| Geographic Availability | United States |
| Geographic Tiling | Country |
| Update Frequency | Quarterly |
| Character Set | UTF-8 |
| Datum | WGS84 (SRID = 4326) |
Format availability
| GIS | Esri Shapefile (SHP) MapInfo Extended TAB |
| Database-loadable | MySQL PostGIS |
| Non-spatial tables | CSV DBF MySQL Postgres |