The first phase of house-listing and housing census along with collection of information for preparation of National Population Register in six more states gets underway today. The states are Haryana, Chattisgarh, Delhi, Punjab, Uttarakhand and Maharashtra.<br/><br/>The mammoth exercise—which will cover country's 1.2 billion population—began on the first of this month. So far, it has been undertaken in 16 states and union territories. Data collected during housing census would provide information on housing condition, household amenities like toilets and sanitation the assets possessed by the households including computers and cell phones. <br/><br/>Details such as name, date of birth, sex, present address, permanent address, names of father, mother and spouse will be gathered for creation of National Population Register by visiting each and every household. The entire exercise is scheduled to be completed by September this year. <br/>