| Ireland, Petty Session Court Registers, 1818-1919 | 23,236,569 |
| England & Wales, National Probate Calendar (Index of Wills and Administrations), 1858-1995 | 20,503,036 |
| Free Access: Europe, Registration of Foreigners and German Persecutees, 1939-1947 (in German) | 19,420,808 |
| London, England, Land Tax Records, 1692-1932 | 12,773,671 |
| London, England, Workhouse Admission and Discharge Records, 1764-1921 | 10,098,399 |
| Ireland, Dog Licence Registrations, 1810-1926 | 7,358,408 |
| Czech Republic, Land Records, 1450-1889 (in Czech) | 4,112,405 |
| West Yorkshire, England, Select Land Tax Records, 1704-1932 | 3,899,907 |
| Northern Ireland, Valuation Revision Books, 1864-1933 | 3,193,180 |
| Former British Colonial Dependencies, Slave Registers, 1813-1834 | 3,178,595 |
| Ireland, Prison Registers, 1790-1924 | 3,127,594 |
| Denmark, Estate Records, 1436-1964 (in Danish) | 2,615,147 |
| UK, Extracted Probate Records, 1269-1975 | 1,976,605 |
| Surrey, England, Land Tax Records, 1780-1832 | 1,947,075 |
| Ireland, Valuation Records, 1824-1856 | 1,740,993 |
| Ireland, Poor Law and Board of Guardian Records, 1839-1920 | 1,738,323 |
| England & Wales, Criminal Registers, 1791-1892 | 1,556,259 |
| England, Criminal Lunatic Asylum Registers, 1820-1876 | 1,353,900 |
| Ireland, Griffith’s Valuation, 1847-1864 | 1,337,922 |
| Web: London, England, Proceedings of the Old Bailey and Ordinary's Accounts Index, 1674-1913 | 1,246,537 |
| Lancashire, England, Quarter Session Records and Petitions, 1648-1908 | 1,218,050 |
| UK, Land Tax Redemption, 1798 | 1,179,406 |
| UK, Prison Commission Records, 1770-1951 | 1,089,129 |
| Westminster, London, England, Poor Law Registers, 1561-1900 | 1,077,486 |
| Gloucestershire, England, Land Tax Records, 1713-1833 | 1,045,856 |
| UK, Register of Duties Paid for Apprentices' Indentures, 1710-1811 | 1,045,652 |
| Birmingham, England, Rate Books, 1831-1913 | 1,038,957 |
| Ireland, Casey Collection Indexes, 1545-1960 | 1,037,567 |
| Ireland, Abstracts of Wills and Marriages, 1620-1923 | 1,035,992 |
| England & Wales, Prerogative Court of Canterbury Wills, 1384-1858 | 1,012,964 |
| Luxembourg, Notarial Records, 1621-1821 (in German) | 964,845 |
| Perthshire, Scotland, Cess, Stent and Valuation Rolls, 1650-1899 | 894,998 |
| Glamorgan, Wales, Workhouse Registers, 1850-1920 | 882,714 |
| UK, Lunacy Patients Admission Registers, 1846-1921 | 842,355 |
| Ireland, Court of Chancery Records, 1633-1851 | 841,316 |
| Ireland, Indexes to Wills, Probate Administration, Marriage Bonds and Licences, 1591-1866 | 836,216 |
| UK, Calendar of Prisoners, 1868-1929 | 803,980 |
| East Frisia, Germany, Fire Insurance Registration, 1768-1937 (in German) | 747,180 |
| Třeboň, Czech Republic, Nobility Seignorial records, 1579-1859 (in Czech) | 722,757 |
| Edinburgh, Scotland, Extent Rolls, 1580-1847 | 714,184 |
| Ireland, Exchequer Court of Equity Bill Books, 1674-1850 | 688,470 |
| Scotland, National Probate Index (Calendar of Confirmations and Inventories), 1876-1936 | 654,826 |
| Dorset, England, Land Tax Returns, 1780-1832 | 646,167 |
| Ireland, Sustainability Loan Fund, 1812-1868 | 645,357 |
| Bedfordshire, England, Workhouse and Poor Law Records, 1835-1914 | 628,011 |
| West Yorkshire, England, Tax Valuation, 1910 | 616,598 |
| Ireland, Tithe Applotment Books, 1805-1837 | 606,726 |
| London, England, Selected Poor Law Removal and Settlement Records, 1698-1922 | 583,354 |
| Bedfordshire, England, Land Tax Records, 1797-1832 | 534,240 |
| Web: Ireland, Calendar of Wills and Administrations, 1858-1920 | 519,336 |
| London, England, Poor Law Hospital Admissions and Discharges, 1842-1918 | 512,961 |
