| Title | Category | Places | Record Count |
|---|---|---|---|
| Public Member Trees | Family Trees | 751,083,254 | |
| Ancestry World Tree | Family Trees | 467,671,004 | |
| U.S. Phone and Address Directories, 1993-2002 | Directories & Member Lists | USA | 313,282,101 |
| U.S. Public Records Index | Directories & Member Lists | USA | 300,098,489 |
| British Phone Books, 1880-1984 | Directories & Member Lists | United Kingdom; Ireland | 278,407,920 |
| Private Member Trees | Family Trees | 200,172,362 | |
| OneWorldTree | Family Trees | 192,141,453 | |
| 1930 United States Federal Census | Census & Voter Lists | USA | 124,450,859 |
| 1920 United States Federal Census | Census & Voter Lists | USA | 107,408,901 |
| 1910 United States Federal Census | Census & Voter Lists | USA | 93,399,001 |
| Social Security Death Index | Birth, Marriage & Death | USA | 85,350,486 |
| New York Passenger Lists, 1820-1957 | Immigration & Emigration | USA; New York | 82,905,466 |
| 1900 United States Federal Census | Census & Voter Lists | USA | 77,277,541 |
| England & Wales, Birth Index: 1916-2005 | Birth, Marriage & Death | England; Wales | 71,339,280 |
| England & Wales, Marriage Index: 1916-2005 | Birth, Marriage & Death | England; Wales | 64,341,477 |
| England & Wales, FreeBMD Birth Index, 1837-1915 | Birth, Marriage & Death | England; Wales | 62,795,416 |
| 1880 United States Federal Census | Census & Voter Lists | USA | 50,475,325 |
| England & Wales, FreeBMD Death Index: 1837-1915 | 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: 1837-1915 | Birth, Marriage & Death | England; Wales | 38,485,032 |
| Canadian Phone and Address Directories, 1995-2002 | Directories & Member Lists | Canada | 37,867,072 |
| Australian Electoral Rolls, 1903-1954 | Census & Voter Lists | Australia | 33,875,422 |
| British Army WWI Service Records, 1914-1920 | Military | United Kingdom; Ireland | 32,460,043 |
| 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 | 27,096,333 |
| 1881 England Census | Census & Voter Lists | England | 24,766,872 |
| California Birth Index, 1905-1995 | Birth, Marriage & Death | USA; California | 24,595,836 |
| World War I Draft Registration Cards, 1917-1918 | Military | USA | 24,016,021 |
| 1871 England Census | Census & Voter Lists | England | 21,396,275 |
| United States Obituary Collection | Birth, Marriage & Death | USA | 20,246,752 |
| 1850 United States Federal Census | Census & Voter Lists | USA | 20,053,649 |
| 1861 England Census | Census & Voter Lists | England | 18,450,421 |
| Texas Birth Index, 1903-1997 | Birth, Marriage & Death | USA; Texas | 17,102,315 |
| 1851 England Census | Census & Voter Lists | England | 16,443,348 |
| UK Incoming Passenger Lists, 1878-1960 | Immigration & Emigration | United Kingdom; Ireland | 16,298,329 |
| 1841 England Census | Census & Voter Lists | England | 14,767,527 |
| Quebec Vital and Church Records (Drouin Collection), 1621-1967 | Birth, Marriage & Death | Canada; France | 14,515,649 |
| 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 |
| U.S. Marine Corps Muster Rolls, 1798-1940 | Military | USA | 11,989,087 |
| Florida Marriage Collection, 1822-1875 and 1927-2001 | Birth, Marriage & Death | USA; Florida | 11,734,928 |
| California Marriage Index, 1960-1985 | Birth, Marriage & Death | USA; California | 9,801,323 |
| Sands Directories: Sydney and New South Wales, Australia, 1858-1933 | Directories & Member Lists | Australia; Australian Capital Territory; New South Wales | 9,731,017 |
| Iowa State Census Collection, 1836-1925 | Census & Voter Lists | USA; Iowa | 9,549,935 |
| Nevada Marriage Index, 1956-2005 | Birth, Marriage & Death | USA; Nevada | 9,502,628 |
| Public Member Photos & Scanned Documents | Pictures | United Kingdom; Ireland | 9,481,099 |
| 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 |
| Kansas State Census Collection, 1855-1925 | Census & Voter Lists | USA; Kansas | 8,238,269 |
