My wife and I will be leaving in a few days and hopefully the weather will cooperate. The National Archives has drawer after drawer after drawer of beautiful census films. They are staffed by very helpful volunteers. You will find the NA place on the left before the Sand Point Naval Station. The several hundred yards of chain link fence will tip you off.
Onsite parking is available.
Call them to confirm hours if its snowing. It's definitely worth a visit. They have more on some states than others. We found Pennsylvania was excellent but Minnesota was scant. They also have census indexes and some microfilms.