Censuses have been held in the Kingdom of Denmark at various intervals: 1767, 1787, 1801, 1834, 1840, 1845, 1850, 1855, 1860, 1870, 1880, 1890, 1901, 1906, 1911, 1916 and 1921. Additional censuses were held in 1885 and 1895 for Copenhagen and Frederiksberg only. Censuses in the Duchies of Schleswig and Holstein began in 1803 and were thereafter held in 1835, 1840, 1845, 1855 and 1860.

Most censuses were taken on February 1. The following list indicates the official enumeration dates for the various census lists and the areas they cover. The Danish word for census is Folketælling and each census is therefore often referred to as FT-1801 and FT-1845 etc.

The Danish censuses covers the following areas and dates:

Census	Date
FT-1769: Kingdom only	Aug. 15, 1769
FT-1787: Kingdom only	July 1, 1787
FT-1801: Kingdom only	Feb. 1. 1801
FT-1803: Schleswig and Holstein only	Feb. 13, 1803
FT-1834: Kingdom only	Feb. 18, 1834
FT-1835: Schleswig and Holstein only	Feb. 1, 1835
FT-1840: All Denmark	Feb. 1, 1840
FT-1845: All Denmark	Feb. 1, 1845
FT-1850: Kingdom only	Feb. 1, 1850
FT-1855: All Denmark	Feb. 1, 1855
FT-1860: All Denmark	Feb. 1, 1860
FT-1870: Kingdom only	Feb. 1, 1870
FT-1880: Kingdom only	Feb. 1, 1880
FT-1885: Copenhagen/Frederiksberg only	Feb. 1, 1885
FT-1890: Kingdom only	Feb. 1, 1890
FT-1895: Copenhagen/Frederiksberg only	Feb. 1, 1895
FT-1901: Kingdom only	Feb. 1, 1901
FT-1906: Kingdom only	Feb. 1, 1906
FT-1911: Kingdom only	Feb. 1, 1911
FT-1916: Kingdom only	Feb. 1, 1916
FT-1921: Kingdom (incl. North Schleswig)	Feb. 1, 1921
FT-1925: Kingdom (incl. North Schleswig)	Nov. 5, 1925
FT-1930: Kingdom (incl. North Schleswig)	Nov. 5, 1930
FT-1940: Kingdom (incl. North Schleswig)	Nov. 5, 1940
FT-1950: Kingdom (incl. North Schleswig)	Nov. 5, 1950

Regarding Sønderjylland / Schleswig

Following the Danish defeat to a Prussian-Austrian alliance in 'The Second Schleswig War' in 1864 the Duchies of Schleswig and Holstein were lost and soon incorporated in Prussia (from 1872 Germany). Censuses where hereafter held by the Prussian/German authorities. By the plebiscite in 1920 North Schleswig were recovered and Haderslev, Aabenraa, Sønderborg and Tønder counties are therefore included in the censuses from 1921 onwards.

Some information needs confirmation

At this moment it has not been posible to confirm the exact enumeration dates for the censuses of 1885, 1895, 1916, and 1921. Information concerning these censuses, as well as the Schleswig and Holstein censuses from 1864-1920, will be greatly appreciated.