Census Data API: /data/2018/acs/flows/geography

Census Data API: FIPS Geographies in /data/2018/acs/flows/geography
Reference Date	Geography Level	Geography Hierarchy
4 items
N/A	N/A	(default geography)
2018-01-01	050	state› county
2018-01-01	060	state› county› county subdivision
2018-01-01	310	metropolitan statistical area/micropolitan statistical area