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The Counties file contains all counties in the U.S. as of the 1990 Census. This is a tab delimited ASCII text file with one line per record.There are 3,141 records.
The MCDs file contains all MCDs and CCDs (county subdivisions record type 060) places in the U.S. as of the 1990 Census and is tab delimited ASCII text with one line per record.There are 36,289 records.
The Place file contains all places in the U.S. and outlying areas (excluding MCDs and CCDs) as of the 1990 Census, and is a tab delimited ASCII text file with one line per record.There are 23,789 records. Some records contain special characters.
The 1990 Zip Code by State file is a comma delimited ASCII text file with one record per line. There are 29,470 records.
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