saint.augustine
There is no translation to Spanish for Washington, as it is a last name (the city was named to honor George Washington).
Los Angeles, which is the second largest city in the US behind New York. Its population stands at about 3,800,000. Los Angeles is Spanish for 'The Angels'.
The name of the city of gold sought by Spanish explorers is El Dorado.
It means mouse mouth. If you are specifically referring to the Floridian city, this was a city named by Spaniards and as such has a Spanish name.
Because the complete name of such city was Mexico-Tenochtitlan. It was customary for Spanish conquistadors to keep the name of the cities they conquered.
The surname Medina is originally Arabic, but borrowed into Spanish. It comes from the name of a Spanish city, whose name is derived from the Arabic word for "city".
Guernica
Santa Maria
BILBAO
Sante Fe
Kimberly isn't a Spanish name, so it doesn't mean anything in Spanish. Kimberly originated as the place name of a South African city. The city was named in honor of a Lord Kimberley in the 19th century.