Are ticks a problem in Castro Valley?

There have been 3 tick reports near Castro Valley, CA, with 0 bites and 3 sightings. The most common species reported is the Unidentified. Check the Tick Map for the latest 2026 tick activity.

What kind of ticks are in Castro Valley?

The most commonly reported tick species in Castro Valley include Unidentified. Each species carries different disease risks — see our species guide for identification help.

Tick Map

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Ticks in Castro Valley, CA

3 tick reports from the Castro Valley, CA area.

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Total Reports

Sightings

Bites

Species Found in Castro Valley

Unidentified3 (100%)

Tick Safety in Castro Valley

Ticks are active in Castro Valley, CA and surrounding areas. The most commonly reported species is the Unidentified, making up 100% of reports.

✓Wear light-colored clothing when walking in wooded areas or tall grass
✓Use EPA-registered tick repellent (DEET, picaridin, or IR3535)
✓Do a full-body tick check after being outdoors — especially behind ears, hairline, and waistband
✓Shower within 2 hours of coming inside
✓If bitten, remove the tick with fine-tipped tweezers and monitor for symptoms for 30 days