It lost territories on 20 June 1959 to establish the Diocese of Santa Cruz do Sul, on 15 August 1959 to the Diocese of Caxias, on 1 February 1971 to the Diocese of Caxias do Sul, on 2 February 1980 to establish the Diocese of Novo Hamburgo as its suffragan, on 10 November 1999 to establish the Diocese of Osorio as its suffragan, and on 2 July 2008 to establish the Diocese of Montenegro as its suffragan
In 2014, it pastorally served around 2,547,000 Catholics (74.4% of 3,423,000 total) on 13,530 km2 in 156 parishes and 739 missions with 359 priests (203 diocesan, 156 religious), 59 deacons, 1,450 lay religious (341 brothers, 1,109 sisters), and 44 seminarians.[citation needed]
Coadjutor Bishop: João Antônio Pimenta (21 February 1906 – 7 March 1911), Titular Bishop of Pentacomia (21 February 1906 – 7 March 1911); next Bishop of Montes Claros, Brazil (7 March 1911 – 20 July 1943)