Area code 916 covers California’s capital region, including Sacramento, Elk Grove, Roseville, Citrus Heights, and Folsom. As one of the original area codes established in 1947, it has a long-standing presence in Northern California. Over time, the region's rapid population growth led to the creation of area codes 530 and 279. In 2018, 279 was implemented as an overlay to 916, requiring ten-digit dialing in the area. Sacramento, at the heart of 916, plays a vital role in state governance, healthcare, and education. The area code is also linked to historic attractions such as Old Sacramento and the California State Capitol. Despite changes, 916 remains deeply associated with California’s political and cultural heartland.