Tuesday, April 22, 2008

Where have all the Smiths gone?   posted by Razib @ 4/22/2008 07:35:00 PM
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Statistical Modeling, Causal Inference, and Social Science asks where asks where all the Smiths have gone:
Sam Roberts writes,

In 1984, according to the Social Security Administration, nearly 3.4 million Smiths lived in the United States. In 1990, the census counted 2.5 million. By 2000, the Smith population had declined to fewer than 2.4 million.
Where did all the Smiths go from 1984 to 1990? I can believe it flatlined after 1990, but it's hard to believe that the count could have changed so much in 6 years.

Perhaps it's the difference between the SSA and Census methods of counting



Here's another explanation, it's the inverse of the phenomenon of those claiming Native American ancestry in the United States doubling in 10 years. Many Smiths were at one point Schmidts, who knows if some of them didn't revert now that WASP surnames aren't as value-added? I strongly suspect that the number of ethnic whites in the USA is overstated because those with mixed-ancestry emphasize the most non-traditional quanta of their heritage. That means if someone is 1/4 German & 3/4 English they might declare their ethnicity as German. I'll probably have to look up some social science on this question at some point....

Note: the rank of Schmidt increased in terms of rank by 33 from 1990 to 2000.

Update: I took a bunch of German names and their English or Anglicized variants and compared their ranks between 1990 and 2000. I'm sure that the trend you see is the combined result of the decrease in proportion of those with very common Anglo names because of the decline of the non-Hispanic white fraction as well as a moderate stream of new German immigrants. But who knows?

Smith - Schmidt +33
Shepard -37 Shafer +254
Baker -1 Becker +74
Miller +1 Muller +147
Taylor -3 Schneider +57
Hill +8 Berg +122
Miner -202 Bergman +2
Brown +1 Braun +176
Dyer -111 Farber +1090
Finch -115 Fink +183
Fox +19 Fuchs +613
Duke -78 Herzog -341
Hunter -23 Jaeger +631
Buck +18 Hirsch +241
Young -3 Jung +840
Hoover +39 Huber +126
Cook -4 Koch +79
King -5 Koenig +366
Cooper -2 Kruger +191
Long - Lang +43
Mason -14 Maurer +160
Butcher +68 Metzger +424
Piper -239 Pfeiffer +372
Knight -44 Ritter +161
Barber -41 Scherer +1029
Black -11 Schwartz +102
Roper -72 Seiler +137
Weaver +11 Weber +71
White -6 Weiss +131


Update II: Proportion of German Americans dropping faster than English Americans?

Update III: Took some Census 2000 data and produced this....

Ancestry First Ancestry Second Ancestry Total Ratio of First to Second Ancestry
German 30165672 12674039 42839711 2.38
Irish 19279211 11245588 30524799 1.71
English 16623938 7885754 24509692 2.11
Italian 12836020 2799547 15635567 4.59
French 4870907 3436659 8307566 1.42
Scottish 3142893 1747688 4890581 1.8
Dutch 2552688 1986681 4539369 1.28
Norwegian 3241637 1236088 4477725 2.62
Scotch-Irish 3283065 1036167 4319232 3.17
Swedish 2436825 1561478 3998303 1.56
Welsh 886139 867655 1753794 1.02
Danish 855797 574927 1430724 1.49
Portuguese 913859 259832 1173691 3.52
Greek 942723 210315 1153038 4.48
British 828089 207044 1035133 4
Swiss 535408 374661 910069 1.43
Austrian 433292 297044 730336 1.46
Finnish 435446 188073 623519 2.32
Scandinavian 308051 117048 425099 2.63
Belgian 217524 130754 348278 1.66
Sicilian 68290 16885 85175 4.04
Celtic 53438 12200 65638 4.38
British Isles 42137 7941 50078 5.31
Luxemburger 26378 18761 45139 1.41
Icelander 30388 12328 42716 2.46
Basque 32121 9690 41811 3.31


I think the ratio of First to Second ancestry is probably a pretty good sense out admixture/outmarriage rates. Look at the Welsh; not very distinct from other British Isles groups and far less numerous, ergo lots of second ancestry.

Update IV: Median age for people of English ancestry is 44. For German it is 37. Same with Irish. What's up with that?

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