Alto, California

Alto: Located in Marin County at an elevation of 26 feet, this small unincorporated community sits in the low-lying foothills north of San Francisco near Richardson Bay.

About

Alto is a city located in the county of Marin in the U.S. state of California.

Quick Facts about Alto

State California (United States)
County Marin County
Latitude & Longitude 37.9044,-122.5255
Time Zone America/Los_Angeles
Local time 18:29:36 (6th November 2026)
Weather 47℉ Mostly Clear 7-days weather

Geography

Alto is located at 37°54'16"N 122°31'32"W (37.9043700, -122.5255300).

Alto map

Click "full screen" full screen map icon to open full mode. View satellite images

Weather

47°F
Mostly Clear
1 to 5 mph WNW Tonight

Mostly clear, with a low around 47. West northwest wind 1 to 5 mph.

7-Day Forecast
Blithedale

Nearby Schools and Colleges

Schools and campuses linked to Alto, CA. Select a name to open its map and contact details.

Code Name City ZIP
118347 College of Marin Kentfield (CA) 94904-2590

Nearby Transit Stations (46)

Rail and bus stations connected to Alto, CA. Select a station to open its map and address details.

Code Name Address Type
SFW San Francisco (Wharf), California Beach St. & The Embarcadero BUS
RIC Richmond station 1700 Nevin Avenue RAIL
SFV San Francisco (Civic Center), California 1150 Market Street BUS
SFC San Francisco (Ferry), California 101 The Embarcadero BUS
SFF San Francisco (Financial), California 5 Embarcadero Center BUS

Closest post offices linked to Alto.

Post Office Name City ZIP
Mill Valley Post Office Mill Valley (CA) 94941

Other places with the same name (2)

  • Alto, Georgia city in Banks and Habersham counties, Georgia, United States of America. with a population of 1,207 people.
  • Alto, Wisconsin civil town in Fond du Lac County, Wisconsin. with a population of 1,063 people.

Other cities in Marin County

Cities, towns, neighborhoods & other populated places in Marin County , CA.

City Name Population Title
San Rafael 58,528 The most populous city in Marin County, California.
Novato 53,351 A city in Marin County, California.
Mill Valley 14,323 City in Marin County, California, United States
San Anselmo 12,513 Town in California
Larkspur 12,236 City in California
Corte Madera 9,833 City in Marin County, California
Belvedere Tiburon 9,214 Town in Marin County, California
Fairfax 7,561 Town in California, United States
Sausalito 7,094 City in Marin County, California, United States
Kentfield 6,485 Census-designated place in Marin County, California
Santa Venetia 4,292 Census-designated place in Marin County, California
Ross 2,479 Town in California
Bolinas 1,620 Census-designated place in Marin County, California
Woodacre 1,348 Census-designated place in Marin County, California