Everything south of highway 92 to the Belmont and Foster City Border. Also included is the area known as the Highlands, which extends North of highway 92 to Crystal Springs Road to the Hillsbourgh border. In addition, all of the upper part of Parrott Drive, Tournament Drive and south including streets located in San Mateo. The border also covers the extreme North end of the College of San Mateo.

If you are unsure if you belong in San Mateo National, please email the league with your address and we will confirm your address in San Mateo National Little League territory.