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Foster City aerial view, February 2018

FosterCA

A town of 32,792, settled in 1971. A typical home worth about $1.84M.

4 bordering townsMap →
Photo: Pi.1415926535 · CC BY-SA 3.0
Population
32,792
+10.6% since 2010
Typical home
$1.84M
+1.3% in a year
Household income
$199K
median
Median age
39.5
years
Jobs based here
19,316
Balanced

What makes Foster stand out

The 3 things Foster does most differently from other towns.

Picked automatically from the data
A growing town

Foster has grown 10.6% since 2010

30,567 people in 2010; 32,792 today.

30,5672010
33,8052020
32,792Today

U.S. Census 2010 & 2020 · ACS

Foster’s report card

See the data ↓

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The data

Ordered by what stands out in Foster. Another town gets a different order.

Housing

A typical Foster home is worth about $1.84M

The typical Foster home is worth about $1,835,000, up 1.3% in a year, 140% above the California typical home.

$1.84MZillow home value

Typical home value

Foster$1.84M
California$764K
Market temperature
Seller’s marketA strong seller's marketBuyer’sSeller’s
15
days on market
102.9%
sale-to-list price
+1.3%
value change, 1 year
24
homes sold in May
Zillow Home Value Index · Redfin Data CenterHousing market →
Schools

Foster’s public schools outperform 81% of California districts

The public schools Foster’s kids attend, from kindergarten through graduation, outperform 81% of California’s districts on state tests and graduation. Among towns with similar incomes, they sit near the middle.

A−School Grade
NCES · EDFacts · graded within CA on state tests and graduationAll 8 schools →
Work & commute

Most working residents commute out of Foster

Most working residents leave Foster for work: only 8% work in town. The top destinations are San Francisco (18%), San Mateo (8%) and Redwood City (5%). Half commute less than 14 miles.

8%work in town

Where working residents work

In Foster8%
San Francisco18%
San Mateo8%
Redwood City5%
San Jose5%
14 mi
median commute distance
19,316
jobs based in Foster
Balanced
jobs vs. working residents
Census LEHD 2023 · ACSCommute map →
Health

Healthier than 99% of U.S. towns

Foster beats the California average on 24 of 32 CDC measures and trails it on 0.

A+Health Grade
32 measures vs. California
24 better8 too close to call0 worse
What stands outFosterCA
Fewer uninsured adults3.6%10.6%
Fewer adults facing housing insecurity6.2%14.9%
San Mateo Medical Center
3.6 mi away · emergency room
None
primary care, dental or mental-health shortage
99th
percentile among CA towns
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →
Natural hazards

Very high risk, with inland flooding at the top

Expected storm and flood damage is higher than in 94% of U.S. communities.

94risk score of 100
FEMA risk score
94Very high riskLowerHigher
Inland floodingEarthquakes
10
paid flood claims since 1998
2
federal disasters paid out here
FEMA National Risk Index · OpenFEMANatural hazards →
Safety

Less crime per resident than 74% of U.S. towns

Foster reports less crime per resident than 74% of the U.S. towns and cities we grade.

B+Safety Grade

Violent crime per 1,000 residents

Foster0.7
California4.3
U.S.3.3

Property crime per 1,000 residents

Foster7.6
California18.2
U.S.15.5
74th
percentile among U.S. towns we grade
94th
percentile among CA towns
23
violent crimes reported in 2025
245
property crimes reported in 2025
FBI crime data, 2025 · crimes reported to policeFull safety report →
Climate

Mild winters, pleasant summers

Foster has warm winters and cool summers, with very little rain. A typical July afternoon reaches 72°, a January night drops to 44°, and snow is almost unheard of.

73°summer high

Typical low → high °F

Winter45–59°
Spring49–65°
Summer56–72°
Fall52–69°
+1.6°
vs. the 20th-century average
73°
typical summer high
NOAA U.S. Climate Normals, 1991–2020Full climate →
Outdoors

1.8% of Foster is conserved land

9.0 miles of trails across 25 parks and preserves.

1.8%conserved
Map of Foster: conserved land, trails and the top places to walk
Green: conserved land · dashed: trails · numbers: the places below
1.8%
conserved · 222 of 12,637 acres
9.0 mi
of trails · 0.5 per sq mi
Biggest places to walkTrailsAcres
1. Leo J Ryan Memorial Park2 mi20
2. Boothbay Park0.6 mi11
3. Catamaran Park0.4 mi6
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →

About Foster

City in California, United States

Official town website ↗

Foster City is a master-planned city located in San Mateo County, California, United States. Foster City is sometimes considered to be part of Silicon Valley for its local industry and its proximity to Silicon Valley cities. There are many notable companies headquartered in Foster City, such as Gilead Sciences, Zoox, and Replit. Visa and Sledgehammer Games were formerly headquartered in Foster City. The 2020 census put the population at 33,805, an increase of more than 10% over the 2010 census figure of 30,567. Foster City contains at least 10 bridges of which seven cross its lagoon, two go across Highway 92 and one is the San Mateo-Hayward Bridge which crosses the San Francisco Bay. Foster…

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Established
1971
Population
33,805
Area
20 sq mi
Elevation
7 ft
Area code
650

Foster’s neighbors

4 towns share a border with Foster.

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Photo of Foster

Foster, CA · Photo: Pi.1415926535 · CC BY-SA 3.0 · Source ↗