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California›Contra Costa County

Shell RidgeCA

It is a town of 746 residents in California.

Is Shell Ridge a good place to live?

83% of adults 25 and older hold a bachelor’s degree or more in Shell Ridge, against 29% in California’s towns and 29% across U.S. towns. No town among the 848 in California we compare has a higher owner-occupancy rate than Shell Ridge. Shell Ridge has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

746 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Nearby attractions

Alcatraz Federal Penitentiary and 208 more within 40 miles

Museums, parks, gardens and other places to visit around Shell Ridge. Close and well known come first.

All 277 attractions →
Sources: National Park Service · ski areas © OpenSkiMap / OpenStreetMap contributors · Wikidata · Wikipedia readership · photos via Wikimedia Commons
Photo credits

Alcatraz Federal Penitentiary: druchoy, CC BY-SA 2.0 · Chase Center: Gregory Varnum, CC BY-SA 4.0 · USS Hornet: kitmasterbloke, CC BY 2.0 · Levi's Stadium: Matthew Roth, CC BY-SA 2.0 · Oracle Park: User Coasttocoast on en.wikipedia, CC BY-SA 3.0 · Lombard Street: The original uploader was Y6y6y6 at English Wikipedia., Public domain

Getting set up

Moving to Shell Ridge: who provides what

Shell Ridge is unincorporated, so Contra Costa County and regional agencies provide most services.

PowerPG&E37.5¢/kWh · EIA 2025HIFLD · EIA
WaterEBMUDNo health-based violations in 5 years · EPAEPA
Internet8 providers100% of addresses get 100/20 MbpsFCC
Trash & county servicesContra Costa CountyContra Costa County provides services here
SchoolsAcalanes Union High School DistrictMount Diablo Unified School DistrictWalnut Creek Elementary School District3 districts serve Shell Ridge; which school depends on your address and gradeNCES
Register to voteOnlineIn California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before).vote.gov
Who runs elections hereContra Costa County Elections DivisionContra Costa County; contacts on the Handbook page.FVAP, Aug 2025
ZIP code9459894598 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

The data

Ordered by what stands out in Shell Ridge.

Natural hazards

Very high risk in Shell Ridge, with earthquakes at the top

The FEMA hazard score here in Shell Ridge is 91 of 100. Of the losses FEMA expects here, 55% come from earthquakes and 43% from inland flooding.

91risk score of 100
FEMA risk score
91Very high riskLowerHigher
EarthquakesInland flooding

FEMA National Risk Index · OpenFEMA

Work & commute

Shell Ridge stands out in California and nationally, with the median household income higher than most

Half the trips to work are shorter than 16 miles. Shell Ridge: 1.9% of residents live below the poverty line. Since 2014, Shell Ridge has lost 55 jobs, to 52 in 2024. In Shell Ridge, the typical journey to work is 35 minutes.

1%work in town
Shell RidgeTypical California townTypical U.S. town
Median household income$250,000$95,000$80,000
Average trip to work35 minutes28 minutes25 minutes
Below the poverty line1.9%10%9.6%
Working residents who work in town1.1%6.6%7.9%

Where working residents work

In Shell Ridge1%
San Francisco18%
Walnut Creek16%
Oakland7%
Concord5%
16 mi
median commute distance
52
jobs based in Shell Ridge
A commuter town
jobs vs. working residents

Census LEHD 2024 · ACS

Climate

In Shell Ridge, expect mild winters and pleasant summers

July afternoons reach 87°, January nights drop to 39° and snow is almost unheard of.

87°summer high

Typical low → high °F

Winter40–58°
Spring46–70°
Summer56–85°
Fall49–75°
+1.6°
vs. the 20th-century average
87°
typical summer high

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Shell Ridge is

The town does better than the California average on 19 of 32 CDC measures and worse on 4. 26% of adults have obesity in Shell Ridge. In Shell Ridge, 30% of adults feel lonely, and 7.5% smoke cigarettes.

Shell RidgeTypical California townTypical U.S. town
Frequent mental distress (CDC PLACES)13%17%17%
Feel lonely (CDC PLACES)30%36%33%
Smoke cigarettes (CDC PLACES)7.5%11%14%
Sleep under 7 hours (CDC PLACES)30%35%36%
32 measures vs. California
19 better9 too close to call4 worse
What stands outShell RidgeCA
Fewer uninsured adults3.5%10.6%
Fewer older adults who have lost all their teeth3.9%10.6%
More adults who have had cancer11%6.4%
John Muir Medical Center - Walnut Creek Campus
0.7 mi away · emergency room
None
primary care, dental or mental-health shortage

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

0
homes sold in September

Zillow Home Value Index · Redfin Data Center

Keep exploring

Everything we know about Shell Ridge

14pages on Shell Ridge
After high school

Colleges nearby

20 within 15 miles of the center of Shell Ridge

A commuter town

99% of working residents leave Shell Ridge for work

Where Shell Ridge’s working residents go each day. Line width shows the share.

18% → San Francisco San Francisco 18% 16% → Walnut Creek Walnut Creek 16% 7% → Oakland Oakland 7% 5% → Concord Concord 5% 4% → Pleasanton Pleasanton 4% 4% → Berkeley Berkeley 4% Shell Ridge · 1% stay
52jobs based in Shell Ridge
1%of working residents work in town
16 mimedian commute distance

Census LEHD 2024

About Shell Ridge

Census-designated place in California, United States

Shell Ridge is a census-designated place in Contra Costa County, California, United States. Shell Ridge sits at an elevation of 295 feet (90 m). The 2020 United States census reported Shell Ridge's population was 1,014.

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

Area
0.4 sq mi
Elevation
295 ft
Area code
925

Questions about Shell Ridge

Short answers, built from the data on this page.

Is Shell Ridge, CA a good place to live?

Shell Ridge has fewer than 1,000 residents, too few for fair grades; the figures below are still real.