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Investigating the Overlooked

Region What Who For Analysis
Immigration Trends
Alameda County (CA)
Top countries of origin for this county's foreign-born population, decade by decade, 1900-1960 -- the same IPUMS NHGIS census tables behind Population Trends, read for country-of-birth instead of race. No comparable county-level series exists past 1960 in this data (same real gap Population Trends names for its own 1960-2023 span).
1960
238,263 foreign-born residents on file this year
United Kingdom
24,498
Asia
24,033
Portugal
22,601
Italy
22,191
Canada
21,740
1950
85,067 foreign-born residents on file this year
Other
16,042
Italy
8,363
Other European Countries
8,073
Canada - other
7,168
England and Wales
6,294
1940
82,781 foreign-born residents on file this year
Other
10,531
Italy
9,020
Canada (other)
7,169
England
6,948
Germany
6,096
1930
82,314 foreign-born residents on file this year
Italy
9,894
England
8,846
Canada
8,572
Germany
7,771
Portugal
7,286
1920
72,316 foreign-born residents on file this year
Portugal
7,880
Italy
7,599
Germany
7,422
England
7,216
Canada
5,942
1910
64,593 foreign-born residents on file this year
Germany
9,012
Portugal
7,619
Ireland
6,009
England
5,982
Italy
5,308
1900
41,090 foreign-born residents on file this year
Germany
6,106
Ireland
5,285
Other Colored >> Male
3,961
England
3,739
Canada (English)
2,757