swift - Are there frameworks available for geolocation polygon coordinates down to the town level? -

i'm using mapbox i've yet find way draw polygon regions programmatically coordinates come part of mapbox sdk. instance if want outline boundaries of houston, tx seen in image below. mapbox have coordinate library comes sdk? if so, how accessed?

no, support isn't there, can find other source of region data (say http://www.naturalearthdata.com or wikipedia) , add annotations, performant in 2.x version of sdk.