What are the different add on's to Japanese city names, such as "ko"?

Question

What are the different add on's to Japanese city names, such as "ko" and some others (I don't remember), and what do they mean?

Answer 1

Just to help further describe
There are To(都), Fu(府), Ken(県), Ku (区), Shi(市), Machi or Cho(町), and Mura(村)

Tokyo-To 東京都 which means Tokyo capital
Osaka-fu 大阪府　Which indicates the same general size as a capital, but not being the capital.
Saitama-ken埼玉県 which means prefecture
Shibuya-ku 渋谷区 which is a city ward within Tokyo-To
Mito-shi水戸市 which is a city in the Ibaraki prefecture or Ibaraki-ken
Ohyama-cho or sometime read machi 大山町　which means town
Then there are the little villages way out in the country sides called mura, like Minami-mura 南村

Answer 2

Tokyo-to has the same powers as a prefecture and is the only administrative "to". Hence there are "shi", as in cities within Tokyo-to and Governor Ichihara runs Tokyo-to from the very impressive Tocho building. Osaka and Kyoto are "fu" which means they have a bit more autonomy than a plain old "shi".