|Type||Private women's Undergraduate, Co-educational Graduate|
|251 full-time/327 part-time|
|Postgraduates||2,873 men and women|
|Location||Boston, Massachusetts, U.S.|
|Affiliations||Colleges of the Fenway|
Simmons was founded in 1899 with a bequest by John Simmons, a wealthy clothing manufacturer in Boston. Simmons founded the college based on the belief that women ought to live independently by offering a Liberal Arts education for undergraduate women to integrate into professional work experience. Simmons is a member of the Colleges of the Fenway consortium, which also includes Emmanuel College, Wentworth Institute of Technology, Wheelock College, Massachusetts College of Pharmacy and Health Sciences, and Massachusetts College of Art and Design. Simmons absorbed Garland Junior College in 1976.
Simmons graduated its first African American student in 1914. Furthermore, Simmons was one of the few private colleges not to impose admission quotas on Jewish students for the first half of the 1900s.
The undergraduate program is women-centered, with approximately 1800 students enrolled in the 2012–2013 academic year. The graduate schools (Library and Information Science, Social Work, Health Sciences, Business Management, and an Arts and Sciences program that provides degrees in Education, Communications Management, Gender and Cultural Studies, Public Policy and Liberal Arts) are coed, and have about 3,000 students. The school's MBA program is the first in the world designed specifically for women.
In November 2014, the institution released an explicit policy on the acceptance of transgender students, claiming a strong tradition of empowering women and challenging traditional gender roles and a "rich history of inclusion." Its undergraduate program accepts applicants who are assigned female at birth as well as those who self-identify as women, making Simmons the third women-centered college in the United States to accept transgender women. Government documentation of gender is not required. Graduate programs are co-educational, so gender identity is not of concern.
Simmons College currently consists of two separate campuses located near the Back Bay Fens in Boston:
The Academic Campus is located at 300 The Fenway in the Longwood Medical Area. It is immediately adjacent to the Isabella Stewart Gardner Museum and the Boston Latin School. This campus currently consists of five buildings:
- One Palace Road
- Main College Building
- Beatley Library/Lefavour Hall
- Park Science Center
- School of Management Building (a recent green construction)
The Residence Campus is located one block from the main campus. It is near the Landmark Center and the Fenway and Longwood MBTA stations. The residence campus consists of 13 buildings centered on a grassy quad:
- Simmons Hall (Freshman and Sophomore housing)
- Dix Hall (Sophomore housing)
- Smith Hall (Senior housing, also houses Quadside lounge and mail-room)
- Arnold Hall (Junior housing)
- North Hall (Upperclassman and Graduate housing)
- Health Center and Residence Life Offices
- Holmes Sports Center
- South Hall (Wellness housing)
- Alumnae Hall (Multipurpose room)
- Bartol Dining Hall (also houses late-night dining service Bartol Late Night)
- Evans Hall (Senior housing)
- Mesick Hall (Freshman and Sophomore housing, renovated in 2010)
- Morse Hall (Freshman and Sophomore housing)
Most of the buildings on the residence campus serve as dormitories, but the campus also includes a large dining hall, a health center, a large fitness center, a public safety office, an auditorium, and several other facilities.
The principal academic units of Simmons College are:
- Undergraduate College
- College of Arts and Sciences Graduate Studies
- School of Library and Information Science (SLIS)
- School of Nursing and Health Sciences (SNHS)
- School of Management (SOM)
- School of Social Work (SSW)
Simmons College sponsors athletics teams in a variety of sports including basketball, crew, cross country, field hockey, lacrosse, soccer, softball, swimming & diving, tennis and volleyball. The mascots are the Sharks and the colors are blue and yellow. They compete as members of the NCAA Division III in the Great Northeast Athletic Conference (GNAC),the New England Women's and Men's Athletic Conference (NEWMAC) and the Eastern College Athletic Conference (ECAC).
Simmons has made several significant sustainability efforts. Former President Susan Scrimshaw signed the American College and University Presidents Climate Commitment (ACUPCC) as a formal commitment to eliminate campus greenhouse gas emissions over time. Furthermore, the School of Management is addressing sustainability in its curriculum as well as in building and resource-management programs. 
Simmons' environmental efforts earned the school a "C" on the College Sustainability Report Card 2010, published in Fall 2009 by the Sustainable Endowments Institute.
Simmons alumni include
- Denise Di Novi (born 1956), film producer
- Rehema Ellis, NBC News correspondent
- Dorothy Celeste Boulding Ferebee (1898–1980), class of 1920, African-American physician and activist
- David S. Ferriero (born 1949) Tenth Archivist of the United States
- Nnenna Freelon (born 1954), jazz singer
- Christine Heppermann, author and poet
- Gwen Ifill (1955–2016), class of 1977, journalist, television newscaster and author
- Louise Andrews Kent (1886–1969), author
- Gail Levin, class of 1969, art historian
- Elinor Lipman (born 1950), novelist
- Bertha Mahony (1882–1969), founder of The Horn Book Magazine
- Barbara Margolis (1929–2009), prisoners' rights advocate who served as the official greeter of New York City.
- Eleanor Milleville (1922–1991), American sculptor
- Catherine N. Norton (1941–2014), American librarian
- Bertha Reynolds (born 1914), American social worker
- Srinagarindra (1900–1995), Princess Mother of Thailand
- Susan Traverso (1983), President of Thiel College, former Provost of Elizabethtown College
- Suzyn Waldman, color commentator for the New York Yankees
- Allyson Schwartz, class of 1970, U.S. Representative Pennsylvania's 13th congressional district 2004–
- Ann M. Fudge, businesswoman, former CEO of Young & Rubicam
- Anne Williams Wheaton, class of 1912, publicist and first White House Associate Press Secretary
- Esther M. Wilkins (1916–2016), class of 1938, pioneer in the field of dental hygiene, teacher, and author of Clinical Practice of the Dental Hygienist
- Mary Elizabeth Wood, 1861–1931, librarian and lay missionary who actively promoted Chinese early education and librarianship
- Alex Wright, American writer and information architect
- Harry C. Bentley, founder and namesake of Bentley College served as professor of accounting.
- Nancy Bond, winner of a Newbery Honor, taught at the Simmons College Center for the Study of Children's Literature from 1979 to 2001.
- Dana Chandler, artist and activist.
- Gregory Maguire, author, professor and co-director at the Simmons College Center for the Study of Children's Literature from 1979–1985.
- Isadore Gilbert Mudge, librarian, part-time lecturer
- "History: About Simmons College". Simmons College.
- Massachusetts Colleges that have Closed, Merged, or Changed Names, Brown, Ray C., retrieved January 8, 2015
- "Simmons College Opens Its Doors to Trans Students". The Advocate.
- "Admission Policy for Transgender Students FAQ". Simmons.edu. Retrieved December 1, 2017.
- "Back Bay East". Boston Women's Heritage Trail.
- "Simmons College School of Management - LEED Gold". Lee Kennedy Co Inc. Retrieved December 4, 2017.
- "Environmental Commitments". Simmons College. Retrieved June 7, 2010.
- "Simmons College – Green Report Card 2010". Greenreportcard.org. June 30, 2008. Retrieved August 26, 2014.
- Fox, Margalit. "Barbara Margolis, Prisoners’ Advocate, Dies at 79", The New York Times, July 12, 2009. Accessed July 21, 2009.
- "In Memoriam: Catherine (Norris) Norton". Woods Hole Oceanographic Institution. Retrieved September 7, 2015.