Zane Grey Estate · Photo: Nathan Simmons · CC BY-SA 3.0Who polices Altadena, and what they report
Altadena has no police department of its own: it’s an unincorporated community (a census-designated place) in Los Angeles County. The Los Angeles County Sheriff’s Office reports to the FBI for the parts of the county without police of their own, so there are no figures for Altadena alone, and no Safety Grade.
What stands out about safety in Altadena
Policed by the county
Altadena is a census-designated place, with no town government. Crimes there are reported to the FBI inside the Los Angeles County Sheriff’s Office’s totals for the county. County police ↓
Counts, not rates
The FBI doesn’t publish how many people the Los Angeles County Sheriff’s Office covers, so its totals can’t be turned into a per-resident rate or a grade for Altadena. County police ↓
The nearest graded towns
The closest California towns with their own police figures are Pasadena (D, 2 mi), La Cañada Flintridge (B−, 4 mi), San Marino (B, 5 mi). Nearby towns can differ a lot from Altadena. Nearest ↓
Written from the FBI data on this page. Figures are crimes reported to police, not convictions.
What the Los Angeles County Sheriff’s Office reports
Crimes reported to the FBI for the whole area the department covers, by year.
Reports to the FBI for the parts of Los Angeles County without police of their own, which include Altadena.
Property crimes
Violent crimes
2025 offenses reported by the Los Angeles County Sheriff’s Office
Counts, not rates: the FBI doesn’t publish how many people each agency covers. FBI Uniform Crime Reporting, Tables 10–11.
The nearest California towns with a Safety Grade
Each town’s own police figures, per 1,000 residents a year, 2023–2025.
| Town | Grade | Distance | Violent | Property |
|---|---|---|---|---|
| Pasadena | D | 2 mi | 4.8 | 25.3 |
| La Cañada Flintridge | B− | 4 mi | 1.1 | 16.1 |
| San Marino | B | 5 mi | 0.5 | 14.7 |
| Sierra Madre | B | 5 mi | 2.2 | 6.8 |
| South Pasadena | C− | 6 mi | 2.2 | 24.1 |
| Glendale | C | 6 mi | 2.5 | 20.4 |
Straight-line distance from the center of Altadena. Nearby towns can differ a lot from Altadena.
Three people died in crashes on Altadena’s roads in 2019–2023
Altadena had 3 fatal crashes in five years, in which three people died; 2 were pedestrians.
That is fewer than is typical for California towns of 25,000–100,000 people: at their median rate (5.6 deaths per 100,000 residents a year), a town of Altadena’s size would see about 12 in five years. With numbers this small, a death or two either way changes the picture, so Altadena’s own rate (1.4) is context, not a ranking.
Deaths are counted where the crash happened, not where the people lived: a highway through town adds through-traffic deaths, and residents’ own risk on roads elsewhere isn’t here. Town rates sit below state and U.S. rates because a third of fatal crashes happen outside any town. Road safety is described here and is not part of the Safety Grade. Source: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023.
Altadena and its neighbors
How reported crime compares across the town line. Tap a town to see its safety page.
| Town | Grade | Violent | Property |
|---|---|---|---|
| Pasadena | D | 4.8 | 25.3 |
Crimes reported to the FBI per 1,000 residents a year, 2023–2025.
What this data can and can’t tell you
- It’s reported crime. Only incidents reported to and recorded by police appear here. Many crimes are never reported to police.
- A county agency covers a wide area. Its totals mix many communities, so they say little about any one of them.
- Gaps are real gaps. A missing year means the department didn’t report a full year, not that nothing happened.
How the grade is calculated, for every town: How TownRatings grades safety →
Questions about safety in Altadena
Is Altadena, CA safe?
There is no Safety Grade for Altadena. Altadena has no police department of its own: it’s an unincorporated community (a census-designated place) in Los Angeles County. The Los Angeles County Sheriff’s Office reports to the FBI for the parts of the county without police of their own, so there are no figures for Altadena alone, and no Safety Grade. The nearest California towns with a grade are Pasadena (D, 2 mi), La Cañada Flintridge (B−, 4 mi), San Marino (B, 5 mi).
Who polices Altadena?
The Los Angeles County Sheriff’s Office. Altadena is an unincorporated community, and the department reports to the FBI for the parts of Los Angeles County without police of their own.
Heads-up board
Neighbors looking out for each other in Altadena.
Your answer becomes a post in Town Square.
Please don’t name or describe individuals. In an emergency, call 911.
Crime: FBI Uniform Crime Reporting Program, Crime Data Explorer: offenses known to law enforcement by city, and state and national rates. Counts are crimes reported to police, not convictions. The Safety Grade is our own summary of that data, not an official rating. Road deaths: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023. This isn’t an official statement of public safety. In an emergency, call 911.