The area of Khon Kaen is 46 square kilometers.
The area of Khon Kaen Province is 10,886 square kilometers.
The country code and area code of Bangkok, Thailand is 66, (0)21.
The country code and area code of Chanthaburi, Thailand is 66, (0)39.
The country code and area code of Lampang, Thailand is 66, (0)54.
The country code and area code of Ratchaburi, Thailand is 66, (0)32.
The country code and area code of Saraburi, Thailand is 66, (0)36.
The country code and area code of Songkhla, Thailand is 66, (0)74.
The country code and area code of Trang, Thailand is 66, (0)75.
The country code and area code of Yala, Thailand is 66, (0)73.
The country code and area code of Chon Buri, Thailand is 66, (0)38.
The country code and area code of Ubon Ratchathani, Thailand is 66, (0)45.