Terralocate

Browse / United States / California / Castro Valley

Castro Valley

CaliforniaCDP

Photograph of Castro Valley
Featured view

Castro Valley

Total population

65,947

Median home value

$1,141,100

44.9%

Bachelor's+

Median income

$145,276

Castro Valley$145k
National$74k

Air quality index

54Moderate
Elevation50 m
Land area43.82 km²
Weather88°F · Sunny
Coordinates37.71°, -122.06°

Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.

Loading additional data from public sources…0 / 11
CensusWikipediaWeatherPlacesPeopleEnvironmentHealth & SchoolsRelatedGeography & CultureLive MonitoringEvents & Gallery
0% complete
Active weather alerts
  • Coastal Flood Advisory · Minor
    Coastal Flood Advisory issued October 1 at 12:20PM PDT until October 2 at 6:00PM PDT by NWS San Francisco CA
  • Heat Advisory · Moderate
    Heat Advisory issued October 1 at 9:43AM PDT until October 4 at 10:00PM PDT by NWS San Francisco CA

Source: NOAA National Weather Service.

City facts

Elevation
50 m
Area
43.82 km²

Facts from Wikidata (CC0).

Overview

Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2020 census, it was the fourth most populous unincorporated area in California. The population was 66,441 at the 2020 census.

Read more on Wikipedia

History & geography

History

Before the arrival of European settlers the area was settled by the Chocheño (also spelled Chochenyo or Chocenyo) subdivision of the Ohlone Native Americans. With the arrival of Europeans, they established Mission San Jose in 1797. The area Castro Valley now occupies was part of the extensive colony of New Spain in what was the province of Alta California. Castro Valley was part of the original 28,000 acre (110 km) land grant given to Castro in 1840, called Rancho San Lorenzo. This land grant included Hayward, San Lorenzo, and Castro Valley, including Crow Canyon, Cull Canyon, and Palomares Canyons. Castro had a gambling habit and had to sell off portions of his land to pay gambling debts. The last of his holding was sold in a sheriff's sale in 1864 to Faxon Atherton for $400,000. Atherton (after whom the town of Atherton is named

Geography

Lake Chabot lies in the northwestern section of Castro Valley. Directly to the west is San Leandro. Hayward is to the south. Dublin, Pleasanton, and San Ramon are to the east. The eastern hills of Castro Valley constitute the headwaters of the San Lorenzo Creek watershed and the origin of several creeks that flow into San Lorenzo Creek: Bolinas, Castro Valley, Chabot, Crow, Cull, Eden, Hollis, Kelly Canyon, Norris, and Palomares Creeks.

Read full article on Wikipedia

Excerpted from the corresponding Wikipedia article (CC BY-SA).

Demographics & economy

Median age
40.5
Median home value
$1,141,100
Housing units
21,718
Poverty rate
4.5%
Unemployment
4%

Race & ethnicity

White
33.4%
Black
5.6%
Asian
35.7%
Hispanic
22.5%

Source: US Census Bureau — American Community Survey, 5-year estimates.

Geography

Latitude
37.7083
Longitude
-122.0628
Water area
0.22 mi²
View on OpenStreetMap

Coordinates & boundaries from the US Census TIGER/Line shapefiles.

Climate

Current forecast

This Afternoon
88°F
Sunny
Tonight
59°F
Partly Cloudy
Friday
87°F
Partly Sunny
Friday Night
63°F
Mostly Cloudy
Saturday
93°F
Sunny
Saturday Night
66°F
Mostly Clear

Forecast for Castro Valley, CA from NOAA NWS API.

Air quality

US AQI — Moderate
54
PM2.5 (µg/m³)
5.8
PM10 (µg/m³)
8.3
Ozone (µg/m³)
69
NO₂ (µg/m³)
6.3

Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).

