Here is a quick tutorial on how to get all the repeaters in your area(It worked for me).
Make sure you followed the setup procedure for "Chirp" first which has you select your radio, and then download from your radio it's base setup. this will be the template / framework for the next step ( save a copy to a safe place before proceeding)
In "Chirp" on the menu bar select "Radio", under that select "Query Data Source" ,under that select "Repeater Book", and lastly under that select "Repeater Book Political Query". (Don't ask why they labeled it that way, it works though). You will then be shown a dialog box that will let you select the state, county and frequency band. from there follow the prompts an it will populate your screen with all you need.
Lastly, upload to your radio and give it a try, you can set your radio to scan it all, if there is activity on any of the repeaters, it will stop on it.