Place of Work--MSA Level--For the United States:  1990 Census
+--------------------------------------------------+---------------------+
|Place of Work--MSA Level                          |     Number  Percent |
+--------------------------------------------------+---------------------+
|    Workers 16 years and over.................... |115,070,274    100.0 |
|Living in an MSA................................. | 91,515,002     79.5 |
|  Worked in MSA of residence..................... | 82,808,059     72.0 |
|    Central city................................. | 43,286,226     37.6 |
|    Remainder of this MSA........................ | 39,521,833     34.3 |
|  Worked outside MSA of residence................ |  8,706,943      7.6 |
|    Worked in a different MSA.................... |  7,415,334      6.4 |
|      Central city............................... |  3,185,340      2.8 |
|      Remainder of different MSA................. |  4,229,994      3.7 |
|    Worked outside any MSA....................... |  1,291,609      1.1 |
|Not living in an MSA............................. | 23,555,272     20.5 |
|  Worked in an MSA............................... |  2,894,502      2.5 |
|    Central city................................. |  1,389,658      1.2 |
|    Remainder of MSA............................. |  1,504,844      1.3 |
|  Worked outside any MSA......................... | 20,660,770     18.0 |
+--------------------------------------------------+---------------------+

Place of Work--MSA Level--For the United States:  1980 Census
+--------------------------------------------------+---------------------+
|Place of Work--MSA Level                          |     Number Percent  |
+--------------------------------------------------+---------------------+
|    Workers 16 years and over.................... | 96,672,203      ... |
|       Workers who reported a place of work...... | 88,382,539    100.0 |
|Living in an MSA................................. | 67,902,842     76.8 |
|  Worked in MSA of residence..................... | 63,125,884     71.4 |
|    Central city................................. | 33,569,902     38.0 |
|    Remainder of this MSA........................ | 29,555,982     33.4 |
|  Worked outside MSA of residence................ |  4,776,958      5.4 |
|    Worked in a different MSA.................... |  3,673,412      4.2 |
|      Central city............................... |  1,644,073      1.9 |
|      Remainder of different MSA................. |  2,029,339      2.3 |
|    Worked outside any MSA....................... |  1,103,546      1.2 |
|  Not reported................................... |  6,526,116      ... |
|Not living in an MSA............................. | 20,479,697     23.2 |
|  Worked in an MSA............................... |  1,991,026      2.3 |
|    Central city................................. |    859,986      1.0 |
|    Remainder of MSA............................. |  1,131,040      1.3 |
|  Worked outside any MSA......................... | 18,488,671     20.9 |
|  Place of work not reported..................... |  1,763,548      ... |
+--------------------------------------------------+---------------------+
...  Not applicable.

Source:  1990 Census of Population, STF3C.
Source:  1980 Census of Population, STF3C.
Contact:  Journey-to-Work and Migration Statistics Branch, Population
          Division, U.S. Bureau of the Census, (301) 457-2454.