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Investigating the Overlooked

Region What Who For Analysis
Immigration Trends
Philadelphia County (PA)
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
582,468 foreign-born residents on file this year
Italy
128,537
U.S.S.R.
110,661
United Kingdom
61,202
Ireland (Eire)
58,008
Poland
56,523
1950
235,514 foreign-born residents on file this year
The U.S.S.R.
53,906
Italy
48,721
Ireland (Eire)
24,203
Poland
20,281
Germany
19,736
1940
292,202 foreign-born residents on file this year
Russia (U.S.S.R.)
66,585
Italy
59,079
Germany
27,286
Irish Free State (Eire)
24,826
Poland
23,737
1930
368,624 foreign-born residents on file this year
Russia
80,959
Italy
68,156
Germany
37,923
Irish Free State
31,359
Poland
30,582
1920
397,927 foreign-born residents on file this year
Russia
95,744
Ireland
64,590
Italy
63,723
Germany
39,766
Poland
31,112
1910
384,076 foreign-born residents on file this year
Russia
90,696
Ireland
83,187
Germany
61,467
Italy
45,308
England
36,530
1900
359,364 foreign-born residents on file this year
Ireland
98,427
Germany
71,319
England
36,752
Other Colored >> Female
33,807
Other Colored >> Male
30,217