Industrial & pollution facilities

Natural hazard risk

Health (adults)

Walkability

Amenities nearby

Wildlife & biodiversity

Observations (last 5 yrs, 10 mi)
1,609,923
Distinct species (top 10)
10

Most-observed species

  • American Crow
    Corvus brachyrhynchos C.L.Brehm, 1822 · Aves
    44,688
  • House Finch
    Haemorhous mexicanus (P.L.Statius Müller, 1776) · Aves
    41,450
  • Anna's Hummingbird
    Calypte anna (R.Lesson, 1829) · Aves
    41,367
  • California Towhee
    Melozone crissalis (Vigors, 1839) · Aves
    35,309
  • Black Phoebe
    Sayornis nigricans (Swainson, 1827) · Aves
    33,694
  • California/Woodhouse's Scrub-Jay
    Aphelocoma californica (Vigors, 1839) · Aves
    29,405
  • Mallard
    Anas platyrhynchos Linnaeus, 1758 · Aves
    28,340
  • Chestnut-backed Chickadee
    Poecile rufescens (J.K.Townsend, 1837) · Aves
    27,321

Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).

Schools

Earthquake history

Quakes ≥ 2.5 (25 yrs, 62 mi)
1,545
Largest magnitude
6.02
Largest event
2014-08-24

Most recent

Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).

Photos

Sights & places nearby

Notable people from here

Cliff Burton
Cliff Burton
American bassist (1962–1986)
Dean Heller
Dean Heller
American politician
Garret Dillahunt
Garret Dillahunt
American actor
Christopher Titus
Christopher Titus
actor, writer, podcaster
Jason Castro
Jason Castro
American baseball catcher
David Bingham
David Bingham
American soccer player
Jack Del Rio
Jack Del Rio
American football player and coach (born 1963)
D
Dan Miller
American artist (born 1961)
Dina Eastwood
Dina Eastwood
American news anchor
A
Amy Caron
American skateboarder
A
Andrew Champion
American singer
B
Bill May
American soccer player
B
Brian Keyser
American baseball player
B
Brodie Brazil
television broadcaster
Casey Wellman
Casey Wellman
American ice hockey player
C
Craig Ferguson
Canadian ice hockey player

People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.

Nearby places in California

Browse all places in California →

Geography & sun

Avg solar (kWh/m²/day)
4.74
Annual solar (kWh/m²)
1,728

Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.

Nearby airports

Public attention

Wikipedia views (last 30 days)
3,230
Avg daily Wikipedia views
111
Attention level
Quiet

Pageview totals from the Wikimedia Pageviews API.

Books about Castro Valley

Castro Valley, California
Urban Land Institute · 1988
Rancho to Ranch Homes
Kelly, RIchard, Jr. · 2022
Sudoku Genius Mind Exercises Volume 1
Castro Valley State of Mind Collection · 2019
Legendary locals of Castro Valley, Hayward, and San Lorenzo, California
Doris Marciel · 2013
What I Saw In California
What I Saw In California
Edwin Bryant · 1848
Three years in California [1846-1849]
Three years in California [1846-1849]
Walter Colton · 1850
Castro Valley
Castro Valley
Lucille Lorge · 2005
Rancho of Don Guillermo
Rancho of Don Guillermo
John S. Sandoval · 1991

Search results from Open Library.

Recent natural events nearby

Wildfires, storms and other events from NASA EONET (last 12 months, within 250 mi).

Ground air-quality sensors

Recently spotted species

California Quail
California Quail
Callipepla californica
Seen 2026-09-25
European Mantis
European Mantis
Mantis religiosa
Seen 2026-09-25
Red-tailed Hawk
Red-tailed Hawk
Buteo jamaicensis
Seen 2026-09-25
Anise Swallowtail
Anise Swallowtail
Papilio zelicaon
Seen 2026-09-25
western sword fern
western sword fern
Polystichum munitum
Seen 2026-09-25
Pacific poison oak
Pacific poison oak
Toxicodendron diversilobum
Seen 2026-09-25

Research-grade observations from iNaturalist (within ~15 mi).

Nearest stream gauge

Events

Gallery

Sources

  • • Wikipedia
  • • US Census Bureau (ACS 5-year estimates)
  • • NOAA National Weather Service
  • • Wikidata
  • • Open-Meteo Air Quality (CAMS)
  • • USGS Earthquake Catalog (global feed)
  • • GBIF (Global Biodiversity Information Facility)
  • • iNaturalist
  • • Open-Meteo / sunrise-sunset.org
  • • Wikipedia Pageviews API
  • • Open Library
  • • NASA EONET