Castle HillCA
A town of 1,026.
Is Castle Hill a good place to live?
Castle Hill’s best subject grades are an A+ for incomes, health, and schools; its weakest is a D− for hazard risk. 80% of adults 25 and older hold a bachelor’s degree or more in Castle Hill, above both California’s towns (29%) and U.S. towns (29%). No town in California scores higher than Castle Hill on incomes. Only 31 of California’s 1,064 towns score lower on the outdoors. Castle Hill has fewer than 2,500 residents, so it gets subject grades but no overall grade.
What makes Castle Hill stand out
Where Castle Hill beats most towns, and one thing worth knowing.
1,026 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
How Castle Hill grades
Each subject compared with towns across the country (schools within California), ordered by how far Castle Hill is from typical.
How TownRatings grades towns →
Alcatraz Federal Penitentiary and 222 more within 40 miles
Museums, parks, gardens and other places to visit around Castle Hill. Close and well known come first.
Big draw20 mi MuseumAlcatraz Federal Penitentiary
Big draw15 mi MuseumUSS Hornet
Big draw19 mi Stadium & arenaChase Center
Big draw19 mi Stadium & arenaOracle Park
Big draw20 mi LandmarkLombard Street
Big draw33 mi Stadium & arenaLevi's StadiumPhoto credits
Alcatraz Federal Penitentiary: druchoy, CC BY-SA 2.0 · USS Hornet: kitmasterbloke, CC BY 2.0 · Chase Center: Gregory Varnum, CC BY-SA 4.0 · Oracle Park: User Coasttocoast on en.wikipedia, CC BY-SA 3.0 · Lombard Street: The original uploader was Y6y6y6 at English Wikipedia., Public domain · Levi's Stadium: Matthew Roth, CC BY-SA 2.0
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Moving to Castle Hill: who provides what
Castle Hill is unincorporated, so Contra Costa County and regional agencies provide most services.
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 Castle Hill.
On CDC estimates, Castle Hill is healthier than 96% of U.S. towns
Castle Hill beats the California average on 19 of 32 CDC measures and trails it on 3. 13% of adults report frequent mental distress in Castle Hill, below both the California town median (17%) and the median of U.S. towns (17%). 6.8% of adults smoke cigarettes in Castle Hill.
| Castle Hill | California towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 13% | 17% | 17% |
| Smoke cigarettes (CDC PLACES) | 6.8% | 11% | 14% |
| Feel lonely (CDC PLACES) | 30% | 36% | 33% |
| Frequent physical distress (CDC PLACES) | 11% | 14% | 14% |
| What stands out | Castle Hill | CA |
|---|---|---|
| Fewer uninsured adults | 3.4% | 10.6% |
| Fewer adults facing food insecurity | 5.8% | 17.9% |
| More adults who have had cancer | 11% | 6.4% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Very high risk in Castle Hill, with inland flooding at the top
Expected storm and flood damage is higher than in 99% of U.S. communities. Since 1982, 53 flood insurance claims have been paid out in Castle Hill.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Castle Hill stands out in California and nationally: the median household income there is higher
The median household income in Castle Hill is $250,000. Only 1 of the 848 California towns we compare have a lower share of residents below the poverty line than Castle Hill. Jobs based in Castle Hill grew to 112 in 2023, 62 more than in 2013.
| Castle Hill | California towns | U.S. towns | |
|---|---|---|---|
| Median household income | $250,000 | $95,000 | $80,000 |
| Below the poverty line | 0.2% | 10% | 9.6% |
| Average trip to work | 29 minutes | 28 minutes | 25 minutes |
Where working residents work
Census LEHD 2023 · ACS
Mild winters and pleasant summers in Castle Hill
Castle Hill has warm winters and warm summers. Castle Hill’s July high is 84°F.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
The median home in Castle Hill sells for about $1.85M
91% of Castle Hill households own their home.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Everything we know about Castle Hill
Colleges nearby
22 within 15 miles of the center of Castle Hill
About 7 of every 100 Castle Hill residents are enrolled in college, about the same as California.
100% of working residents leave Castle Hill for work
Where Castle Hill’s working residents go each day. Line width shows the share.
Census LEHD 2023
About Castle Hill
Census-designated place in California, United States
Castle Hill is a census-designated place in Contra Costa County, California, United States. Castle Hill sits at an elevation of 302 feet (92 m). The 2020 United States census reported Castle Hill's population was 1,271.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 0.7 sq mi
- Elevation
- 302 ft
- Area code
- 925
Questions about Castle Hill
Short answers, built from the data on this page.
Is Castle Hill, CA expensive?
Yes. The typical home is worth about $2,000,000, 163% above the California typical home. Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C−.