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Contra Costa County, CA Public Conduct: Loitering Rules (2026)

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

Key Facts

Prohibited conduct
Loitering/standing/sitting that blocks a public way
Covers
Highways, alleys, sidewalks, crosswalks
Penalty
Misdemeanor under §51-4.404
Enforcing agency
Sheriff's Office
Applies to
Unincorporated Contra Costa County only
Related conduct
Also bars annoying/molesting passersby

Summary

No one may loiter, stand, or sit on a public street, alley, sidewalk or crosswalk in unincorporated Contra Costa County if doing so blocks the free passage of people or vehicles, or annoys or molests passersby. Section 54-8.002 is the county's general obstruction and loitering rule, prosecuted as a misdemeanor under Section 51-4.404.

City-specific rules exist: Brentwood, San Ramon, and Antioch have their own loitering rules rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

No person shall loiter, stand, or sit in or on any public highway, alley, sidewalk, or crosswalk so as to hinder or obstruct in any manner the free passage of persons or vehicles or to annoy or molest passing persons. ... Notwithstanding Section 14-8.002 of this code, violations of this Title 5 are misdemeanors, except violations of Chapter 54-10 (Rewards), Chapter 54-14 (Open Alcohol Containers), and Division 58 (CATV Systems), which are infractions.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Ordinance Code: Supplement 103).

Full Breakdown

' The rule traces to Ordinance No. 002 itself is written generally and is not limited to labor disputes; it reaches anyone who blocks a sidewalk, alley, or crosswalk or bothers people passing by. 404, which makes violations of Title 5 (General Welfare and Business Regulations) misdemeanors unless the specific chapter is listed as an exception; Chapter 54-8 is not on that exception list, so an obstruction citation is a misdemeanor, not an infraction. Deputies with the Contra Costa County Sheriff's Office, the primary enforcement agency for Division 54 public-order offenses, act on standing, sitting or loitering that physically blocks passage or crosses into annoying or molesting people on the street, distinguishing it from simply being present in a public place.

Violations & Fines

A violation of Section 54-8.002 is prosecuted as a misdemeanor under the Title 5 default penalty rule in Section 51-4.404, since Chapter 54-8 is not among the chapters (54-10, 54-14, Division 58) the code carves out as infractions. There is no separate civil fine schedule in the chapter itself; enforcement is criminal, through the sheriff's office.

Frequently Asked Questions

Is it illegal to loiter on a sidewalk in unincorporated Contra Costa County?
Yes, if it blocks the free passage of people or vehicles or annoys or molests passersby. Section 54-8.002 bans loitering, standing or sitting on any public highway, alley, sidewalk or crosswalk under those conditions; simply standing on a sidewalk without obstructing anyone is not covered.
What's the penalty for blocking a public sidewalk in the county?
It's a misdemeanor. Chapter 54-8 has no separate penalty clause, so Section 51-4.404's default rule applies: violations of Title 5 of the Ordinance Code are misdemeanors unless the chapter is specifically listed as an infraction, and Chapter 54-8 is not on that list.
Does this obstruction law only apply to labor picketing?
No. Section 54-8.002 is written in general terms covering anyone who loiters, stands or sits so as to block a public way, even though it sits in a chapter, 'Labor Disputes,' whose other sections separately regulate picketing and workplace intimidation.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

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