District 3 is the second largest Congressional district in Arizona. Out of the 435 Congressional districts, it is the 26th largest in land area, covering 22,872 square miles.
This is a land area larger than seven individual states, and larger than Rhode Island, Delaware, Hawai’i, Connecticut and New Jersey combined. The southern boundary of District 3 coincides with 300 miles of the U.S./Mexico border. Only Texas’ 23rd district has a longer stretch of the southern border.
The district extends south to the Mexican border, encompassing Nogales, and west to the Arizona/California border to include Somerton, San Luis and parts of Yuma County.
The district is also home to four sovereign nations: the Cocopah, Pascua Yaqui, Quechan, and Tohono O'odham.