| Diocese of Lichfield and Coventry, England, Indexes of Wills and Probate, 1518-1858 | 504,135 |
| Ireland, Encumbered Estates, 1850-1885 | 494,616 |
| London, England, Freedom of the City Admission Papers, 1681-1930 | 463,958 |
| UK, Criminal Records, 1780-1871 | 454,826 |
| Bedfordshire, England, Valuation Records, 1838-1929 | 451,819 |
| Web: Ulster, Ireland, Ulster Covenant, 1912 | 430,355 |
| West Yorkshire, England, Select Rate Books, Accounts and Censuses, 1705–1893 | 422,295 |
| Web: Northern Ireland, Will Calendar Index, 1858-1965 | 404,657 |
| Sibiu, Romania, Tax Registers, 1707-1724, 1754-1902, 1909 (in German) | 364,981 |
| Dorset, England, Jury Lists, 1825-1921 | 348,846 |
| West Yorkshire, England, Prison Records, 1801-1914 | 336,448 |
| Yorkshire, England, Quarter Session Records, 1637-1914 | 331,599 |
| Norfolk, England, Indexes to Wills, Probate, Administrations and Marriage Licence Bonds, 1371-1858 | 323,144 |
| Sutton, Surrey, England, Tax Collection Rate Books, 1783-1914 | 320,807 |
| London, England, Poor Law and Board of Guardian Records, 1738-1926 | 319,763 |
| Albstadt, Württemberg, Germany, Miscellaneous City Records, 1705-1850 (in German) | 312,616 |
| London, England, Overseer Returns, 1863-1894 | 294,833 |
| Wales, Wills and Probate, 1513-1858 | 282,099 |
| Schwäbisch Hall, Württemberg, Germany, Probate Records, 1803-1929 (in German) | 272,394 |
| British Chancery Records, 1386-1558 | 270,554 |
| UK, Registers of Habitual Criminals and Police Gazettes, 1834-1934 | 258,911 |
| London, England, Newgate Calendar of Prisoners, 1785-1853 | 257,953 |
| Dorset, England, Poor Law and Church of England Parish Records, 1511-1997 | 254,640 |
| Lithuania, Tax and Voters Lists, 1839-1949 (various years) | 252,776 |
| Warwickshire, England, Land Tax, 1773-1830 | 248,653 |
| Kraków, Poland, Jewish ID Card Applications During World War II, 1940-1941 (USHMM) (in German) | 243,106 |
| Passau, Bavaria, Germany, Miscellaneous City Records, 1700-1940 (in German) | 237,384 |
| Gloucestershire, England, Prison Records, 1728-1914 | 236,710 |
| North Lanarkshire, Scotland, Poor Law Applications and Registers, 1849-1917 | 230,468 |
| France, Civil and Military Pensions, 1836-1862 (Bulletin des Lois) (in French) | 221,365 |
| Medway, Kent, England, Poor Law Union Records, 1836-1937 | 217,679 |
| Russia, Duma Voter Lists, 1906-1907 | 217,187 |
| Dorset, England, Tithe Apportion and Maps, 1835-1850 | 210,787 |
| Surrey, England, Jury-Qualified Freeholders and Copyholders, 1696-1824 | 201,417 |
| UK, Prison Hulk Registers and Letter Books, 1802-1849 | 196,793 |
| London, England, Selected Rate Books, 1684-1907 | 186,366 |
| East Sussex, England, Wills and Probate, 1518-1858 | 183,021 |
| Web: Scotland, Prison Records Index, 1828-1878 | 173,186 |
| Lancashire, England, Index of Wills and Probates Proved at Richmond and Chester, 1600-1858 | 168,131 |
| Web: Scotland, General and Admission Registers for Asylums, 1858-1918 | 165,561 |
| Brittany, France Court Records, 1600-1790 (in French) | 159,942 |
| Ireland, Lord Viscount Morpeth's Testimonial Roll, 1841 | 158,389 |
| West Sussex, England, Wills and Probate, 1482-1858 | 155,661 |
| Ireland, Police Gazettes, 1861-1893 | 151,325 |
| Swansea and Surrounding Area, Wales, Poor Law Union Records, 1836-1916 | 148,073 |
| New South Wales, Australia, Convict Indents, 1788-1842 | 140,175 |
| Web: Scotland, High Court Criminal Indexes, 1790-1919 | 139,568 |
| Switzerland, Vaud Terrier Records, 1234-1798 (in French) | 138,906 |
| London, England, Wills and Probate, 1507-1858 | 135,186 |