Keirsey is a renowned global company based in the United States that specializes in personality and temperament assessments. Founded by David Keirsey in 1958, the company has since become a leader in providing insights into human behavior and personality types. The company's headquarters are located in sunny Del Mar, California, on the west coast of the United States.

Keirsey offers a wide range of products and services to individuals and organizations, including the Keirsey Temperament Sorter and Keirsey Character Sorter, which are widely used to assess and understand personality types. These assessments help people gain self-awareness, improve communication, and enhance personal and professional relationships. Operating on a global scale, Keirsey has established a strong presence in various countries through partnerships, joint ventures, and subsidiaries.

They have collaborated with organizations in Europe, Asia, and other regions to cater to a diverse international clientele. Noteworthy subsidiaries include Keirsey Korea and Keirsey China, which serve as regional hubs. In terms of market position, Keirsey is one of the leading authorities in personality assessments and has gained immense popularity worldwide.

Their products and services are used by individuals, educational institutions, and businesses of all sizes. Keirsey faces competition from other companies offering similar assessments, such as Myers-Briggs Type Indicator and DISC assessments, but maintains a strong standing due to its well-established reputation and comprehensive range of offerings. Over the years, Keirsey has received numerous accolades and achievements for its contributions to the field of personality psychology.

The development of the Keirsey Temperament Sorter and the success of their publications, including the book Please Understand Me, have significantly contributed to the brand's growth. Currently, Keirsey continues to provide its assessments and resources to a global audience. The company pays close attention to emerging trends and technologies, and regularly updates its products and services to stay relevant in the dynamic market.

Keirsey's commitment to understanding human behavior and improving individuals' lives remains central to its mission