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Living in
Discovery Bay.
Discovery Bay is an unincorporated community in Contra Costa County, CA. It has no city government: the county runs it, and the Census counts it as its own place.
About
Life in Discovery Bay
This is a commuter's community built on a unique premise: waterfront living with private dock access to the Delta, about an hour from San Francisco. The original development was planned around man-made waterways and residential islands, giving the older sections a distinctive character that newer subdivisions spreading across former farmland to the north and west don't quite replicate. The cost of living is steep: median home values hover around $832,000 and median rent runs $3,029 monthly, which tracks with the median household income of $147,117.
Discovery Bay at a Glance
Population, income, housing and more
Median Age
45.6 yrs
Poverty Rate
7.4%
Foreign-Born
12.2%
Broadband Internet
98.1%
of households
Population Growth
-5.7%
recent change · Census Bureau
Median household income
Demographics12.2% foreign-born, most often from Mexico
Who lives in Discovery Bay: race and ethnicity, ages, households, languages and countries of origin
In Discovery Bay, the largest foreign-born group is from Mexico (23.2%), and 6.5% of residents speak Spanish at home.
Under 18
22.5%
of residents
65 and Older
19.1%
of residents
Households with Kids
33.0%
anyone under 18
Living Alone
19.3%
of households
Married Couples
60.7%
of households
Avg Household Size
2.74
people
Race & Ethnicity
Hispanic or Latino of any race; other groups are non-Hispanic
Top countries of origin (foreign-born)
Languages Spoken at Home
Cost of Livingrent 49% above CA average
Rent, home values, and income in Discovery Bay
In Discovery Bay, rent runs 49% above the CA average, and home values are 13% above the CA average.
Median rent (per month)
Median home value
Rent Burdened
71.8%
spending 30%+ of income on rent
Severely Rent Burdened
54.6%
spending 50%+
Cost of Living Index
115.6
metro area (BEA) · US avg = 100
Median Property Tax
$7,976
per year, owner-occupied homes
Homeowners
90.1%
of occupied homes are owned
Typical Home Built
1995
median year built
Vacant Homes
10.4%
of housing units
Home Value Trend
Latest: $775,031 (September 2026)
Jobs & Economyunemployment 0.7 pts below CA average
Unemployment in Discovery Bay
Unemployment in Contra Costa County, which includes Discovery Bay, is 0.7 percentage points lower than the CA average.
Unemployment rate
Discovery Bay: Contra Costa County rate (county-wide) · BLS annual average
Unemployment Rate — 10 Year Trend
Contra Costa County (county-wide) · Annual averages
Discovery Bay is about 1% of Contra Costa County’s population, so county-wide figures may differ from local conditions.
What Discovery Bay Residents Do for Work · share of employed residents by industry
City residents, wherever they work
Commute44.1 min avg
How Discovery Bay residents get to work, and the nearest airports
In Discovery Bay, most residents drive alone to work (66%), and 35% get there in under 30 minutes.
How People Get to Work
Commute Time Distribution
Nearest airports · with airline service
- 20 mi
Stockton Metropolitan Airport (SCK)
Regional airport · few flights66k passengers boarded in 2025
- 36 mi
Oakland San Francisco Bay Airport (OAK)
Medium hub4.5M passengers boarded in 2025
- 46 mi
San Francisco International Airport (SFO)
Major hub26.3M passengers boarded in 2025
Straight-line distance. Size is the FAA’s hub category, based on passenger traffic: regional airports may have only a few flights a day.
Safetyviolent crime 24% below national average
Crime rates for 2025
Violent crime in the area policed by the Contra Costa County Sheriff's Office, which covers Discovery Bay, runs 24% below the national average.
Violent Crime Rate
251.8
per 100,000 residents
Below average (329 national, 2025)
Property Crime Rate
928.9
per 100,000 residents
Below average (1,552 national, 2025)
Policed by Contra Costa County Sheriff's Office (county-wide rate)
Natural DisastersStrong Wind most common — 10 events in 2025
Natural hazard risk, storms and earthquakes
FEMA National Risk Index
Very High
99.5 / 100
Compares expected losses from natural hazards, social vulnerability and community resilience against every US county (higher = more risk).
Contra Costa County, county-wide · FEMA NRI December 2025
In Contra Costa County, which includes Discovery Bay, the most common type is strong wind, with 10 recorded events in 2025.
Most common events:
Storm events by year
| Year | Events | Top Type | Property Damage |
|---|---|---|---|
| 2025 | 10 | Flood | None reported |
| 2024 | 11 | Flood | $70 |
| 2023 | 9 | High Wind | Not estimated |
| 2022 | 12 | Strong Wind | $10 |
| 2021 | 12 | Strong Wind | Not estimated |
| 2020 | 18 | Strong Wind | None reported |
| 2019 | 32 | Strong Wind | None reported |
| 2018 | 16 | Flood | None reported |
Property damage is the National Weather Service's estimate filed with each event. “None reported” means the events were logged with $0 damage; “Not estimated” means no estimate was filed. Storms covering several counties aren't counted here, since NOAA doesn't split their damage by county.
290 earthquakes of magnitude 2.5+ within 100 miles in the past year
Contra Costa County, county-wide
Discovery Bay is about 1% of Contra Costa County’s population, so county-wide figures may differ from local conditions.
