county_boundary
Returns the boundary of the US county as a multipolygon. The state name is not case sensitive.
The county boundary is identified by the state name (ie: WA) and county name (ie: Wahkiakum)
or county FIPS code (ie: 11)
Examples:
county_boundary('WA', 'King')
-- Result: "MULTIPOLYGON(...)"
county_boundary('SD', 'Minnehaha')
-- Result: "MULTIPOLYGON(...)"
county_boundary('WA', 33)
-- Result: "MULTIPOLYGON(...)"
county_boundary('SD', 99)
-- Result: "MULTIPOLYGON(...)"
text, c -> multipolygon