You can google "community college <city> <state>" or "junior college <city> <state>" and it will show the city's area community colleges. For example Orlando, FL returns Velencia College. Go to their website, then go to "Future Students" page. Under "Financial Aid" select "Tuition Cost". It shows $390.96 per credit hour.
Then you can calculate 3-4 credit hours per course, and how many courses you are taking each semester. This is tuition only. You'll have to add books and supplies, room and board, etc.