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Alameda County, CA Public Conduct: Loitering Rules (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Curfew hours
10 p.m. to sunrise
Applies to
Persons under 18
Exception
With parent/guardian/adult
Hospital grounds
Separate infraction rule

Summary

Minors under 18 may not loiter in unincorporated Alameda County's public streets or places between 10 p.m. and sunrise without an adult.

City-specific rules exist: Livermore, Fremont, Berkeley, Hayward, and Oakland have their own loitering rules rules that differ from Alameda County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Every person under the age of eighteen (18) years who loiters in or about any public street or other public place or any place open to the public in the unincorporated territory of the county between the hour of ten p.m., and the time of sunrise of the following day when not accompanied by his parent, guardian or other adult person having legal care, custody or control of such person, or spouse of such person over twenty-one (21) years of age, is guilty of a misdemeanor.

Full Breakdown

Chapter 9.16 makes it a misdemeanor for anyone under 18 to loiter in or about any public street, public place, or place open to the public in unincorporated Alameda County between 10 p.m. and sunrise, unless accompanied by a parent, guardian, other adult with legal custody, or a spouse over 21. A parent or guardian who knowingly permits a minor to violate the curfew is separately guilty of a misdemeanor. A related section makes it an infraction to loiter on the grounds of Fairmont or Highland Hospital without lawful business after being told to leave by a sheriff's deputy or hospital agent. This applies to unincorporated territory only -- Castro Valley, San Lorenzo, Ashland and similar communities -- not inside Oakland, Berkeley, or the county's other incorporated cities, each of which sets its own curfew and loitering rules.

Violations & Fines

Misdemeanor for the minor and for a permitting parent/guardian under § 9.16.010-.020; hospital-grounds loitering is an infraction escalating from $50 to $500 or up to six months in jail for repeat offenses within a year.

Frequently Asked Questions

Does this curfew apply in Castro Valley?
Yes -- Castro Valley is unincorporated with no municipal government, so the county curfew in Chapter 9.16 applies directly there.
Is loitering by adults regulated the same way?
No. The general curfew in § 9.16.010 targets only persons under 18; adult loitering is addressed separately for county hospital grounds only.

Sources & Official References

Other rules in Alameda County

All Alameda County rules

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Loitering Rules in Cities Across Alameda County