OlavarrÃÂa is a city in the province of Buenos Aires, Argentina. It is the administrative seat of the OlavarrÃÂa Partido and has over 111,320 inhabitants, per the .
The settlement was officially founded on 25 November 1867, and named in honour of Colonel José ValentÃÂn de OlavarrÃÂa (1801âÂÂ1845), an early Argentine military leader.