Chile is country code +56.
(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 North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The country code for Chile is +56. The plus sign means "insert your international access prefix here"; the prefix from the US, Canada, and other areas in country code +1 is 011.
To call from the USA to Chile, dial
011 = international access prefix from USA
56 = country code for Chile
and then the Chilean number without the leading 0
The country code and area code of ChillÌÁn, Chile is 56, 42.
The country code and area code of Osorno, Chile is 56, 64.
The country code and area code of Antofagasta, Chile is 56, 55.
The country code and area code of Arica, Chile is 56, 58.
The country code and area code of Coyhaique, Chile is 56, 67.
The country code and area code of Linares, Chile is 56, 73.
The country code and area code of Ovalle, Chile is 56, 53.
The country code and area code of Puyuhuapi, Chile is 56, 68.
The country code and area code of Rancagua, Chile is 56, 72.
The country code and area code of Talca, Chile is 56, 71.
The country code and area code of Temuco, Chile is 56, 45.
The country code and area code of Valdivia, Chile is 56, 63.