| Title | Category | Places | Name Count Estimate |
|---|---|---|---|
| Ancestry World Tree | Family Trees | 467,671,004 | |
| Public Member Trees | Family Trees | 415,713,893 | |
| U.S. Phone and Address Directories, 1993-2002 | Directories & Member Lists | USA | 862,075,337 |
| British Phone Books, 1880-1984 | Directories & Member Lists | United Kingdom; Ireland | 278,407,920 |
| OneWorldTree | Family Trees | 192,141,453 | |
| 1930 United States Federal Census | Census & Voter Lists | USA | 124,450,859 |
| Private Member Trees | Family Trees | 109,439,127 | |
| 1920 United States Federal Census | Census & Voter Lists | USA | 107,408,900 |
| 1910 United States Federal Census | Census & Voter Lists | USA | 93,399,001 |
| New York Passenger Lists, 1820-1957 | Immigration & Emigration | USA | 82,888,619 |
| Social Security Death Index | Birth, Marriage & Death | USA | 82,731,610 |
| 1900 United States Federal Census | Census & Voter Lists | USA | 77,277,541 |
| England & Wales, FreeBMD Birth Index: 1837-1983 | Birth, Marriage & Death | England; Wales | 69,692,018 |
| 1880 United States Federal Census | Census & Voter Lists | USA | 50,475,325 |
| England & Wales, FreeBMD Death Index: 1837-1983 | Birth, Marriage & Death | England; Wales | 42,329,710 |
| 1870 United States Federal Census | Census & Voter Lists | USA | 40,325,362 |
| England & Wales, FreeBMD Marriage Index: 1837-1983 | Birth, Marriage & Death | England; Wales | 38,485,032 |
| Canadian Phone and Address Directories, 1995-2002 | Directories & Member Lists | Canada | 94,272,273 |
| 1901 England Census | Census & Voter Lists | England | 30,580,800 |
| 1860 United States Federal Census | Census & Voter Lists | USA | 27,483,658 |
| 1891 England Census | Census & Voter Lists | England | 27,094,578 |
| 1881 England Census | Census & Voter Lists | England | 24,766,872 |
| California Birth Index, 1905-1995 | Birth, Marriage & Death | Usa; California | 24,595,838 |
| World War I Draft Registration Cards, 1917-1918 | Military | USA | 38,387,110 |
| 1871 England Census | Census & Voter Lists | England | 21,401,739 |
| England & Wales, Birth Index: 1984-2005 | Birth, Marriage & Death | England; Wales | 20,890,343 |
| 1850 United States Federal Census | Census & Voter Lists | USA | 20,053,649 |
| 1861 England Census | Census & Voter Lists | England | 18,459,883 |
| United States Obituary Collection | Birth, Marriage & Death | USA | 128,388,810 |
| Texas Birth Index, 1903-1997 | Birth, Marriage & Death | Usa; Texas | 51,306,945 |
| 1851 England Census | Census & Voter Lists | England | 16,424,800 |
| 1841 England Census | Census & Voter Lists | England | 14,726,531 |
| Quebec Vital and Church Records (Drouin Collection), 1621-1967 | Birth, Marriage & Death | Canada; Quebec | 14,515,649 |
| Australian Electoral Rolls, 1901-1936 | Census & Voter Lists | Australia | 14,260,386 |
| England & Wales, Marriage Index: 1984-2005 | Birth, Marriage & Death | England; Wales | 21,301,156 |
| England & Wales, Death Index: 1984-2005 | Birth, Marriage & Death | England; Wales | 12,898,435 |
| Texas Marriage Collection, 1814-1909 and 1966-2002 | Birth, Marriage & Death | Usa; Texas | 12,788,875 |
| Florida Marriage Collection, 1822-1875 and 1927-2001 | Birth, Marriage & Death | Usa; Florida | 11,734,929 |
| U.S. Marine Corps Muster Rolls, 1798-1940 | Military | USA | 10,320,171 |
| California Marriage Index, 1960-1985 | Birth, Marriage & Death | Usa; California | 9,801,322 |
| Sands Directories: Sydney and New South Wales, Australia, 1861-1933 | Directories & Member Lists | Australia; Australian Capital Territory; New South Wales | 9,724,082 |
| Iowa State Census Collection, 1836-1925 | Census & Voter Lists | Usa; Iowa | 9,547,644 |
| Nevada Marriage Index, 1956-2005 | Birth, Marriage & Death | Usa; Nevada | 9,502,633 |
| U.S. IRS Tax Assessment Lists, 1862-1918 | Census & Voter Lists | USA | 8,850,878 |
| New South Wales, Australia, Unassisted Immigrant Passenger Lists, 1826-1922 | Immigration & Emigration | Australia; New South Wales | 8,434,424 |
| U.S. World War II Army Enlistment Records, 1938-1946 | Military | USA | 8,369,212 |
| California Death Index, 1940-1997 | Birth, Marriage & Death | Usa; California | 8,194,802 |
| U.S. Indian Census Schedules, 1885-1940 | Census & Voter Lists | USA | 7,559,853 |
| Canadian Passenger Lists, 1865-1935 | Immigration & Emigration | USA | 7,286,096 |
| Texas Death Index, 1903-2000 | Birth, Marriage & Death | Usa; Texas | 7,256,190 |
