(I’m not OP but) Since there is only one entity, you would probably create a simple website redirect for the redundant lower level, and keep everything (web, em

(I’m not OP but) Since there is only one entity, you would probably create a simple website redirect for the redundant lower level, and keep everything (web, email) at the domain (the one that would have been a “county” anywhere else). E.g. sf.ca.gov