Palo Alto, CA, is in area code +1 650.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The airport code for Palo Alto Airport of Santa Clara County is PAO.
Country code +1 is North America (USA, Canada, etc.). Area code 650 is "the Peninsula" area between San Francisco and San Jose, California. Area code 650 includes San Mateo, Redwood City, Palo Alto, Menlo Park, and most of Daly City.
Most of Santa Clara County, California, including San Jose, Cupertino, Santa Clara, Gilroy, Los Gatos, and Milpitas, is in area code +1 408. Area code +1 669 will be added as an overlay in November 2012. The northwestern portion of Santa Clara County, including Palo Alto, Los Altos, and Mountain View, is in area code +1 650.
The country code and area code of Atotonilco El Alto, Mexico is 52, (01)391.
The country code and area code of Apaseo El Alto, Mexico is 52, (01)413.
The 650 area code includes most of San Mateo County and part of northwestern Santa Clara County, including the cities of Redwood City, Daly City, San Mateo, South San Francisco, Palo Alto, Mountain View, and Los Altos in the San Francisco Bay ares in California.
The city of Santa Clara, California, is in area code 408 and overlay code 669.Other portions of Santa Clara County are in area code 650 (Palo Alto).In international format, put country code +1 in front of the area code.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The area code for Fremont California is 510.
Corcoran, California, is in area code 559.
Fairfield, California, including Cordelia, is in area code 707.
43460 is a court in Palo Alto, CA. The address is 270 Grant Avenue.
Santa Monica is in area code 310 and overlay area code 424.