On January 26, 1978, five students, Ann Huling Mathews, Cindie Davis, Marilyn Burns, Jennifer McMillan and Amy Mathews, founded Sigma Alpha at the Ohio State University. Since that time, Sigma Alpha has become a national organization consisting of 60 collegiate chapters and 32 alumni chapters. Today, more than 11,000 members have been initiated into Sigma Alpha Sorority.
The sorority was named Sigma Alpha for "Sisters in Agriculture." The sorority's official colors are emerald and maize, the mascot is the baby bull, the official flower is the yellow chrysanthemum, and the symbolic jewel is the emerald. The motto is Cultivating Professional Women in Agriculture. The objective of Sigma Alpha is to promote its members' roles in all facets of agriculture.
Sigma Alpha is a member of the Professional Fraternity Association (PFA), a national organization of professional Greek letter organizations. Sigma Alpha Sorority is an affiliate of Agriculture in the Classroom, which is also the sorority's national philanthropy project. It belongs to the Consortium of Collegiate Agricultural Organizations.