The following links are for census years 1841 - 1911  from the Danish National Archives.
 For more detail information about the censuses see their website  here.

 The censuses are organized according to each of the three islands and by town and rural
 areas on each island

 The following links are for US Census info 1920 - 1940 at familysearch.

 This is a list of inhabitants in the Danish West Indies approx. 1650-1825 collected by the
 genealogist Hugo Ryberg and edited by Rigmor de Vicq in 1945  source is the Danish
 Consulate at St. Thomas Virgin Islands
 List of Inhabitants   -     Name index begins on page 603