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Class Codes and Definitions

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.

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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


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Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: February 09, 2015