Title Category Subcategory Records
United States Marriages Life Events (BMDs) Civil Marriage & Divorce 214,136,509
US Census 1940 Census, Land & Surveys Census 133,308,831
US Census 1930 Census, Land & Surveys Census 123,949,387
US Census 1920 Census, Land & Surveys Census 107,126,211
United States, Passenger and Crew Lists Travel & Migration Passenger Lists 103,140,240
US Census 1910 Census, Land & Surveys Census 92,346,579
British & Irish Roots Collection Travel & Migration Migration 88,555,014
Social Security Death Index Life Events (BMDs) Civil Deaths & Burials 86,128,596
US Census 1900 Census, Land & Surveys Census 76,223,971
US Census 1880 Census, Land & Surveys Census 50,358,403
US Census 1870 Census, Land & Surveys Census 40,288,026
United States Obituary Notices Life Events (BMDs) Civil Deaths & Burials 38,369,657
US Census 1860 Census, Land & Surveys Census 27,120,064
World War I Draft Registration Cards Armed Forces & Conflict First World War 25,053,484
US Census 1850 Census, Land & Surveys Census 20,458,408
United States Billion Graves Index Life Events (BMDs) Civil Deaths & Burials 19,485,222
California Births, 1970-1995 Life Events (BMDs) Civil Births 13,425,340
Passenger Lists Leaving UK 1890-1960 Travel & Migration Passenger Lists 10,433,295
World War II Army Enlistment Records Armed Forces & Conflict Second World War 8,952,152
California, Death Record Index, 1940-1997 Life Events (BMDs) Civil Deaths & Burials 8,361,920