PUBLIC REGISTRY INFORMATION
25 registered sex offenders in Castro Valley, California
Explore registry information in Castro Valley and check nearby locations on the free map.
Registry snapshot
October 7, 2026- Registry records
- 25
- Registry source
- California Sex Offender Registry
Informational snapshot; verify current details with the official registry.
Registry context
Population & local comparison- Registry records per 10,000 residents
- 3.8
- Population estimate
- 65,001
- About 1 registry record per
- 2,600 residents
65% below Alameda County’s rate
U.S. Census Bureau, ACS 5-year estimate. Records relative to population, not the share of residents on a registry.
Explore near Castro Valley
Free public map · No account required
A 1-mile radius around the city map center. This is not the whole city count.
Open the interactive map →ZIP codes associated with Castro Valley
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| ZIP code 94546 | 22 | 44,855 | 4.9 |
| ZIP code 94552 | 3 | 14,506 | 2.1 |
Other cities associated with Alameda County
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| Oakland | 919 | 439,418 | 20.9 |
| Hayward | 264 | 158,801 | 16.6 |
| San Leandro | 155 | 87,826 | 17.6 |
| Fremont | 99 | 228,295 | 4.3 |
| Berkeley | 63 | 120,257 | 5.2 |
| Union City | 47 | 67,464 | 7.0 |
| Alameda | 42 | 77,238 | 5.4 |
| Livermore | 32 | 85,522 | 3.7 |
| Newark | 32 | 46,903 | 6.8 |
| Pleasanton | 26 | 76,960 | 3.4 |
| San Lorenzo | 25 | 29,171 | 8.6 |
| Dublin | 10 | 70,803 | 1.4 |
| Emeryville | 8 | 13,081 | 6.1 |
| Albany | 5 | 19,414 | 2.6 |
| Huntersville | 1 | — | — |
| Uc Berkeley | 1 | — | — |
Each linked area shows its own total. Geographic totals overlap and should not be added together; cities and ZIP codes can cross county boundaries. Population figures, where shown: U.S. Census Bureau, ACS 5-year estimate.
Frequently asked questions
How many registered sex offenders are listed in Castro Valley?
The October 7, 2026 snapshot lists 25 registered sex offenders in Castro Valley, California. Counts are informational and may differ from official registry totals.
How are the associated areas shown?
The linked areas share registry locations with Castro Valley. City, county and ZIP boundaries can differ, and their totals should not be added together.
Does the map preview show the whole city?
No. The preview shows public registry locations within 1 mile of the area’s map center. It covers a different area from the total above, and its live results may differ.
Check a specific address
Search the free map and verify any result with the official registry.
Search an address on the map →