Hey, @jordankellett!
I tried checking the issue on your website, but an account is required.
Do you mind sharing more details about the issue so we can assist you further?
What happens if you try to add a Spanish zip code? Do you get an error message? If so, can you please share a screenshot of it?
To confirm, other zipcodes work normally, correct?
Furthermore, I’d like to understand your site properly. Please share with us the necessary information below for us to investigate the issue further:
System Status Report which you can find via WooCommerce > Status > Get system report > Copy for support.
Fatal error logs (if any) under WooCommerce > Status > Logs. Then you can use the selector to search for Fatal Errors.
You could copy and paste your reply here or paste it via https://gist.github.com/ and send the link here.
Looking forward to your reply.
Have a wonderful day!