Air Quality48 median AQI — Good
Days by air quality category (2024)
Air quality in Contra Costa County, which includes Discovery Bay, is typically good — 195 good-air days per year.
Median AQI
48
Good Days
195
per year
Moderate Days
168
per year
Unhealthy Days
0
per year
Contra Costa County, county-wide
Discovery Bay is about 1% of Contra Costa County’s population, so county-wide figures may differ from local conditions.
Climate91°F summers, 42°F winters
30-year climate averages (1991–2020) — monthly temperatures and precipitation
Discovery Bay has hot summers (avg high 91°F) and mild winters (avg low 42°F).
Spring (Mar–May)
74°/51°F
avg high / low
Summer (Jun–Aug)
91°/61°F
avg high / low
Fall (Sep–Nov)
78°/54°F
avg high / low
Winter (Dec–Feb)
58°/42°F
avg high / low
Annual Precipitation
12.4"
Annual Snowfall
0.0"
Hot Days/Year
82
days above 90°F
Freeze Days/Year
10
days below 32°F
Rainy Days/Year
61
Average month
Show month-by-month table ↓Hide table ↑
| Month | High | Low | Precip |
|---|---|---|---|
| Jan | 56°F | 41°F | 2.51" |
| Feb | 62°F | 44°F | 2.32" |
| Mar | 67°F | 47°F | 1.60" |
| Apr | 73°F | 50°F | 0.84" |
| May | 80°F | 55°F | 0.52" |
| Jun | 88°F | 59°F | 0.13" |
| Jul | 93°F | 62°F | 0.00" |
| Aug | 93°F | 62°F | 0.01" |
| Sep | 89°F | 60°F | 0.08" |
| Oct | 79°F | 55°F | 0.67" |
| Nov | 66°F | 46°F | 1.32" |
| Dec | 57°F | 40°F | 2.37" |
Healthcare
Hospitals, ratings, and health insurance in Discovery Bay
Uninsured
5.8%
of residents
No hospitals inside Discovery Bay's limits — nearest hospitals · within 15 miles
Kaiser Foundation Hospital - Antioch
Acute Care Hospitals · ER available · 9.9 mi away · Antioch
Sutter Delta Medical Center
Acute Care Hospitals · ER available · 12.2 mi away · Antioch
Sutter Tracy Community Hospital
Acute Care Hospitals · ER available · 14.4 mi away · Tracy
Adult Health · vs. the typical US place
Share of adults. Modeled estimates, not counted cases. “US” = the typical US place.
Medicare-certified hospitals only. Doesn’t include clinics, urgent care, or freestanding ERs.
Education22.6:1 student/teacher ratio
Schools and degree attainment in Discovery Bay
Discovery Bay's student/teacher ratio is 22.6:1 (higher than the national average of 16:1), and 32.7% of adults 25+ hold a bachelor's degree or higher.
Public Schools
3
within city limits
Private Schools
1
within city limits
College Degree Rate
32.7%
adults 25+ with bachelor's or higher
Student/Teacher Ratio
22.6:1
National avg 16:1
Schools located within city limits (2023) — school-level metrics change slowly year to year
Parks & Recreationclosest: Eugene O'Neill National Historic Site, 24 mi
Nearby national parks, recreation areas and public libraries for Discovery Bay
Discovery Bay has 8 nearby national parks or recreation areas, closest being Eugene O'Neill National Historic Site (24 mi away).
Nearby National Parks & Recreation Areas
Eugene O'Neill National Historic Site
National Historic Site
24 mi awayPort Chicago Naval Magazine National Memorial
National Memorial
26 mi awayJohn Muir National Historic Site
National Historic Site
29 mi awayRosie the Riveter WWII Home Front National Historical Park
National Historical Park
41 mi awayAlcatraz Island
National Park Site
45 mi awaySan Francisco Maritime National Historical Park
National Historical Park
45 mi awayFort Point National Historic Site
National Historic Site
48 mi awayPresidio of San Francisco
National Park Site
48 mi awayCities Near Discovery Bay
The closest cities within 60 miles
Planning a move to Discovery Bay?
Read our full moving guide — what it's really like to live here.
Discovery Bay FAQ
Is Discovery Bay, California affordable?⌄
Discovery Bay's median rent is $3,029/month, which is significantly above the national average. The median household income is $147,117/year. Median home value is $832,000.
Is Discovery Bay, California safe?⌄
Discovery Bay is policed by the Contra Costa County Sheriff's Office, whose violent crime rate across its service area was 252 per 100,000 residents in 2025, which is below the national average of 329/100k that year. Property crime rate is 929 per 100,000. As with any city, crime rates vary by neighborhood.
What is the job market like in Discovery Bay, California?⌄
Contra Costa County, which includes Discovery Bay, has an unemployment rate of 4.8%, which is slightly above the national average of 4.3%.
What is the cost of living in Discovery Bay, California?⌄
The cost of living in Discovery Bay is primarily driven by housing. Median rent is $3,029/month and median household income is $147,117/year. The median home value is $832,000. About 72% of renters spend more than 30% of their income on housing.
How is the commute in Discovery Bay, California?⌄
The average commute in Discovery Bay is 44 minutes, which is significantly longer than average compared to the national average of 26 minutes.
Data from the US Census Bureau, BLS, FBI, NOAA, EPA, Zillow Research and other public sources. Where our data comes from