Castle HillCA
Some 1,026 people live in this town, in California.
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
For adults in Castle Hill, the share who smoke cigarettes is 6.8%. Of 32 CDC measures, Castle Hill beats the California average on 19 and trails it on 3.
| 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
Castle Hill has a very high natural-hazard risk, chiefly from inland flooding
The national flood insurance program has paid 53 claims in Castle Hill since 1982. Storm and flood damage is expected to run higher than in 99% of U.S. communities. Expected losses in Castle Hill break down as 69% from inland flooding and 30% from earthquakes.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Castle Hill stands out in California and nationally: the median household income there is higher
In Castle Hill, the typical journey to work is 29 minutes. Among 848 California towns, just one has a lower share of residents below the poverty line than Castle Hill. This California town had 112 jobs in 2023, up 62 from 2013. The median commute is under 19 miles.
| 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
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
The median home in Castle Hill sells for about $2.38M
91% of households own their home in Castle Hill.
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 a good place to live?
Some 1,026 people live in this town, in California.
Is Castle Hill, CA expensive?
Yes. The typical home is worth about $2,000,000, 163% above the California typical home. That is 14.7 years of the area's median household income ($136,027 across the San Francisco-Oakland-Fremont, CA metro area). Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C−.