Orioles Primary LogoOrioles Alternate LogoOrioles Wordmark LogoOrioles Team MerchEstablished 1894 City Milwaukee – St. Louis – Baltimore League History 2000 – Present / Major League Baseball 1900 – 1999 / American League 1894 – 1900 / Western League Team History 1954 – Present / Baltimore Orioles 1902 – 1953 / St. Louis Browns 1894 – 1901 / Milwaukee Brewers Nickname …