Info on the name, from the City's website:
"The meaning of the name Boca Raton has always aroused curiosity. Many people wrongly assume the name is simply Rats Mouth. The Spanish word boca (or mouth) often described an inlet, while raton (literally mouse) was used as a term for a cowardly thief. But the Thieves Inlet, Boca Ratones, appeared on eighteenth century maps associated with an inlet in the Biscayne Bay area of Miami. By the beginning of the nineteenth century, the term was mistakenly applied to Lake Boca Raton, whose inlet was closed at the time. The s and later the e were dropped from this title by the 1920s, yet the correct pronunciation remains Rah-tone. "