Release Dates
| Countries | Censuses | Version |
|---|---|---|
| Release X, 2017: New and revised complete-count data | ||
| Great Britain (England, Scotland, and Wales) | 1851, 1861, 1891, 1901 | 1.0 |
| Great Britain (England, Scotland, and Wales) | 1881 | 3.0 |
| Great Britain (Scotland only) | 1871 | 1.0 |
| Sweden | 1910 | 1.0 |
| Release IX, 2016: New complete-count data | ||
| United States | 1850(a) | 1.0 |
| Release VIII, 2015: New and revised complete-count and sample data | ||
| Canada | 1911 | 1.0 |
| Great Britain (England and Wales) | 1911 | 1.0 |
| Denmark | 1787, 1801 | 1.0 |
| Iceland | 1703, 1729, 1910 | 1.0 |
| Iceland | 1901(b) | 2.0 |
| Sweden | 1880 | 1.0 |
| United States | 1880(a) | 3.0 |
| Release VII, 2012: New complete-count and sample data | ||
| Norway | 1910 | 1.0 |
| Sweden | 1890 | 1.0 |
| Sweden | 1900 | 2.0 |
| Great Britain linked samples | 1851 to 1881 | 1.0 |
| Release VI, 2011: New complete-count and sample data | ||
| Canada | 1852, 1891 | 1.0 |
| Iceland | 1801, 1901 | 1.0 |
| Norway | 1801 | 1.0 |
| Release V, 2010: Harmonized sample data and linked samples | ||
| Mecklenburg-Schwerin, Germany | 1819 | 1.0 |
| United States | 1850(b), 1860, 1870, 1880(b), 1900, 1910 | 1.0 |
| Norway linked samples | 1865 to 1900 | 1.0 |
| United States linked samples | 1850 to 1930 | 1.0 |
| Release IV, 2008: Revised complete-count data and harmonized sample data | ||
| Canada | 1871, 1881, 1901 | 2.0 |
| Great Britain (England, Scotland and Wales) | 1851 | 1.0 |
| Great Britain (England, Scotland and Wales) | 1881 | 2.0 |
| Norway | 1865, 1875, 1900 | 2.0 |
| Sweden | 1900 | 1.0 |
| United States | 1880(a) | 2.0 |
| Release III, 2006: Complete-count data and first release of harmonized sample data | ||
| Canada | 1871, 1881, 1901 | 1.0 |
| Great Britain (England, Scotland and Wales) | 1881 | 1.0 |
| Norway | 1865, 1900 | 1.0 |
| United States | 1880(a) | 1.0 |
| Release II, 2004: Harmonized Data Release | ||
| Canada | 1881 | 0.2 |
| Great Britain | 1881 | 0.2 |
| Norway | 1900 | 0.2 |
| United States | 1880(a) | 0.2 |
| Release I, 2001 | ||
| United States, 1880(a) | 1880(a) | 0.1 |
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