In 1921, the team affiliated to APEA (Associação Paulista de Esportes Atléticos, "Paulista Association of Athletic Sports") and played their first match in São Paulo State's Campeonato Oficial de Futebol Amador (Amateur Football Official Championship").

In 1948, the club was Amateur FPF (Federação Paulista de Futebol) champion of its Region.

In 1963, the team was amateur champion of the last edition of Liga Barbarense de Futebol's Taça Cidade.

In 1977 and 1978, the club was not included in the Intermediate Division, created in 1977, so, União Barbarense did not play in any FPF competition.

União Barbarense play their games at Estádio Antônio Lins Ribeiro Guimarães, which has capacity to house 14,914 fans.

The correct name is Estádio Antônio Guimarães, but the spoken press prefers to call the Estádio Antônio Lins Ribeiro Guimarães, full name of patron and former president, by finding more "sound" and ended up being used by other professionals in the sports industry.

It was inaugurated on May 21, 1921 and in its first game União Barbarense beat EC Concórdia of Campinas 3-1.

For years the stadium was benefited by numerous reforms, such as the one that replaced the old wooden bleachers to until today standing concrete grandstands flanking Vila Aparecida and the numbered chairs located in the section near the walls of EE Américo Emílio Romi.

On October 5, 2012, the Praça de Esporte Antônio Lins Ribeiro Guimarães received the news that after 91 years, would have installed on its place a modern electronic scoreboard, after 30 years, requested by fans and media professionals.