Precinct numbering

All precincts in Marin County are five digits long.

Starting from the left, the first digit represents Supervisorial District: (1)0901.

• 1 – Supervisorial District 1
• 2 – Supervisorial District 2
• 3 – Supervisorial District 3
• 4 – Supervisorial District 4
• 5 – Supervisorial District 5

The second and third digits represent the City/Town: 1(09)01.

• 01 – Belvedere
• 02 – Corte Madera
• 03 – Fairfax
• 04 – Larkspur
• 05 – Mill Valley
• 06 – Novato
• 07 – Ross
• 08 – San Anselmo
• 09 – San Rafael
• 10 – Sausalito
• 11 – Tiburon
• 12 – Unincorporated

Last two digits are sequential numbering within Supervisorial District: 109(01).