging individuals to open their own small shops and firms. For example, Albany employs many small law firms that have several family law lawyers to help the residents in its small city.