| 1911 Census of Canada | Census & Voter Lists | Canada | 7,223,678 |
| Ohio Deaths, 1908-1932, 1938-1944, and 1958-2002 | Birth, Marriage & Death | Usa; Ohio | 7,062,290 |
| North Carolina Birth Index, 1800-2000 | Birth, Marriage & Death | Usa; North Carolina | 10,442,865 |
| Tennessee State Marriages, 1780-2002 | Birth, Marriage & Death | Usa; Tennessee | 6,844,296 |
| Kansas State Census Collection, 1855-1915 | Census & Voter Lists | Usa; Kansas | 6,422,532 |
| U.S. Veterans Gravesites, ca.1775-2006 | Military | USA | 6,402,239 |
| U.S. Civil War Soldiers, 1861-1865 | Military | USA | 6,261,619 |
| U.S. World War II Draft Registration Cards, 1942 | Military | USA | 6,127,548 |
| Missouri Marriage Records, 1805-2002 | Birth, Marriage & Death | Usa; Missouri | 5,968,956 |
| England & Wales Christening Records, 1530-1906 | Birth, Marriage & Death | England | 17,841,330 |
| Texas Divorce Index, 1968-2002 | Birth, Marriage & Death | Usa; Texas | 11,812,296 |
| Kentucky Birth Index, 1911-1999 | Birth, Marriage & Death | Usa; Kentucky | 11,719,064 |
| Minnesota Territorial and State Censuses, 1849-1905 | Census & Voter Lists | Usa; Minnesota | 5,709,687 |
| 1901 Census of Canada | Census & Voter Lists | Canada | 5,343,565 |
| California Divorce Index, 1966-1984 | Birth, Marriage & Death | Usa; California | 5,221,282 |
| Florida Death Index, 1877-1998 | Birth, Marriage & Death | Usa; Florida | 5,187,074 |
| Family Data Collection - Individual Records | Family Trees | 20,603,968 | |
| Family Data Collection - Births | Family Trees | 15,209,184 | |
| Hamburg Passenger Lists, Handwritten Indexes, 1855-1934 | Immigration & Emigration | Germany; Hamburg; Stadt Hamburg; Europe | 5,000,000 |
| Biography & Genealogy Master Index (BGMI) | Reference Materials & Finding Aids | USA | 4,890,893 |
| British Army WWI Medal Rolls Index Cards, 1914-1920 | Military | United Kingdom; Ireland | 4,858,975 |
| 1891 Census of Canada | Census & Voter Lists | Canada | 4,787,225 |
| Passenger and Immigration Lists Index, 1500s-1900s | Immigration & Emigration | USA | 4,588,587 |
| 1901 Scotland Census | Census & Voter Lists | Scotland | 4,459,768 |
| Border Crossings: From Canada to U.S., 1895-1956 | Immigration & Emigration | USA | 4,335,396 |
| Minnesota Birth Index, 1935-2002 | Birth, Marriage & Death | Usa; Minnesota | 12,802,887 |
| American Civil War Soldiers | Military | USA | 4,252,125 |
| North Carolina Death Collection, 1908-2004 | Birth, Marriage & Death | Usa; North Carolina | 4,212,021 |
| 1891 Scotland Census | Census & Voter Lists | Scotland | 3,973,948 |
| Florida Divorce Index, 1927-2001 | Birth, Marriage & Death | Usa; Florida | 7,758,176 |
| 1860 U.S. Federal Census - Slave Schedules | Census & Voter Lists | USA | 3,859,287 |
| Boston Passenger Lists, 1820-1943 | Immigration & Emigration | Usa; Massachusetts | 3,816,791 |
| 1881 Scotland Census | Census & Voter Lists | Scotland | 3,728,098 |
| American Genealogical-Biographical Index (AGBI) | Reference Materials & Finding Aids | USA | 3,685,947 |
| Border Crossings: From Mexico to U.S., 1903-1957 | Immigration & Emigration | USA | 3,610,753 |
| 1871 Scotland Census | Census & Voter Lists | Scotland | 3,365,758 |
| Kentucky Death Index, 1911-2000 | Birth, Marriage & Death | Usa; Kentucky | 3,320,556 |
| Indiana Marriage Collection, 1800-1941 | Birth, Marriage & Death | Usa; Indiana | 9,737,469 |
| 1850 U.S. Federal Census - Slave Schedules | Census & Voter Lists | USA | 3,193,212 |
| Georgia Deaths, 1919-98 | Birth, Marriage & Death | Usa; Georgia | 3,166,686 |
| Ontario, Canada Marriages, 1857-1924 | Birth, Marriage & Death | Canada; Ontario | 3,120,263 |
| 1861 Scotland Census | Census & Voter Lists | Scotland | 3,084,236 |
| Seattle Passenger and Crew Lists, 1882-1957 | Immigration & Emigration | Usa; Washington | 3,044,593 |
| Pennsylvania 1910 Miracode Index | Census & Voter Lists | Usa; Pennsylvania | 3,015,682 |
| Slave Registers of former British Colonial Dependencies, 1812-1834 | Census & Voter Lists | United Kingdom; Ireland | 2,980,774 |
| Family Data Collection - Deaths | Family Trees | 2,961,137 | |
| New York Port, Ship Images, 1851-1891 | Immigration & Emigration | Usa; New York | 2,954,432 |
| U.S. Public Records Index | Directories & Member Lists | USA | 1,085,961,844 |
| Minnesota Death Index, 1908-2002 | Birth, Marriage & Death | Usa; Minnesota | 5,863,400 |
| 1851 Scotland Census | Census & Voter Lists | Scotland | 2,921,840 |