It used to be available in IPUMS international and no longer is.
Please update on the status of 2001 Nepal Census. It has been more than a year since the last response (Feb,2014).
IPUMS-International recently became aware of a problem with the weights in the 2001 Nepal Census data. Because the weights are necessary for generating representative statistics, until the weights are corrected, IPUMS-International does not feel comfortable providing the data for download. IPUMS-International is working on correcting the weights, but as of right now we do not have an estimated release date for the corrected data. I apologize if this has caused you any inconvenience.