Checkout Usability - Autodetect “City” and “State” Inputs Based on the User’s Postal Code (28% of Mobile Sites Don’t)
Baymard’s large-scale UX testing, “Fully Automatic Address Lookup” proved to be the most effective and efficient way to reduce the burden of entering address information. 28% of mobile sites don’t provide a “Zip Code Autodetection” feature. At Etsy, the “City” and “State” fields are filled in once the zip code is entered.
