[epolanski]

I'm not aware of any country not doing censuses regardless of their digitization.

Censuses aren't just counts, they are timestamps of lots of data (education, family, etc) which is often missing, not digitized or not available (you may graduate in a different country, you might be living with someone but not be married, etc).

There's also a privacy/anonimity issue, even when data is available it can be used for very little over than counting.