| lkA | for Roads (links of Type A). |
| alt | for Alternative Feature Names for Roads |
| add2 | for additional address matching information for Roads |
| zip | for ZIP+4 left and right information for Roads |
| lkB | for Railroads (links of Type B). |
| lkC | for Miscellaneous Ground Transportation (links of Type C). |
| lkD | for Landmark lines (links of Type D). |
| lkE | for Physical Features (links of Type E). |
| lkH | for Hydrography (links of Type H). |
| ctycu | for the County Current |
| cty00 | for the County 2000 |
| trtcu | for Tracts Current |
| trt00 | for Tracts 2000 |
| grpcu | for Block Groups Current |
| grp00 | for Block Groups 2000 |
| blkcu | for Census Blocks Current |
| blk00 | for Census Blocks 2000 |
| placecu | for Designated Places current |
| place00 | for Designated Places 2000 |
| cousubcu | for County Census Divisions current |
| cousub00 | for County Census Divisions 2000 |
| submcdcu | for sub-Minor Civic Divisions current |
| submcd00 | for sub-Minor Civic Divisions 2000 |
| vtd00 | for Voting Districts 2000 |
| aianhhcu | for Indian/Alaska native areas or Hawaiian Homelands (AIANHH) current |
| aianhh00 | for Indian/Alaska native areas or Hawaiian Homelands (AIANHH) 2000 |
| anrccu | for Alaskan Native Regional Corporations current |
| anrc00 | for Alaskan Native Regional Corporations 2000 |
| aitscu | for American Indian Tribal Subdivisions current. |
| aits00 | for American Indian Tribal Subdivisions 2000. |
| lpy | for Landmark polygons |
| lpy3 | for polygons which correspond to more than one landmark |
| lpy2 | for additional names for landmark polygons that have more than one name |
| lpt | for Landmark points |
| taz | for Traffic Analysis Zones |
| urb00 | for Census Coded Urban Areas, 2000 |
| puma1 | for 1% sample Public Use Micro Data Areas 2000 |
| puma5 | for 5% sample Public Use Micro Data Areas 2000 |
| concitcu | for Consolidated City current |
| concit00 | for Consolidated City 2000 |
| sdelmcu | for Elementary School Districts current |
| sdelm00 | for Elementary School Districts 2000 |
| sdseccu | for Secondary School Districts current |
| sdsec00 | for Secondary School Districts 2000 |
| sdunicu | for Unified School Districts current |
| sduni00 | for Unified School Districts 2000 |
| wat | for Water polygons |
| msa00 | or CMSA/MSA 2000 |
| pmsa00 | for PMSA 2000 |
| cdcu | for Current Congressional Districts |
| cd106 | for the 106th Congress Congressional Districts |
| cd108 | for the 108th Congress Congressional Districts |
| sldl | for State House Districts current |
| sldu | for State Senate Districts current |
| uga00 | for Oregon Urban Growth Area 2000 |
| zcta500 | for Zip5 Code Tabulation Areas 2000 |
| zcta5cu | for Zip5 Code Tabulation Areas current |
| zcta300 | for Zip3 Code Tabulation Areas 2000 |
| zcta3cu | for Zip3 Code Tabulation Areas current |
| cq | for correction count polygons |
| ctyec | for 2002 Economic Census County |
| placeec | for 2002 Economic Census Places |
| comreg | for 2002 Economic Census Commercial Regions |
| cbsacu | for 2002 Economic Census Core Based Statistical Areas (MeSAs and MiSAs) |
| csacu | for 2002 Economic Combined Statistical Areas |
| metdivcu | for 2002 Economic Census Metropolitan Divisions |
| necma00 | for 2002 Economic Census New England Metropolitan Areas |
| nectacu | for 2002 Economic Census New England City and Town Areas |
| cnectacu | for 2002 Economic Census Combined New England City and Town Areas |
