The battle against crime is the combined efforts of police and citizens.  Because police cannot be all places, all times, your Sheriff’s Department is dependent on citizen cooperation in the fight against crime.  Many crimes could be prevented if more citizens would be alert for suspicious activity and take appropriate measures to notify police.

When or why should I call?

If you observe suspicious activity, even though you may not be the only witness, take the initiative and call us.  Do not rely on someone else to act – this may never happen.  You could be the only caller, and police questioning the individuals seen lurking in or repeatedly traveling through areas often deters crimes. Many people fail to act because they are not sure if what they are observing is worth reporting or afraid of retaliation.  When in doubt, call the Police immediately.  Don’t lose precious time discussing the event with friends or neighbors first.

How Do I Report a Crime?

If you suspect that a crime is in progress, or is about to be committed, please dial 9-1-1. You need not give your name.  However, if you want a police officer to contact you, give your name, address, and telephone number and tell the Dispatcher that you would like to meet with an officer.

What is suspicious activity?

  • A stranger around your neighbor’s house or a strange vehicle parked near your neighbor’s home.
  • The sound of breaking glass.
  • Anyone peering into vehicles or removing tags, gasoline, or auto parts.
  • An improperly parked car, or a parked car with someone in it who seems out of place.
  • Someone carrying property such as TVs, stereos, or tools that can be used to break into homes.
  • Apparent business transactions conducted from a vehicle or street corner.
  • A constant flow of strangers to and from a particular house on a regular basis, especially during late evening hours.
  • Persons involved in a fight or an explosion or scream.
  • Door-to-door solicitations or any stranger knocking on doors(burglars sometimes knock at the door first to see if anyone is at home).
  • Recurring appearances of a strange vehicle in the neighborhood.
  • Persons standing around, possibly acting as lookouts. 

Burglar in your home?

 If you return home and believe that someone may have broken in while you were away:

  • Leave immediately! Do not enter your home!
  • Go to a neighbor’s house or some other location and dial the emergency number for the police, 9-1-1.
  • Wait for the police; do not return to your home until officers have checked it.

Call Prioritization

To ensure a rapid response when you need it, law enforcement agencies have a call priority system.  High priority calls consist of situations where lives may be endangered, in progress crimes, or those recently committed where there is a chance of apprehending a suspect.  As the call taker is asking questions, the information is being made available to the dispatchers for relay to the deputy sheriff on the street.  It is important to continue talking with the dispatcher, answering questions and providing additional information as accurately as possible.


When 9-1-1 is dialed and the calling party hangs up, an officer is sent to the address.  With the 9-1-1 system used in Los Angeles County, the address of the telephone from where the call is being made appears on the dispatcher’s computer terminal.  Please ensure that children do not play with your telephone.

Lower priority calls consist of reports of property crimes that occurred some time ago and suspects have left the scene.  These calls are dispatched based on available units and may take a little longer.

Reasons People Give for Not Reporting Suspected Criminal Activity:

Reason: It’s none of my business
Fact: You may be the next victim.

Reason: Someone else may be reporting it.
Consider: Maybe not.

Reason: The police are too busy.
Consider: Calls of in-progress crimes or suspicious activity are always important.

Reason: That noise may not be anything.
Consider: If so, why did it attract your attention?

Reason: That unknown person may be visiting the neighbors.
Consider: Maybe not. It’s best to be certain.

Reason: That strange car may just be lost.
Consider: There may be a crime about to occur.

Reason: The stranger at your door seems friendly, he or she was just lost.
Consider: This is how some burglars determine if anyone is home.

Reason: I could be wrong, and there is no crime occurring.
Consider: Maybe not. But then again, no harm is done by investigating it.

Reason: The criminals might retaliate if I report them.
Consider: Though this could occur, experience indicates this happens in extremely rare cases.

Reason: I do not care what happens off my property.
Consider: Apathy breeds crime. You could be next.

Reason: It is the Sheriff’s job, not mine.
Consider: The police depend on residents to be the “eyes and ears” on the street.

Reason: I am the victim and do not want to report it because it was just a minor theft.
Consider: It could be part of a developing pattern and the police need to know about it.

How to call the San Dimas Sheriff’s Station: 

  1. Dial 9-1-1 for emergencies, or (909) 450-2700 for non-emergencies or to ask questions.
  2. Quickly describe why you are calling. We will ask a lot of questions!
  3. Give your name, address, and phone number, if you so desire.
  4. Give detailed suspect or vehicle description and last known location or direction of travel.
  5. Stay calm. Remain on the phone to give any additional information.
  6. When in doubt, call 9-1-1.
  7. Call from a LANDLINE if possible – Cell phone calls are routed based on cell tower location. Calls near freeways go to CHP; calls near jurisdiction boundaries got to “logical” agency.
  8. If you call from a cell phone and get the wrong agency they can transfer quickly. In this jurisdiction, you may call us directly at (909)450-2700.
  9. It is not recommended to call fire stations directly. They might not be there!

Public Safety is everybody’s business!


San Dimas Sheriff’s Station is one of six stations within the East Patrol Division of the Los Angeles County Sheriff’s Department. The Station’s jurisdiction encompasses approximately 276 square miles. In addition to serving the City of San Dimas, the station serves unincorporated communities of Azusa, Covina, Glendora, La Verne, Claremont, Pomona, the Los Angeles County portion of Mt. Baldy, a large portion of the Angeles National Forest (State Route 39), and portions of Angeles Crest Highway (Highway 2). The population for these areas is approximately one hundred and five thousand (105,000), nearly sixty sixty-nine thousand (69,000) in the unincorporated areas and more than thirty-six thousand (36,000) in the City of San Dimas.

San Dimas Sheriff’s Station
Los Angeles County Sheriff’s Department
270 S. Walnut Avenue
San Dimas, CA 91773
(909) 450-2700


Instagram: LASD – San Dimas Station: @sdmlasd




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