To update the delivery address in the Postmates app, a user can follow a few straightforward steps. First, open the Postmates app on a mobile device. Next, navigate to the account section, which can typically be found by tapping on the icon that represents your profile or settings. From there, look for an option that mentions addresses or delivery settings. Users should find an option to edit or add a new delivery address. After entering the updated address, it is essential to save the changes. This ensures that future orders are delivered to the correct location. For any additional information or specific instructions, it is advisable to refer to the current Postmates website, where users can find detailed guidelines regarding their account management.