The Town Files

Portola Valley, California

Town in San Mateo County · population 4,456 (2020 Census)

Map: where Portola Valley is in CaliforniaPortola Valley
Median home
$2,000,001
Household income
$250,001
Jan low / Jul high
41° / 81°
Snow a year
0 in
Tornadoes ≤10 mi since 1950
2
Median age
60.6

Portola Valley is a town of 4,456 people in San Mateo County, California. The median home is worth $2,000,001, above the typical California town ($596,900). It ranks better for cycling than 99% of California towns, more upscale than 98% of California towns, better for retirees than 97% of California towns.

Portola Valley in our rankings:

How Portola Valley ranks

Percentile among California towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of California towns.

Portola Valley lifestyle rankings vs other California townsRetirement97th pctFamilies96th pctQuiet76th pctWalkability45th pctFirst-time buyersbottomYoung professionals81st pctVibrancy38th pctHip & trendy79th pctCollege town93rd pctUpscale98th pctVacation homesbottomSeaside characterbottomCycling99th pctTransit89th pctDriving4th pcttypical
The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025).

Homes and cost of living

The median home in Portola Valley is worth $2,000,001, above the typical California town ($596,900). Homes cost about 8.0 times the median household income of $250,001, which is more affordable than 28% of California towns. Median rent is $3,501 a month. 78.8% of households own their home.

Portola Valley vs San Mateo County vs typical California townPortola ValleySan Mateo CountyTypical California townHome value$2,000,001$1,559,600$596,900Household income$250,001$158,855$91,557Monthly rent$3,501$2,922$1,827
Census ACS 5-year estimates, 2020–2024. "Typical town" = median of California towns with 500+ people.
HousingPortola ValleyTypical California town
Median home value$2,000,001$596,900
Median rent$3,501$1,827
Median household income$250,001$91,557
Home value ÷ income8.0×6.4×
Homeownership78.8%67.4%
Median year built19661977
Seasonal / vacation homes0.0%—

Who lives in Portola Valley

PeoplePortola ValleyTypical California town
Median age60.640.2
Age 65 and over43.9%17.7%
Under 1819.1%—
Bachelor's degree or higher86.9%27.7%
Below the poverty line6.2%10.3%
Veterans5.7%—
Born outside the U.S.14.2%—
Work from home49.1%13.4%
Average commute19.3 min27.5 min
Homes with broadband96.3%93.3%

Weather in Portola Valley

July highs average 80.6°F and January lows 40.9°F. About 42.2 inches of rain and melted snow fall a year, with 0.0 inches of snow (typical California town: 0.0 in). Expect about 13 days a year at 90°F or hotter and 11 nights at or below freezing.

Portola Valley monthly temperatures and precipitation40°50°60°70°80°90°55°41°Jan55°40°Feb58°41°Mar62°43°Apr67°47°May75°52°Jun81°58°Jul81°59°Aug79°57°Sep71°52°Oct60°44°Nov54°40°DecPrecipitation (in)7.88.06.33.41.30.40.00.10.21.74.68.4
NOAA 1991–2020 climate normals: average daily high and low by month; precipitation and snowfall in inches. Temperatures from the Skyline Ridge Preserve station (4.5 mi away); snow from Palo Alto (7.5 mi).

Tornadoes, storms and disasters

2 tornadoes have passed within 10 miles of Portola Valley since 1950, compared with 2 for the typical California town. 1 rated (E)F2 or stronger. The strongest, an F2, struck on January 11, 1951 about 6.2 miles from the town center. The most recent was on May 5, 1998.

Tornadoes within 10 miles of Portola Valley by decade11950s01960s01970s01980s11990s02000s02010s02020s
NOAA Storm Events Database, tornado tracks (start to end point) passing within 10 miles of the town center, 1950–2026.

Severe weather in San Mateo County since 1996

Storm events in San Mateo County since 1996 by typeHeat16Flood64Dense Fog17High Surf31High Wind125Heavy Rain12Debris Flow27Flash Flood33
NOAA Storm Events Database, San Mateo County, 1996–2026 (all event types recorded since 1996). 37 deaths recorded.

San Mateo County has been included in 24 federal disaster or emergency declarations since 1953, most often for fire, flood, drought.

DeclaredIncidentDeclaration
April 3, 2023Severe StormDR-4699: Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides
March 10, 2023FloodEM-3592: Severe Winter Storms, Flooding, Landslides, And Mudslides
January 14, 2023FloodDR-4683: Severe Winter Storms, Flooding, Landslides, And Mudslides
January 9, 2023FloodEM-3591: Severe Winter Storms, Flooding, And Mudslides
August 22, 2020FireDR-4558: Wildfires

Jobs and pay in San Mateo County

San Mateo County had 416,422 jobs in 2024, paying an average of $196,441 a year. Unemployment was 3% in 2023; in Portola Valley itself the ACS puts it at 3.1%.

Largest industries in San Mateo CountyProfessional & technical serv…71,055 jobs · $269,835Health care & social assistan…47,203 jobs · $92,649Information43,524 jobs · $669,097Hotels & restaurants36,653 jobs · $44,003Retail29,358 jobs · $57,015Transportation & warehousing23,390 jobs · $87,011
BLS Quarterly Census of Employment and Wages, 2024, private-sector jobs and average annual pay.
Unemployment rate in San Mateo County, 2000–20230%2%4%6%8%10%2000200420082012201620202023San Mateo 3%
Annual average unemployment rate (BLS Local Area Unemployment Statistics via USDA ERS).

Public schools in Portola Valley

2 public schools with 503 students, about 14.0 students per teacher.

SchoolGradesStudentsPer teacher
Corte Madera4-825811.7
Ormondale ElementaryK-324517.5

Towns near Portola Valley

Portola Valley questions

Is Portola Valley, California a good place to retire?

On The Town Files lifestyle rankings, Portola Valley scores better for retirees than 97% of California towns and quieter than 76%. 43.9% of residents are 65 or older (median age 60.6).

How much does a house cost in Portola Valley?

The median owner-occupied home in Portola Valley is valued at $2,000,001 (Census ACS 2020–2024), against a median household income of $250,001, so homes cost about 8.0 times income. Median rent is $3,501 a month.

What is the weather like in Portola Valley?

July highs average 80.6°F and January lows 40.9°F (NOAA 1991–2020 normals). It gets about 42.2 inches of precipitation a year and 0.0 inches of snow.

Does Portola Valley get tornadoes?

2 tornadoes have passed within 10 miles of Portola Valley since 1950 (NOAA Storm Events); the strongest was a F2 on January 11, 1951. The typical California town has had 2.

How this page is made. Every number comes from public data, matched to Portola Valley's Census boundary (GEOID 0658380). Comparisons use the median of California towns with at least 500 people. Weather comes from the nearest NOAA normals station; storm counts use NOAA tornado tracks within 10 miles of the town center. Data snapshot 2026-11-12.