To add zip code collection to your survey, head over to the "New Question" interface:
Select "Zip Code" under the question format options:
Enter your prompt - this can be specific - such as a home or work zip code.
By default, the zip codes will be associated with the participant's home location. If you'd like to associate this as a work location, or other location type, you can change that in the question options:
Participants will see a question format on the front end like the following:
Like the location question type, all responses will be converted to a Lat/Long point at the center of the zip code and associated with the participant in the CRM.
See also: Collecting Participant Location