1851 United Kingdom census
The purpose behind asking for this information was to answer one of the critical questions of the time which was the rate and intensity of migration from rural to urban areas.The Government also conducted a census in England and Wales of churches and chapels, endowments, sittings, attendance at religious services on Sunday 30 March 1851 and average numbers during the preceding twelve months.[7] Since the 1841 Census the population of Ireland had dropped by 1.7 million due to mass starvation caused by the Great Famine, as well as emigration abroad.The additional information on ages and occupations permitted considerable contemporary analysis of the census data for England and Wales.Not only were 332 different occupations analysed by age group, but they were also correlated with death records from civil registration, allowing statisticians, led by William Farr, "to compare the living in each well defined occupation with the number dying registered at the corresponding ages; and thus to determine the influence of employment on health and life".The religious census returns (The National Archives, HO 129) are available to download free of charge as part of the Digital Microfilm project.