File 02—File Linking Fields (comma delimited). These fields link File 02 with the geographic header. 

			Data
			dictionary
		Field name 	reference	Max	Data
			Name	size	type

	File Identification 		FILEID 	6 	A/N
	State/U.S. Abbreviation (USPS) 	STUSAB 	2 	A
	Characteristic Iteration 		CHARITER 	3 	A/N
	Characteristic Iteration File Sequence Number 	CIFSN 	2 	A/N
	Logical Record Number 		LOGRECNO 	7 	N


P2.	URBAN AND RURAL [6]	(Urban/Rural Update only)
	Universe:  Total population
	Total:				P0020001	02	9
		Urban:			P0020002	02	9
			Inside urbanized areas	P0020003	02	9
			Inside urban clusters	P0020004	02	9
		Rural				P0020005	02	9
		Not defined for this file	P0020006	02	9