Common in administrative notices, school documents, and signage.
本 ('this / our') functions like English 'this' or 'our' in formal compounds (
本校 'this school,'
本市 'this city,'
本店 'this shop') — it's the bureaucratic-style way to say 'the [unit] you are currently inside or in the catchment of.' Sounds detached and official; in conversation people just say
我们这个区 'our district.'
