According to Ministry of Federal Affairs and Local Developme Champadevi has an area of 126.91 square kilometres (49.00 sq mi) and the total population of the municipality is 18613 as of Census of Nepal 2011.

[1][2] Palapu, Kalikadevi, Phediguth, Phulbari, Sagarmatha, Bilandu and Raniban, Sagarmatha which previously were all separate Village development committee merged to form this new local level body.

[1] At the time of the 2011 Nepal census, Champadevi Rural Municipality had a population of 18,661.

In terms of ethnicity/caste, 41.9% were Chhetri, 14.0% Magar, 6.8% Tamang, 6.3% Newar, 6.0% Hill Brahmin, 5.2% Sunuwar, 3.9% Damai/Dholi, 3.4% Kami, 3.1% Sarki and 9.4% others.

In terms of religion, 90.7% were Hindu, 7.9% Buddhist, 0.6% Christian, 0.2% Prakriti, 0.1% Muslim and 0.5% others.