Record Layout for Census 2000 MCD/County-to-MCD/County
                       Worker Flow Files

Source:  U.S. Census Bureau, Population Division
Internet Release date:  July 25, 2003


Position    Name       Description

   1-2      Res_ST     FIPS State Code of Residence

   4-6      Res_CO     FIPS County Code of Residence

  8-12      Res_MCD    FIPS County Subdivision Code of Residence

                       bbbbb This field is blank except in CT, ME, MA, 
                             MI, MN, NH, NJ, NY, PA, RI, VT, WI


 14-17      Res_MSA    FIPS Metropolitan Statistical Area (MSA) or
                       Consolidated Metropolitan Statistical Area (CMSA)
                       Code of Residence

                       This field contains the 4-digit code for the MSAs
                       and CMSAs designated June 30, 1999.

                       9999 Appears for nonmetropolitan areas


 19-22      Res_PMSA   FIPS Primary Metropolitan Statistical Area (PMSA)
                       Code of Residence

                       This field contains the 4-digit code for the PMSAs
                       designated June 30, 1999.

                       9999 Not in a PMSA


 24-63      Res_Name   Residence County Subdivision and/or County name and 
                       State abbreviation

 66-68      Wrk_ST     Modified FIPS State Code or Foreign Country/Area
                       Code of Workplace

                       FIPS State codes have been extended to three 
                       characters by adding a leading zero.


 70-72      Wrk_CO     FIPS County Code of Workplace

                       000  Appears in conjunction with codes for workplaces   
                            outside the 50 states and DC. (The Puerto Rico     
                         files do contain codes for areas in Puerto Rico.)


 74-78      Wrk_MCD    FIPS County Subdivision Code of Workplace

                       bbbbb This field is blank except in CT, ME, MA, 
                             MI, MN, NH, NJ, NY, PA, RI, VT, WI


 80-83      Wrk_MSA    FIPS Metropolitan Statistical Area (MSA) or
                       Consolidated Metropolitan Statistical Area (CMSA)
                       Code of Workplace

                       This field contains the 4-digit code for the MSAs and
                       CMSAs designated June 30, 1999.

                       9999 Appears for nonmetropolitan areas

                       bbbb This field is blank for workplaces outside
                            the 50 states and DC. (The Puerto Rico files 
                            do contain codes for areas in Puerto Rico.)


 85-88      Wrk_PMSA   FIPS Primary Metropolitan Statistical Area (PMSA)
                       Code of Workplace

                       This field contains the 4-digit code for the PMSAs
                       designated June 30, 1999.

                       9999 Not in a PMSA

                       bbbb This field is blank for workplaces outside
                            the 50 states and DC. (The Puerto Rico files 
                            do contain codes for areas in Puerto Rico.)


 90-129     Wrk_Name   Workplace County Subdivision and/or County name and 
                       State abbreviation or other workplace area name

132-139     Count      Number of Workers 16 years old and over in the commuter 
                       flow (Right justified; blank filled)