The 1930 Mexico Census is available at From the Family website, “The Mexico 1930 census is the best source to quickly identify a family group and residence. The census for 1930 was conducted on 15 May. It was the first in which the census returns were processed centrally. Thanks to this innovation most of the sheets still survive. It is widely recognized as one of the best planned and competently executed Mexican census of the century. It is the only one that is accessible to the public.”