It serves the populations of Aromas, Castroville, Prunedale, Royal Oaks, Elkhorn and Salinas.

Before 1978, North Monterey County students traveled to Salinas for high school.

In 1978, voters approved a bond measure to build the high school under the campaign slogan "Yes is Best".

In fall 1978, North County opened to a new student body that did not include a senior class.

The school has been recognized at the California Conference of Superintendents for its high Latino graduation rate.

The NMCHS marching band, directed by Barry Capiaux, has received attention for performances in China, Italy and Hawaii, and participation in President Clinton's second inaugural parade.