Abstract: A server computer system receives handles a client request. The system determines a set of geographical coordinates associated with the request, and uses this coordinates as input into a traversable tree to determine a polygon identifier. The polygon identifier uniquely corresponds to and identifies one of second set of polygons that are non-overlapping versions of first set of polygons that are overlapping. The server computing system transmits a set of parameters that are associated with the one of the second set of polygons that corresponds to the polygon identifier retrieved through the traversable tree.