Housing data for Castle Hill, CA
Castle Hill, CA has an estimated 1,026 residents and 353 homes (US Census Bureau, 2020–2024 American Community Survey).
It is an unincorporated community in Contra Costa County.
8.8% of households rent.
Figures last updated on .
- Residents
- 1,026 (±355)
- Housing units
- 353 (±109)
- Households that rent
- 8.8%
- Residents since 2015–2019
- −28.1%
What stands out in Castle Hill
Working from home: 62.8% (±17.6 points) in Castle Hill, higher than in Contra Costa County (21.3%).
Households that rent: 8.8% (±11.1 points) in Castle Hill, lower than in Contra Costa County (32.0%).
Homes built before 1980: 83.5% (±29.6 points) in Castle Hill, higher than in Contra Costa County (53.1%).
Housing in Castle Hill at a glance
- Rent burden: 100.0% of renters pay 30% or more of income (Small sample: wide margin of error)
- Renters and owners: 8.8% of households rent (Small sample: wide margin of error)
- Income and affordability: $250,000 or more median household income
- Home values: $2,000,000 or more median home value
- Homeowner costs: $4,000 or more median monthly cost with a mortgage
- Property taxes: $10,000 or more median real estate taxes a year
- Types of homes: 0.0% of homes are in buildings of 5 or more units
- Bedrooms: 95.5% of homes have 3 or more bedrooms (Small sample: wide margin of error)
- Age of homes: 83.5% of homes were built before 1980
- Vacancy rate: 0.0% rental vacancy rate (Small sample: wide margin of error)
- Heating fuel: 82.2% heat with utility gas
- Commute and cars: 29.1 minutes average trip to work
- Growth: −28.1% residents since 2015–2019
- How long people stay: 7.9% moved in since 2020 (Small sample: wide margin of error)
- Crowding and facilities: 0.0% of homes have more than 1 person per room (Small sample: wide margin of error)
Castle Hill against Contra Costa County, its state and the nation
| Castle Hill | Contra Costa County | California | United States | |
|---|---|---|---|---|
| Residents | 1,026 (±355) | 1,165,012 (exact) | 39,287,377 (exact) | 334,922,499 |
| Housing units | 353 (±109) | 429,260 (±163) | 14,644,735 (±1,665) | 143,775,355 |
| Households that rent | 8.8% (±11.1 points) | 32.0% (±0.5 points) | 44.1% (±0.2 points) | 34.8% |
| Median gross rent | — | $2,375 (±$22) | $2,036 (±$5) | $1,413 |
| Median household income | $250,000 or more | $127,229 (±$1,713) | $99,122 (±$310) | $80,734 |
| Median home value | $2,000,000 or more | $866,800 (±$6,426) | $734,700 (±$1,307) | $332,700 |
| Median real estate taxes (a year) | $10,000 or more | $7,156 (±$82) | $5,124 (±$17) | $3,119 |
| Built before 1980 | 83.5% (±29.6 points) | 53.1% (±0.9 points) | 56.0% (±0.2 points) | 49.7% |
| Average commute | 29.1 minutes (±12.3) | 35.3 minutes (±0.4) | 28.7 minutes (±0.1) | 26.4 minutes |
| Households with broadband | 90.7% (±11.6 points) | 95.6% (±0.3 points) | 93.5% (±0.1 points) | 91.0% |
| Median age of residents | 43.9 years (±4.6) | 40.5 years (±0.1) | 37.9 years (±0.1) | 38.9 years |
Castle Hill covers 0.6 square miles of land, about 1,754 residents per square mile (Census Bureau Gazetteer).
How Castle Hill has changed since 2015–2019
| 2015–2019 | 2020–2024 | Amount of change | Verdict | |
|---|---|---|---|---|
| Residents | 1,426 (±361) | 1,026 (±355) | −28.1% | Not a measurable change |
| Housing units | 487 (±98) | 353 (±109) | −27.5% | Not a measurable change |
| Households that rent | 3.7% (±6.0 points) | 8.8% (±11.1 points) | +5.1 percentage points | Not a measurable change |
| Rental vacancy rate | 0.0% (±72.5 points) | 0.0% (±60.9 points) | 0.0 percentage points | Not a measurable change |
The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.
Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.
The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.
Crime reported to police in Contra Costa County
Castle Hill has no police department of its own in the FBI’s figures, so this is the figure for Contra Costa County as a whole.
In 2025, the police departments that report for Contra Costa County recorded 353 violent and 1,693 property crimes per 100,000 residents.
A county-wide figure describes the whole county, not this place; crime varies from one community to the next.
ZIP codes in Castle Hill
| ZIP code | Share of the ZIP’s land in this place | Residents | Median gross rent | Median home value | Median household income |
|---|---|---|---|---|---|
| 94595 | 10% | 16,988 | $2,557 | $860,600 | $100,552 |
A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.
