c.1530, at first essentially the same word as
policy (1); from M.Fr.
police (1477), from L.
politia "civil administration," from Gk.
polis "city" (see
policy (1)). Still used in Eng. for "civil administration" until mid-19c.; application to "administration of public order" (1716) is from Fr., and originally referred to France or other foreign nations. The first force so-named in Eng. was the Marine Police, set up 1798 to protect merchandise at the Port of London. The verb "to keep order by means of police" is from 1841;
policeman is from 1829.
Police state "state regulated by means of national police" first recorded 1865, with ref. to Austria.