noun
town hall; village office; local government office
Refers to the administrative office of a town (町) or village (村). For city offices, 市役所 is more common.
住民票を取りに役場へ行った。
I went to the town hall to get a certificate of residence.
Compound of 役 (role, duty, office) and 場 (place). The reading やくば is a straightforward combination of the on'yomi of 役 and the kun'yomi of 場.