Places near Castle Hill
| Place | Distance | Median gross rent | Median home value | Households that rent |
|---|---|---|---|---|
| Saranap | 1.3 mi | $2,540 | $1,453,300 | 34.6% |
| San Miguel (Contra Costa County) | 1.4 mi | $2,758 | $1,649,100 | 9.6% |
| Walnut Creek | 2.2 mi | $2,680 | $1,057,300 | 35.6% |
| Acalanes Ridge | 2.3 mi | $3,500 or more | $1,633,100 | 26.6% |
| Alamo | 2.8 mi | $3,500 or more | $2,000,000 or more | 8.2% |
| Lafayette | 3.5 mi | $2,892 | $2,000,000 or more | 22.9% |
| Contra Costa Centre | 3.5 mi | $2,713 | $733,300 | 84.6% |
| Moraga | 4.1 mi | $2,895 | $1,663,200 | 16.9% |
HUD Fair Market Rent for Castle Hill, fiscal year 2027
| Studio | 1 bedroom | 2 bedrooms | 3 bedrooms | 4 bedrooms |
|---|---|---|---|---|
| $2,088 | $2,290 | $2,805 | $3,592 | $4,250 |
HUD income limits for Castle Hill, fiscal year 2026
| Household size | Extremely low (30%) | Very low (50%) | Low (80%) |
|---|---|---|---|
| 1 person | $35,650 | $59,400 | $95,050 |
| 2 people | $40,750 | $67,900 | $108,600 |
| 3 people | $45,850 | $76,400 | $122,200 |
| 4 people | $50,900 | $84,850 | $135,750 |
| 5 people | $55,000 | $91,650 | $146,650 |
| 6 people | $59,050 | $98,450 | $157,500 |
| 7 people | $63,150 | $105,250 | $168,350 |
| 8 people | $67,200 | $112,050 | $179,200 |
These are the limits HUD sets for its housing programs in the Oakland-Fremont, CA HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $162,800.
A program can use its own limits; tax-credit and local programs often do.
Castle Hill is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.
Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.
Margins of error are at the 90% confidence level.
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Questions about Castle Hill
What is the median household income in Castle Hill?
The median household income in Castle Hill is $250,000 or more a year (2020–2024 American Community Survey).
What is the average home value in Castle Hill, CA?
The Census Bureau publishes the median: $2,000,000 or more for owner-occupied homes in Castle Hill (2020–2024 American Community Survey).
What is the average mortgage payment in Castle Hill?
The Census Bureau publishes total owner costs rather than the mortgage alone: the median for owners with a mortgage in Castle Hill, CA is $4,000 or more a month, including taxes, insurance and utilities.
How much are property taxes in Castle Hill?
The median real estate tax paid by homeowners in Castle Hill, CA is $10,000 or more a year (2020–2024 American Community Survey).
How many homes are in Castle Hill?
Castle Hill, CA has an estimated 353 (±109) housing units, occupied and vacant (2020–2024 American Community Survey).
How old are most homes in Castle Hill?
83.5% of homes in Castle Hill, CA were built before 1980 (2020–2024 American Community Survey).
Is Castle Hill growing?
In Castle Hill, the number of residents went from 1,426 in 2015–2019 to 1,026 in 2020–2024 (−28.1%), not a measurable change.
What ZIP codes are in Castle Hill?
The ZIP code that covers Castle Hill is 94595.
What is the median rent in ZIP code 94595?
The median gross rent in ZIP Code Tabulation Area 94595 is $2,557 (±$446) a month (2020–2024 American Community Survey).
Sources
- Demographic and Housing Estimates (DP05), 2020–2024 ACS 5-year estimates — Castle Hill CDP, California
- Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Castle Hill CDP, California
- Selected Economic Characteristics (DP03), 2020–2024 ACS 5-year estimates — Castle Hill CDP, California
- Median Real Estate Taxes Paid by Mortgage Status (B25103), 2020–2024 ACS 5-year estimates — Castle Hill CDP, California
- Selected Social Characteristics (DP02), 2020–2024 ACS 5-year estimates — Castle Hill CDP, California
- Total Population (B01003), 2015–2019 ACS 5-year estimates — Castle Hill CDP, California
- Median Gross Rent (B25064), 2015–2019 ACS 5-year estimates — Castle Hill CDP, California
- HUD Fair Market Rents, fiscal year 2027: Oakland-Fremont, CA HUD Metro FMR Area
- HUD Income Limits, fiscal year 2026: Oakland-Fremont, CA HUD Metro FMR Area
- US Census Bureau, American Community Survey 2020–2024 5-year estimates for ZIP Code Tabulation Areas
- Consumer Price Index for All Urban Consumers (CPI-U), US city average, all items, US Bureau of Labor Statistics: annual averages 2019 and 2024
- US Census Bureau, 2024 Gazetteer Files
To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Castle Hill CDP, California (place:11915, in state:06).
Each estimate (E or PE) has a margin of error beside it (M or PM).
The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.
The API needs a free key.
DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.
Figures last updated on .