You have two choices - Broward County (Fort Lauderdale) and look it up in your Google map and also search on the web for Florida counties which will provide you with a list of county maps. Miami-Dade County (Miami), Palm Beach County (Palm Beach) and so forth. There are affordable pockets in each county but that is realtive. What city state are you residing in now?
In terms of affordable counties near these areas requires a commute of 1 1/2 hours as the nearest lower cost county would be north of Palm Beach - Martin County is one and St. Lucie the next.
I have several friends who commute to Broward county who live in Ft. Pierce, in St Lucie countie - they commute just over 1 1/2 hrs. daily. See the property appraiser map:
http://www.propertyappraiser.com/