Alto, CA: ZIP codes, distance and what to know

ZIP code in Alto

Alto ZIP code: 94941.

Distances are straight-line from Walnut Grove to the center of each ZIP code area. Residents, median year built and owner-occupied share are U.S. Census Bureau ACS 2018-2022 estimates for the ZIP code area. ZIP codes in Alto: those whose USPS city name is Alto (GeoNames) plus those whose area overlaps Alto (U.S. Census ZCTA-to-place relationship file); a ZIP code can belong to more than one city. Listing a ZIP code here does not mean service to every address in it.

About Alto

Alto is an unincorporated community (a census-designated place) in Marin County. The area of Alto is about 0.1 square miles; its population is about 659, or 5,069 per square mile. The name Alto is shared by 4 places across the country. This is the one in Marin County.

Around Alto

Next to and around Alto you will find Strawberry, Corte Madera, Tamalpais-Homestead Valley, Marin City, Larkspur, Tiburon, and Belvedere.

Green spaces in and around Alto: Horse Hill Open Space Preserve, Tiburon Ridge Open Space Preserve, Alto Bowl Open Space Preserve, and Camino Alto Open Space Preserve.

Public schools near the center of Alto include Edna Maguire Elementary, Mill Valley Middle, Strawberry Point Elementary, and Park Elementary.

Sources: OpenStreetMap contributors (neighborhoods, parks, museums), National Center for Education Statistics (public schools), CMS (hospitals). See also the Alto city guide.

The lay of the land

Ground elevation at the center of Alto is about 19 feet above sea level (USGS). Walnut Grove is at 7 feet below sea level, so the two sit at nearly the same elevation.

Housing in Alto

Alto has about 308 housing units, according to the Census Bureau. Half the homes date from 1949 or earlier. 65% of the housing is single-family detached houses. Where many homes are older, original springs, cables and openers are more likely to be near the end of their service life.

Housing figures: U.S. Census Bureau, American Community Survey 2018-2022 5-year estimates for Alto.

Alto in relation to Walnut Grove

Measured in a straight line, Alto is about 59 miles southwest of Walnut Grove. Road distance is longer, and it is one of the farther places on this site's list. Walnut Grove is in Sacramento County and Alto is in Marin County. Among the 284 places this site lists, Alto is number 267 by distance from Walnut Grove. On a map, Port Costa, Tara Hills, Montalvin Manor, and Rollingwood sit roughly between Walnut Grove and Alto. The places on this site's list closest to Walnut Grove are Courtland, Thornton, Isleton, and Hood.

Census Bureau ACS 2018-2022 estimates and USGS elevation.

About the repairs we do

These pages describe the repairs we do: off-track doors, broken spring replacement, emergency repair, snapped cables, and new garage doors. See the pricing page for starting prices. Whether we can reach your address is confirmed on the phone.

Close to Alto

These places sit nearest Alto and also have a page on this site:

• Mill Valley 1 mi
• Corte Madera 2 mi
• Marin City 2 mi
• Larkspur 2 mi
• Kentfield 3 mi
• Greenbrae 3 mi
• Belvedere 3 mi
• Santa Venetia 7 mi

To check whether garage door service reaches your Alto address, call the number above; dispatch can confirm it, and the exact price is confirmed before any work starts.

Prefer the Alto pages themselves? Go to the Alto page of our website.