| MyHeritage Family Trees | Family Trees | 794,798,565 |
| 1940 U.S. Federal Census Free! | Census and Voter Lists | 132,000,000 |
| 1930 United States Census New! | Census and Voter Lists | 125,157,587 |
| 1920 United States Census New! | Census and Voter Lists | 107,476,472 |
| 1910 United States Census New! | Census and Voter Lists | 100,923,846 |
| U.S. Social Security Death Index | Birth, Marriage and Death | 89,788,215 |
| 1900 United States Census New! | Census and Voter Lists | 76,492,496 |
| 1880 United States Census New! | Census and Voter Lists | 50,474,341 |
| California Birth Index | Birth, Marriage and Death | 49,192,472 |
| Find A Grave Free! | Birth, Marriage and Death | 48,569,600 |
| 1870 United States Census New! | Census and Voter Lists | 40,395,520 |
| Find A Grave Photos Free! | Birth, Marriage and Death | 29,144,268 |
| 1860 United States Census New! | Census and Voter Lists | 27,120,065 |
| Texas Marriages and Divorces | Birth, Marriage and Death | 22,474,202 |
| 1850 United States Census New! | Census and Voter Lists | 20,962,249 |
| California Death Index | Birth, Marriage and Death | 18,733,086 |
| Service Records of Confederate Soldiers Free! | Military Records | 11,793,114 |
| Revolutionary War Pension Records Free! | Military Records | 11,746,958 |
| US Property Owners Index and Maps | Historical Maps and Gazetteers | 9,294,430 |
| World War II Army Enlistment | Military Records | 8,866,786 |
| Lebanon Daily News (Lebanon,Pennsylvania) | Newspapers and Periodicals | 7,861,602 |
| Evening Independent (Massillon,Ohio) | Newspapers and Periodicals | 5,631,560 |
| Records of Germans Immigrating to the United States | Immigration and Travel | 4,068,907 |
| US Naturalization Records Free! | Immigration and Travel | 3,719,612 |
| Indiana Progress, The (Indiana,Pennsylvania) | Newspapers and Periodicals | 3,053,309 |
