Area Codes in Walnut
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 213 | Los Angeles | California | 3,792,621 | United States | America/Los_Angeles |
| 310 | Los Angeles | California | 3,792,621 | United States | America/Los_Angeles |
| 323 | Los Angeles | California | 3,792,621 | United States | America/Los_Angeles |
| 415 | San Francisco | California | 805,235 | United States | America/Los_Angeles |
| 626 | Pasadena, California | California | 137,122 | United States | America/Los_Angeles |
| 909 | San Bernardino, California | California | 209,924 | United States | America/Los_Angeles |
Nearby Cities
| City | Region | Country | Population | Area Codes | Zip Codes |
|---|---|---|---|---|---|
| Covina, California | California | United States | 47,796 | 323, 949, 818, 626 | 91722, 91723, 91724 |
| Diamond Bar, California | California | United States | 55,544 | 310, 949, 909 | 91765 |
| La Puente, California | California | United States | 39,816 | 323, 626, 562 | 91744, 91746, 91747, 91749 |
| Rowland Heights, California | California | United States | 48,993 | 323, 626, 562, 213 | 91748 |
| West Covina, California | California | United States | 106,098 | 909, 213, 559, 323 | 91719, 91790, 91791, 91792 |