California Institute of Technology
California, United States
Founded1891
Campus124 acres
Acceptance5.0%
Updated February 5, 2026
Overview
The California Institute of Technology (Caltech) is a private research university founded in 1891 as Throop University. Renamed in 1920, the institution has become a preeminent global center for scientific and engineering exploration. Caltech is characterized by its small size, rigorous academic standards, and an "unapologetic" focus on STEM (Science, Technology, Engineering, and Mathematics). Its mission is driven by a commitment to addressing modern global challenges through technological innovation and ethical scholarship.
The university maintains a small and highly selective student body, with fewer than 1,000 undergraduates and approximately 1,200 to 1,400 graduate students. This small scale facilitates an exceptional 3:1 student-to-faculty ratio. Caltech is organized into six primary academic divisions covering biology, chemistry, engineering, geological sciences, humanities and social sciences, and physics. All undergraduates must complete a rigorous Core Curriculum that provides a foundation across all major scientific disciplines.
Popular Programs
B.S.
Bachelor of Science in Applied and Computational Mathematics
B.S.
Bachelor of Science in Applied Physics
B.S.
Bachelor of Science in Astrophysics
B.S.
Bachelor of Science in Bioengineering
B.S.
Bachelor of Science in Biology
B.S.
Bachelor of Science in Business, Economics, and Management
Location
The California Institute of Technology is situated on a 124-acre campus in Pasadena, California. Located approximately 11 miles northeast of Los Angeles, the campus provides a suburban setting within reach of a major metropolitan hub. In addition to the main Pasadena campus, the university operates a global network of specialized facilities, including the Palomar and W. M. Keck Observatories, and the Chajnantor Observatory in Chile.
Caltech also manages the Jet Propulsion Laboratory (JPL) for NASA, which is the largest employer in Pasadena. Other significant off-campus locations include the Laser Interferometer Gravitational-wave Observatory (LIGO) and the Owens Valley Radio Observatory. These diverse locations allow the university to maintain a significant presence in the fields of astronomy, seismology, and space exploration.
Pasadena, United States
Campuses
Pasadena Campus
MainPasadena· United States
Campus Culture
Student life at Caltech is defined by the Honor Code, which states that "No member of the Caltech community shall take unfair advantage of any other member of the Caltech community." This culture of trust allows for unique academic freedoms, including take-home exams and 24-hour access to research facilities. Undergraduate life is centered around a residential house system consisting of 11 student houses and residence halls, which foster close-knit communities and long-standing traditions like the Fleming House cannon and the Dabney House pumpkin drop.
Despite the university's rigorous academic focus, the student body is highly active in extracurriculars. Approximately 80% of students participate in organized athletics, including 16 NCAA Division III varsity teams. The arts also play a significant role in campus life, with over 65% of students playing a musical instrument and many participating in various performing and visual arts programs. The community is diverse and international, with recent undergraduate classes including 14% first-generation college students and 16% from underrepresented groups.
Notable Alumni
Caltech's alumni and faculty are highly distinguished, having earned 48 Nobel Prizes (49 total prizes) and 68 National Medals of Science. Notable figures associated with the university include Nobelists Kip Thorne and Barry Barish, as well as Leroy Hood, the inventor of the DNA sequencer. The university's graduates are highly sought after in both academia and industry; nearly half of recent graduates pursue advanced degrees at prestigious institutions like Stanford, MIT, and Harvard.
Those entering the workforce report strong career outcomes, with median starting salaries ranging from $110,000 to $119,000. The university supports its students through the Career Advising and Experiential Learning (CALE) office, which provides resources for paths in entrepreneurship, medicine, and public service. The alumni network is also deeply involved in the university's entrepreneurial ecosystem, which has launched over 100 start-ups in the last decade.
Rankings
Caltech consistently ranks among the top universities in the world, maintaining a reputation for extreme academic prestige. It held the number one position in the Times Higher Education World University Rankings from 2012 to 2016. In the 2025–2026 rankings cycle, it remains a top-ten global institution, placing 10th in the QS World University Rankings and 9th in the Shanghai Ranking.
The university is also recognized for its excellence in interdisciplinary research, ranking 3rd in the Times Higher Education Interdisciplinary Science Rankings for 2026. U.S. News & World Report ranks Caltech 11th nationally. This high standing is supported by the university's highly competitive admissions process, which sees an acceptance rate of less than 5% and utilizes a rigorous evaluation system for standardized testing and academic achievement.
Research
Research is the cornerstone of the Caltech identity, with over 90% of undergraduates participating in research during their time at the Institute. A key component of this is the Summer Undergraduate Research Fellowships (SURF) program, which has allowed students to conduct independent research under faculty mentorship since 1979. The university is home to over 50 research centers and institutes, including the Beckman Institute, the Kavli Nanoscience Institute, and the Seismological Laboratory, which is the birthplace of the Richter scale.
Caltech is a leader in innovation, receiving more invention disclosures per faculty member than any other U.S. university. It manages the Jet Propulsion Laboratory (JPL) for NASA and operates LIGO, which famously first observed gravitational waves in 2016. Recent research initiatives include the AI4Science Initiative and the Center for Science, Society, and Public Policy. The university also fosters entrepreneurship through the Caltech Seed Fund, which deploys $1.5 million annually to commercialize Institute technology.