El Ejido Sonora belongs to the municipality Mexicali, Baja California state and its official ZIP Code is 21738
The Postal Codes National Catalog is prepared by the Mexican Postal Service and the postal code has 5 digits, depending on the country area. The first two digits identify the state or part of it. In the case of Mexicali the Zip Code range of the Baja California state is 21 y 22. To send letters or packages to Mexicali, Baja California you must always use the five-digit postal code.
The local area phone code is 658
Check out the Baja California ZIP Code list
Check out the list of cities with 21738 ZIP Code in México