Table 4. Population Change by Source, Major Metropolitan Areas: 1940-1990

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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