| California Death Index, 1940-1997 | Birth, Marriage & Death | USA; California | 8,194,802 |
| U.S. Indian Census Schedules, 1885-1940 | Census & Voter Lists | USA | 7,559,854 |
| Canadian Passenger Lists, 1865-1935 | Immigration & Emigration | USA; Canada | 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 |
| U.S. World War II Draft Registration Cards, 1942 | Military | USA | 7,108,005 |
| Ohio Deaths, 1908-1932, 1938-1944, and 1958-2002 | Birth, Marriage & Death | USA; Ohio | 7,062,290 |
| London, England, Marriages and Banns, 1754-1921 | Birth, Marriage & Death | England; United Kingdom; London; Europe | 7,051,024 |
| North Carolina Birth Index, 1800-2000 | Birth, Marriage & Death | USA; North Carolina | 6,961,910 |
| Tennessee State Marriages, 1780-2002 | Birth, Marriage & Death | USA; Tennessee | 6,844,296 |
| U.S. Veterans Gravesites, ca.1775-2006 | Military | USA | 6,402,239 |
| U.S. Civil War Soldiers, 1861-1865 | Military | USA | 6,261,619 |
| Missouri Marriage Records, 1805-2002 | Birth, Marriage & Death | USA; Missouri | 5,968,956 |
| England & Wales Christening Records, 1530-1906 | Birth, Marriage & Death | England; Wales | 5,947,110 |
| Texas Divorce Index, 1968-2002 | Birth, Marriage & Death | USA; Texas | 5,906,148 |
| Kentucky Birth Index, 1911-1999 | Birth, Marriage & Death | USA; Kentucky | 5,859,532 |
| U.S. City Directories | Directories & Member Lists | USA | 5,859,510 |
| Selected U.S. Naturalization Record Indexes, 1791-1992 (World Archives Project) | Immigration & Emigration | USA | 5,736,589 |
| Minnesota Territorial and State Censuses, 1849-1905 | Census & Voter Lists | USA; Minnesota | 5,709,688 |
| 1901 Census of Canada | Census & Voter Lists | Canada | 5,343,565 |
| British Army WWI Medal Rolls Index Cards, 1914-1920 | Military | United Kingdom; Ireland | 5,280,584 |
| 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 |
| Biography & Genealogy Master Index (BGMI) | Reference Materials & Finding Aids | USA | 5,168,978 |
| Family Data Collection - Individual Records | Family Trees | 5,150,992 | |
| Sweden, Births from the Swedish Death Index, 1947-2006 | Birth, Marriage & Death | Sweden | 5,078,899 |
| Family Data Collection - Births | Family Trees | 5,069,728 | |
| Hamburg Passenger Lists, Handwritten Indexes, 1855-1934 | Immigration & Emigration | Germany; Hamburg; Stadt Hamburg; Europe | 5,000,000 |
| 1891 Census of Canada | Census & Voter Lists | Canada | 4,787,225 |
| Passenger and Immigration Lists Index, 1500s-1900s | Immigration & Emigration | USA; Canada | 4,712,722 |
| 1901 Scotland Census | Census & Voter Lists | Scotland | 4,470,512 |
| Border Crossings: From Canada to U.S., 1895-1956 | Immigration & Emigration | USA; Canada | 4,335,396 |
| PERiodical Source Index | Reference Materials & Finding Aids | USA; Canada | 4,302,950 |
| 1881 Census of Canada | Census & Voter Lists | Canada | 4,281,168 |
| California Passenger and Crew Lists, 1893-1957 | Immigration & Emigration | USA; California | 4,279,989 |
| Minnesota Birth Index, 1935-2002 | Birth, Marriage & Death | USA; Minnesota | 4,267,629 |
| U.S. Civil War Soldier Records and Profiles | Military | USA | 4,257,810 |
| American Civil War Soldiers | Military | USA | 4,252,125 |
| North Carolina Death Collection, 1908-2004 | Birth, Marriage & Death | USA; North Carolina | 4,212,021 |
| Florida State Census, 1867-1945 | Census & Voter Lists | USA; Florida | 4,131,298 |
| 1891 Scotland Census | Census & Voter Lists | Scotland | 3,973,948 |
| Florida Divorce Index, 1927-2001 | Birth, Marriage & Death | USA; Florida | 3,879,088 |
| 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 |
| Private Member Photos | Pictures | United Kingdom; Ireland | 3,806,262 |
| 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; Mexico; Mexico | 3,610,754 |
| U.S. Patent and Trademark Office Patents, 1790-1909 | Court, Land, Wills & Financial | USA | 3,577,054 |