Public Conduct in Alameda County, CA (2026)

5 county-level rules, plus city-specific rules for 6 cities in Alameda County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Alameda County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Skateboarding Rules

Unincorporated Alameda County bans skateboarding on roadways at unsafe speeds, on divided highways, near intersections, after dark, and anywhere in a business district's streets, sidewalks, or parking areas, plus on specifically posted county property.

Skateboarding Rules in Alameda County

Significant Restrictions

Alameda County Code § 10.04.150

A.Prudent Operation. No person shall ride or propel a skateboard upon a roadway at a speed greater than is, or in a manner other than is, reasonable or prudent having due regard for weather, visibility, the traffic on, and the grade, surface and width of, the roadway, and in no event at a speed or in a manner which endangers his safety or the safety of other persons or property.B.Heavily Travel...

Full ordinance details →Official source ↗

Loud Party Ordinance

Alameda County's Social Host Ordinance fines anyone who knowingly hosts a loud or unruly gathering on unincorporated-area property where alcohol reaches a person under 21, $750 for a first offense, rising to $2,500, plus liability for police response costs.

Social Host Loud Party Rules in Alameda County

Significant Restrictions

Alameda County Code § 9.42.050

no person shall knowingly suffer, permit or host a gathering at his or her place of residence or other private property, place or premises or host a gathering at a public place under his or her control where two or more persons under the age of twenty-one (21) are present, where the gathering is loud or unruly and alcoholic beverages are in the possession of, being consumed by, or served to any...

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Loitering Rules

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

Loitering Curfew in Alameda County

Some Restrictions

Alameda County Code § 9.16.010

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...

Full ordinance details →Official source ↗

Outdoor Smoking Restrictions

Unincorporated Alameda County bans smoking within 20 feet of building entrances, exits, and outdoor dining areas, extending its enclosed-space smoking ban into nearby outdoor space.

Outdoor Smoking Rules in Alameda County

Significant Restrictions

Alameda County Code § 6.72.050(A)(4), (A)(6)

A. Smoking shall be prohibited in all enclosed public places within the unincorporated areas of Alameda County, including, but not limited to, the following places: ... 4. Outdoor areas near any entrance or exit to any facility in which smoking is prohibited. Smokers must maintain a "reasonable distance" of at least twenty (20) feet from all such entrances, exits, windows, ventilation systems o...

Full ordinance details →Official source ↗

Public Alcohol Use

Unincorporated Alameda County bans drinking alcohol on any public street, sidewalk or alley, and on business parking lots within 500 feet of a public way without the owner's permission: both are infractions.