I was able to complete this by generating internal boundaries for Carrier Route data using Voronoi. the endpoints willto query for carrier routes exist inon boundaries-io.com herhere is a link to a blog where i figured it out...if this helps someone.
(I don't own this blog) https://longair.net/blog/2017/07/10/approximate-postcode-boundaries
Final zipcode 60630 with carrier boundaries generated:
disclaimer I work for boundaries-io.com