This video shows how to build a Farmers Market search app based on a zip code. The app has two pages. The first page allows to search for farmers markets by entering a zip code. The second page shows details for a selected farmers market.
https://www.youtube.com/watch?v=uf7qEmSXIAo

Resources used:

• Farmers market API: http://search.ams.usda.gov/farmersmarkets/v1/svcdesc.html
• JavaScript used in the app: https://gist.github.com/maxkatz/b7a1938aa63e69097ca1