[crooked-v]

> providing incorrect information is a crime and not answering is a crime. So I did nothing.

The correct answer in this case is to say "I don't know". You can write in stuff on census forms and it's up to the local office to process those as special cases.

[droithomme]

That's not something they say you can do.

In my case the correct answer was to do nothing, then cooperate with the enumerator on the short form questions, which as I said was fine.