I recently posted about a little-used resource for researchers who had LDS church members in their family 1914-1960. This is the collection of LDS Church Censuses 1914-1960. The FamilySearch Wiki lists the contents of the censuses for each year. Each family in the worldwide church was counted beginning 1914, continuing every 5 years after 1920. 1945 there was no census taken because of the war.
I had known about this collection but never accessed it until this week. Here are images of the Franklin Thomas Pomeroy family in the 1914, 1925, and 1935 LDS Censuses.

There are columns for age, gender, priesthood office, marital status, and church record number. There is a category for “where born” with columns for Utah, Arizona, Europe, Asia, Islands of Pacific, and Unclassified. The Ward and Stake is also identified, which can lead one to other LDS church membership records, such as records of ordinances, minutes of meetings, and genealogical surveys.
Since U.S. federal censuses were taken every 10 years–1910, 1920, 1930, 1940–the LDS Censuses falling in-between those years are nice to have. Here is the 1925 census:

Notice that Sarah Matilda Pomeroy is enumerated with the family—she is Franklin’s mother—and the additional detail for “when born.” We also now have evidence of Sophia Isadora’s maiden name—Morris.
Here is the 1935 LDS Census:

Included in this census is the city or town of birth, and a street address. You might consider marking a map in Google Earth to show all the places where a family is known to have lived. Also, use the street view to take a walk around their neighborhood! It may have changed, but then again it may not have. At the bottom of each census for every year is, “checked with ward record by [signature].”
I am pretty enthused about this record group and plan to use them to launch into ward minutes and membership records next time I am in Salt Lake City. I expect to find details of my ancestors’ lives, such as service in callings and various ordinances received. If you have any LDS ancestry these church censuses might lead you down some interesting trails!