L.B.
Here's a good place to start:
http://eclkc.ohs.acf.hhs.gov/hslc/HeadStartOffices#map-home
If your income is low enough, and/or you're working or a student you're eligible for services. Head start is 6 hours a day. Which is good if you need the extended hours. We opted for the 3 hour a day preschool at a public elementary school for our three year-old. It was great: and it didn't cost a penny! Good luck and just keep looking. You'll find something. But hurry! Most of the spots for fall are spoken for.