What did you do? I know there would probably be a lot of work that goes into it but I can't imagine the specifics.
Title: enumerator.
Starting a year out, ADDCAN, address canvassing. Literally walking every block to see if building at address the same, knock on doors letting folks know Census coming. In areas where entire subdivisions or apartment complexes built, might be a lot of new additions. Also identify churches (think homeless out reach), hospitals, dorms, nursing homes, hotels that have special handling (group quarters). And businesses that have 24 hour staff may be considered residence (including storage facilities, veterinary, etc.).
Hard to type this on phone, so will expand on computer tomorrow the rest if questions.
After ADDCAN, did GQ (group quarters prep). Then actual census.... TINSIL (counting homeless, including overnight visits to encampments, plus shelters, meal serving, etc.). And following up on every address that didn't respond, including those who might not speak/understand English, working with landlords to get information on tenants (civil penalties of $500/address for not responding).
Months later, I went back and was doing a number of surveys that US Census (Commerce Dept). Like housing, etc.