I have an issue with matplotlib and zipcodes. Can someone help (beginner)

I am relatively new to matplotlib.

I was wondering how I can show the actual value of the zipcodes instead of having them in ascending order.

For example, I wish to have the out 121 on the x axis. It seems that matplotlib gives me an estimate of the upper and lower range of zipcodes.

Sorry, I figured it out. I had to convert them from a list of numbers to a list of strings.