There is no such thing as a "country zip code." A Zip Code is a postal code used in either the United States or the Philippines, corresponding to a town or a part of a city.
The country code and area code of Embu, Kenya is 254, (0)68.
The country code and area code of Nyahururu, Kenya is 254, (0)65.
The country code and area code of Kajiado, Kenya is 254, (0)45.
The country code and area code of Kitale, Kenya is 254, (0)54.
The country code and area code of Meru, Kenya is 254, (0)64.
The country code and area code of Machakos, Kenya is 254, (0)44.
The country code and area code of Voi, Kenya is 254, (0)43.
The country code and area code of Garissa, Kenya is 254, (0)46.
The country code and area code of Kakamega, Kenya is 254, (0)56.
The country code and area code of Kisii, Kenya is 254, (0)58.
The country code and area code of Kwale, Kenya is 254, (0)40.