Household broadband adoption
Castro Valley CDP
How many households in Castro Valley CDP, California report an internet subscription. These are survey estimates of what households subscribe to, not a record of which providers offer service at a given address.
Households
22,021
± 735
With a broadband subscription
96.7%
21,285 households ± 747
With no internet access
2.5%
556 households ± 177
How this compares
| Castro Valley CDP | 96.7% | |
|---|---|---|
| California | 93.5% ± 0.1 points | 3.2 points above |
| United States | 91.0% ± 0.1 points | 5.7 points above |
Ranks 186 of 973 places in this state with estimates solid enough to compare.
How to read these numbers
- Every figure is a survey estimate with a margin of error at the 90% confidence level. A difference smaller than the margin is not a real difference.
- “Broadband of any type” counts cable, fibre, DSL, satellite and cellular data plans together. It does not distinguish speed or technology.
- Households reporting no internet access may still have service available to them. Adoption and availability are different measurements.
- These estimates describe households, not people, and not individual addresses.
Source
U.S. Census Bureau, American Community Survey 2024 5-year estimates, table B28002, presence and types of internet subscriptions in household.
Census place 0611964 · retrieved 2026-10-07T01:45:29Z
Change since 2018
2018 estimate
89.5%
± 1.3 points
2024 estimate
96.7%
± 1.0 points
Difference
+7.1 points
Statistically significant: higher than in 2018
The two releases cover 2014–2018 and 2020–2024. They share no years, which is what makes them comparable at all. The margin on each rate is derived from the margins of both counts it came from, and the difference is tested at the same 90% confidence level the Census Bureau publishes those margins at.
Places of a similar size in California
Each of these publishes an estimate solid enough to set beside this one. Margins of error overlap, so a small difference between two places is not a difference.
| Place | Households | With a subscription |
|---|---|---|
| West Hollywood city | 22,920 | 93.0% |
| Yorba Linda city | 22,916 | 95.6% |
| San Rafael city | 22,910 | 94.6% |
| South San Francisco city | 21,838 | 95.6% |
| Santa Cruz city | 21,713 | 95.5% |
| Brentwood city | 21,295 | 96.6% |