Part of the West Welega Zone, Lalo Asabi is bordered on the south by Yubdo, on the west by Ayra Guliso, on the north by Boji, on the east by the Benishangul-Gumuz Region, and on the southeast by Gimbi.
The administrative center of this woreda is Inango; other towns in Lalo Asabi include Dongoro.
A survey of the land in Lalo Asabi shows that 80.39% is cultivated or arable, 5.26% pasture, 9.08% forest, and 5.26% infrastructure or other uses.
[4] Based on figures published by the Central Statistical Agency in 2005, this woreda has an estimated total population of 82,987, of whom 42,845 are men and 40,142 are women; 10,090 or 12.16% of its population are urban dwellers, which is greater than the Zone average of 10.9%.
The majority of the inhabitants were Protestant, with 64.51% reporting that as their religion, while 32.84% practiced Ethiopian Orthodox Christianity, and 1.28% Muslim.