The word cops is use nation wide but it belongs to CA?

The term "cop" for a policeman far predates such organizations as C.O.P.S., having been used in print as far back as 1846 (not the turn of the century) in England (not the U.S.), long before television. It is true that the term is a contraction of the word "copper." However, the term did NOT come from the metal, either for helmets, buttons, or badges. Instead, the most likely explanation is that it comes from the verb "to cop" meaning to seize, capture, or snatch, dating from just over a century prior to its written appearance.

http://www.straightdope.com/columns/read/2209/why-...

"cop" is short for copper, which is what police officers were called at the turn of the century when they all wore copper BUTTONS on their coats (not copper helmets). There are many law enforcement organizations throughout the U.S. that use an acronym that is something similar to C.O.P. or C.O.P.S.

Actually, cop originated long before C.O.P.S. They used to be called coppers because of the copper helmets they wore. That got shortened to cop.