|FIPS 55 class code - tag of and unclear purpose added by imports from official US sources|
|Used on these elements|
|Status: in use|
|Tools for this tag|
Meaning of that tag is unclear and it is dubious whatever it should be present on any object.
In http://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp2008/TGRSHP08.pdf it is defined as "Current FIPS 55 class code" and restricted to be string of (maximum?) length 2. FIPS 55 class codes seems to be defined at https://geonames.usgs.gov/domestic/fips55codedef.html