Census Bureau

Table 4. POPULATION CHANGE BY SOURCE, MAJOR METROPOLITAN AREAS: 1940-1990

(Areas defined by applying current MA standards to data from each census; population in thousands.)

  1940-50 1950-60 1960-70 1970-80 1980-90
TOTAL POPULATION OF MMAs
  AT START OF PERIOD
33,799 45,524 68,118 95,103 107,655
           
AMOUNT OF CHANGE DURING PERIOD          
           
Total intercensal change (moving boundaries) 11,725 22,594 26,985 12,552 25,065
  Natural increase (initial boundaries) 3,472 6,918 7,781 5,847 8,589
  Natural increase (all added territory) 610 1,682 1,572 469 854
  Residual, including net migration (initial boundaries) 2,526 3,395 3,492 291 4,090
  Residual, including net migration (all added territory) 761 1,993 1,684 1,100 694
  Net territorial growth 4,356 8,607 12,456 4,845 10,839
    MMAs of beginning of decade --          
      Mergers 671 1,264 1,679 1,149 3,915
      Other net additions 791 740 586 935 1,318
    New MMAs --          
      New MMAs (initial boundaries) 2,645 6,184 8,068 2,359 5,318
      Mergers with new MMAs 160 231 1,748 333 99
      Other net additions to new MMAs 89 189 375 68 190
           
PERCENT CHANGE (PERCENT
  OF INITIAL MMA POPULATION)
         
           
Total intercensal change (moving boundaries) 34.7 49.6 39.6 13.2 23.3
  Natural increase (initial boundaries) 10.3 15.2 11.4 6.1 8.0
  Natural increase (all added territory) 1.8 3.7 2.3 0.5 0.8
  Residual, including net migration (initial boundaries) 7.5 7.5 5.1 0.3 3.8
  Residual, including net migration (all added territory) 2.3 4.4 2.5 1.2 0.6
  Net territorial growth 12.9 18.9 18.3 5.1 10.1
    MMAs of beginning of decade --          
      Mergers 2.0 2.8 2.5 1.2 3.6
      Other net additions 2.3 1.6 0.9 1.0 1.2
    New MMAs --          
      New MMAs (initial boundaries) 7.8 13.6 11.8 2.5 4.9
      Mergers with new MMAs 0.5 0.5 2.6 0.4 0.1
      Other net additions to new MMAs 0.3 0.4 0.6 0.1 0.2
           
PERCENT DISTRIBUTION
  OF INTERCENSAL CHANGE
         
           
Total intercensal change (moving boundaries) 100.0 100.0 100.0 100.0 100.0
  Natural increase (initial boundaries) 29.6 30.6 28.8 46.6 34.3
  Natural increase (all added territory) 5.2 7.4 5.8 3.7 3.4
  Residual, including net migration (initial boundaries) 21.5 15.0 12.9 2.3 16.3
  Residual, including net migration (all added territory) 6.5 8.8 6.2 8.8 2.8
  Net territorial growth 37.2 38.1 46.2 38.6 43.2
    MMAs of beginning of decade --          
      Mergers 5.7 5.6 6.2 9.2 15.6
      Other net additions 6.7 3.3 2.2 7.5 5.3
    New MMAs --          
      New MMAs (initial boundaries) 22.6 27.4 29.9 18.8 21.2
      Mergers with new MMAs 1.4 1.0 6.5 2.7 0.4
      Other net additions to new MMAs 0.8 0.8 1.4 0.5 0.8

Source: U.S. Census Bureau, Population Division,
Population Distribution Branch

Authors: Richard L. Forstall and James D. Fitzsimmons
Last Revised: October 31, 2011 at 10:03:15 PM