Menlo Park, city, San Mateo County, western California; incorporated 1927. It is chiefly residential, with publishing and electronic equipment manufacturing industries. Located here are Menlo College (1927), Saint Patrick's Seminary (1894), and Stanford Research Institute or SRI International (1946). Settled in the 1850s, the city grew after the arrival of the railroad in 1863. It is named for Menlough, Ireland. Population 26,369 (1980); 28,040 (1990); 30,785 (2000).
