How to make a city level drill down at Mapping function Or I need to add Geo extensions ?

[Coloful_Black]

Hello masters,

Want to see if I could replicate a State to City level drill down with my current Qlik mapping fictions.

something like this ( This is a country to city)

The demo link  https://sense-demo.qlik.com/sso/sense/app/eed1c69b-3675-41f8-a852-4f71de096e50/sheet/pRbH/state/anal...

Quick snapshot 

My Qlik account has a Map chart with these 6 layers...My data contains zip code, city name and county. If I need to have an additional extension to build that State to City drill down? 

Thanks

[Steven_Haught]