The formal founding of UCSA was in 1954, with the first dinner honoring J.D. Oppenheimer, A.C. Toudouze, and H.B. Tuttle. Appointed Director, Charles Malloy, a Protestant Minister, provided leadership for local and area activities.

United Communities of San Antonio (UCSA) was established in 1954 as The National Conference of Christians and Jews. The work of UCSA was well known in San Antonio as early as the 1920's, as it responded to the schisms and fears evoked by the expression of bigotry and hatred present in those years.

The establishment of a National Brotherhood Day Observance, that later became a week-long observance, was endorsed by President Franklin D. Roosevelt and stirred the interest of  Dr. Hastings Harrison; a Protestant Minister in San Antonio of energy and considerable talent. He organized teams of three members each; a Catholic, a Protestant, and a Jewish representative who spoke briefly, frequently with humor, of the ideals of religious tolerance and understanding.

From interfaith to a community issues emphasis, UCSA now places high priority on youth oriented programs, as it responds to the concerns of all communities in the San Antonio region.

UCSA has developed a rich, distinguished history of service working to enhance inclusivity, respect, and justice in our community with an emphasis on developing and empowering youth, educators, and community leaders.

It is the intent of UCSA to make available a means to help the dialogue that is indispensable to the multi-cultural learning process, to reach out, understand, and respect the different cultural styles of our increasingly diverse region. Each program/workshop is tailored to meet the specific needs and goals of the participants and sponsoring organizations.

Diversity is more than just race and gender; it is also culture, religion, socio-economic, age, and mental/physical ability; i.e., the spectrum of human differences. Our programs address these issues using techniques, which draw on the experiences and perspectives of participants.