How many police officers are on the Cleveland police department?
In 2007 there were 1584 sworn officers of all ranks on the Cleveland Police Department.
The Los Angeles Police Department has about 9,000 sworn officers. There are other law enforcement agencies that operate within the boundaries of the City of Los Angeles, separate from LAPD. Examples include college and university police departments, school district police, LA County Sheriff's Department deputies, etc.
It depends on where you are and exactly what you mean. In the U.S. within any given department there are patrol officers, traffic officers, adminstrative officers, Tac team or SWAT officers, supervisors, detectives, etc. Then there are city officers, county officers, state troopers, DEA, FBI, CIA, post office police, school police (some schools use fully commissioned police officers), special ops (tact team, SWAT team, etc).
Not always, they could be a Captain, for example. Added: ALL police officers are OFFICERS of the law. Therefore, even though the term "officer" is often used a rank in many departments, technically EVERY sworn person on the department is an OFFICER of the law - from the Chief of Police right down to the newest rookie.