US Census underway

Canvassers for the US Census Bureau will be visiting every housing unit in every neighborhood in the nation between April and July this year. The census workers will use hand held computers with Global Positioning System (GPS) technology to document the official identification and location of every residence. Census workers will wear official identification while performing their activities.
I saw two census workers doing this task,,,

,,.this afternoon on Hixville Road.
The national census is required by the US Constitution and is used to apportion representation in the House of Representatives and many other things. The first census was conducted in 1790. The census occurs every ten years.