Finds the states that have sub-county FMR areas and fetches renter household counts in those states at the county subdivision level.
get_states_with_split_counties(processed_fmr)
get_acs_county_sub(year, processed_fmr)| processed_fmr | Data frame with processed FMRs  | 
    
|---|---|
| year | Year of the ACS data  | 
    
A data frame with renter household counts.
get_states_with_split_counties: Finds the states with sub-county FMRs