According to Radio-Locator, there are 51 stations within listening range when you straddle the Dade/Broward line. Of those, I counted all that target the Miami/Fort Lauderdale Market (not including those that spill over from the West Palm Beach/Boca Raton market). There are 14 FM and 17 AM English-language stations. That actually makes 31 (I mistakenly counted WEAT last time, which is a WPB/Boca station and shouldn't have been counted). On the Spanish-language side, there are 5 FM stations and 8 AM stations for a total of 13 Spanish-language stations in the market (I'm not sure how I got 14 last time). Of the English-language stations, 5 target the African-American community: 3 Rhythmics/Urban CHR's (WPOW, WEDR and WMIB), 1 Urban AC (WHQT) and one Talk (WTPS).
You can't make the argument that only FM counts. The most listened-to Spanish-language station (and third most listened-to station overall) is WAQI, an AM Spanish News/Talk station.
Besides, the argument of Dade vs. Broward doesn't really work. Dade County's population makes up three quarters of the market, and that's really beside the point to begin with. The two counties form one market. If you're going to work in the market, you can't take one into consideration over the other unless you work at one of the very few stations that do (none of which are doing very well, I might add).