Providing demography information about your users will allow you to send targeted push notofication; ex: send a push notification at user birthday or only users from New York or any custom parameter.
It will also improve your Ad revenue through better targeting options.
Please ensure that you pass on the values for the fields which you collect, and have user consent to share this data.
Gender of the user.
The education level.
The date of birth of the user in YYYY-MM-DD format.
The year of birth of the user in YYYY format.
The age of the user.
Approximate annual household income (in US Dollars).
The postal code (Usually a 5 digit number).
The city of the user.
The area code (part of the telephone number).
Any additional relevant description of the user, or their preferences, separated by commas. Valid acceptable values are mentioned below:
Indicates a login ID and session ID in the website.
The marital status of the user.
The native language of the user (if known). Expected format is two letter code (ISO 639-1): "en" for English, "es" for Spanish, "de" for German, etc. For more examples. List of ISO 639-1 codes.
Whether the user has children: y or not: n.
Indicates Social Network IDs of the user.
Any additional description of the user