The class (CLASSFP) code defines the current class of a geographic entity. These codes can be found in the TIGER/Line products, gazetteer files, and other products. The table below describes each code and which geographic entities each code is valid for.

Class Codes and Definitions [<1.0 MB]

Class Code	Class Code Description	Associated Geographic Entity
A1	Airport with scheduled commercial flights that also serves as a military installation	Locality Point, Military Installation
A3	Airport with scheduled commercial flights that does not serve as a military installation	Locality Point
A4	Airport without scheduled commercial flights that does not serve as a military installation	Locality Point
A6	Airport without scheduled commercial flights that serves as a military installation	Locality Point, Military Installation
B0	Post office, branch, or station	Locality Point
B3	Three-digit ZCTA	ZIP Code Tabulation Area (Three-Digit)
B5	Five-digit ZCTA	Zip Code Tabulation Area (Five-Digit)
C1	An active incorporated place that does not serve as a county subdivision equivalent	Economic Census Place, Incorporated Place
C2	An active incorporated place that is legally coextensive with a county subdivision but treated as independent of any county subdivision	County Subdivision, Economic Census Place, Incorporated Place
C3	Consolidated City	Consolidated City
C4	Alternate official common name for an incorporated place	Locality Point
C5	An active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent	County Subdivision, Economic Census Place, Incorporated Place
C6	An active incorporated place that partially is independent of any county subdivision and serves as a county subdivision equivalent or partially coextensive with a county subdivision but treated as independent of any county subdivision	Incorporated Place
C7	An incorporated place that is independent of any county	County or Equivalent Feature, County Subdivision, Economic Census Place, Incorporated Place
C8	The balance of a consolidated city excluding the separately incorporated place(s) within that consolidated government	Economic Census Place, Incorporated Place
C9	An inactive or nonfunctioning incorporated place	Economic Census Place, Incorporated Place
D0	Statistical or legal area administered and/or claimed by two or more American Indian tribes	American Indian/Alaska Native/Native Hawaiian Area
D1	Legal federally recognized American Indian area consisting of reservation and associated off-reservation trust land	American Indian/Alaska Native/Native Hawaiian Area
D2	Legal federally recognized American Indian area consisting of reservation only	American Indian/Alaska Native/Native Hawaiian Area
D3	Legal federally recognized American Indian area consisting of off-reservation trust land only	American Indian/Alaska Native/Native Hawaiian Area
D4	Legal state recognized American Indian area	American Indian/Alaska Native/Native Hawaiian Area
D5	The legal off-reservation trust land portion of an American Indian entity with both a reservation and trust land	American Indian/Alaska Native/Native Hawaiian Area
D6	Statistical American Indian area defined for a federally recognized tribe that does not have a reservation or off-reservation trust land, specifically, a tribal designated statistical area or Oklahoma tribal statistical area, but excluding Alaska Native village statistical area	American Indian/Alaska Native/Native Hawaiian Area
D7	A tribal subdivision	Tribal Subdivision
D8	The legal reservation portion of an American Indian entity with both a reservation and trust land	American Indian/Alaska Native/Native Hawaiian Area
D9	Statistical American Indian area defined for a state-recognized tribe that does not have a reservation or off-reservation trust land, specifically a state-designated tribal statistical area	American Indian/Alaska Native/Native Hawaiian Area
E1	Statistical area that represents the densely settled portion of an Alaska Native village; an Alaska Native village statistical area	American Indian/Alaska Native/Native Hawaiian Area
E7	Alaska Native Regional Corporation	Alaska Native Regional Corporation
F1	Legal Hawaiian home land consisting of land held in trust for the benefit of Native Hawaiians	American Indian/Alaska Native/Native Hawaiian Area
H1	An active county or equivalent feature	County or Equivalent Feature
H2	The balance of an active county or equivalent feature excluding the incorporated place(s) that separately qualify as Economic Census places	Economic Census Place
H3	The balance of an inactive county or equivalent feature excluding the incorporated place(s) that separately qualify as Economic Census places	Economic Census Place
H4	An inactive county or equivalent feature	County or Equivalent Feature
H5	A statistical county equivalent feature	County or Equivalent Feature
H6	A county that is coextensive with an incorporated place, part of an incorporated place, or a consolidated city and the government functions of the county are part of the municipal government	County or Equivalent Feature
H7	The balance of a statistical county equivalent feature excluding the incorporated place(s) that separately qualify as EC places	Economic Census Place
I1	An EC Place that is a whole Hawaiian Island	Economic Census Place
I2	An EC Place that is a balance of a Hawaiian Island	Economic Census Place
M1	A military or other defense installation that is not entirely within a census designated place	Locality Point, Military Installation
M2	A military or other defense installation entirely within a place	Census Designated Place, Economic Census Place, Military Installation
M3	Health care facility	Locality Point
M4	Federally managed park, forest, or other area	Locality Point, Park
M9	Federal facility not classified elsewhere	Locality Point
N1	National Guard installation	Locality Point, Military Installation
N9	International, state, tribal, or local government facility	Locality Point, Military Installation
R0	Park, forest, or other reserve not federally managed or unknown	Park
S1	A nonfunctioning county subdivision that is coextensive with a census designated place	County Subdivision
S2	A statistical county subdivision that is coextensive with a census designated place	County Subdivision
S3	A statistical county subdivision that is coextensive with a legal American Indian, Alaska Native, or Native Hawaiian area	County Subdivision
T1	An active county subdivision that is not coextensive with an incorporated place	County Subdivision, Economic Census Place
T2	An active county subdivision that is coextensive with a census designated place	County Subdivision
T5	An active county subdivision that is coextensive with an incorporated place	County Subdivision
T8	The balance of a county subdivision excluding the incorporated place(s) that separately qualify as Economic Places	Economic Census Place
T9	An inactive county subdivision	County Subdivision
U1	A census designated place with an official federally recognized name	Census Designated Place, Economic Census Place
U2	A census designated place without an official federally recognized name	Census Designated Place, Economic Census Place
U3	Alternate official common name for a census designated place	Locality Point
U4	Alternate official common name for a populated location within an incorporated place	Locality Point
U5	A census designated place that is coextensive with a county subdivision	Census Designated Place
U6	A populated place that is not a census designated or incorporated place having an official federally recognized name	Locality Point
U8	A populated place that is not a census designated or incorporated place that does not have an official federally recognized name	Locality Point
Z1	A nonfunctioning county subdivision	County Subdivision, Economic Census Place, Estate
Z2	A county subdivision that is coextensive with an American Indian, Alaska Native, or Native Hawaiian area and legally is independent of any other county subdivision	County Subdivision
Z3	A county subdivision defined as an unorganized territory	County Subdivision, Economic Census Place
Z4	A nonfunctioning or disorganized historical county subdivision no longer recognized by the Census Bureau	Locality Point
Z5	A statistical county subdivision	County Subdivision
Z6	Subminor civil division	Sub-Minor Civil Division
Z7	A county subdivision that is coextensive with a county or equivalent feature or all or part of an incorporated place that the Census Bureau recognizes separately	County Subdivision, Locality Point
Z8	A county subdivision that is legally coextensive with all or part of an incorporated place that the Census Bureau does not recognize	Locality Point
Z9	County subdivision not defined	County Subdivision