The population of Los Angeles County alone is larger than that of 40 U.S. states.
Photo from Guardians of Angels - A History of the Los Angeles Police Department by James Bultema.
Circa 1870. Reported to be earliest known Los Angeles Police uniforms. Officer William "Billy" Sands, one of the first seven officers hired by the LAPD, is on the right. The photo was taken prior to 1876, when formal uniforms (dark blue surplus U.S. Army Civil War uniforms, thus, the origin of "LAPD blue") were adopted by the LAPD.
This small school district is the oldest in Los Angeles County and third oldest in California.