Safety · Foster
Foster, CA crime & safety
Foster's reported crime rate is well below California's. Most reported incidents are property crimes, mainly thefts. 23 violent crimes were reported in 2025.
Crime reported to police, trends and how Foster compares with the towns next door, from FBI data.
TownTapestry Safety GradeNew
B+
Foster’s Safety Grade: B+
Foster reports less crime per resident than 74% of the U.S. towns and cities we grade.
A-Violent crimeBProperty crime▼Improving since 2023
All U.S. towns we grade (6,620)Safer than 74%
More reported crimeLess reported crime
California towns we grade (420)Safer than 94%
Places of 25,000–100,000 people (1,259)Safer than 86%
Good confidence. Built on 851 incidents over 3 years. With counts this size, ordinary swings could put Foster anywhere from B+ to A-.
How the Safety Grade works
- One score, from FBI data. Property crimes + 4 × violent crimes reported to police, per resident, pooled over the FBI’s latest 3 years (2023–2025). Violent crime counts four times as much because it matters more to how safe a place feels. It’s the same score behind our Safest towns in CA ranking.
- Graded on a national curve. Every U.S. town and city with 1,000+ residents that reported all 3 years (6,620 places) is lined up by score: A+ top 5%A next 10%A- next 10%B B+ to B−, next 30%C C+ to C−, next 30%D D and D−, bottom 15%
- Violent and property sub-grades use the same curve on each rate alone.
- Trend compares 2025 with 2023 and only says “improving” or “rising” when the change is bigger than normal year-to-year swings.
- Not graded: towns under 1,000 people, and towns missing any of the 3 years.
- What it can’t see: unreported crime, traffic safety, or which part of town incidents happen in. Towns with a campus, highway or big shopping center count incidents involving visitors. It’s our own summary of public data, not an official rating.
Reported crime, 2025
Foster at a glance
Violent crime
0.7
per 1,000 residents · California 4.3
Property crime
7.6
per 1,000 residents · California 18.2
Incidents reported
268
23 violent · 245 property
Since 2022
▼ 38%
change in reported property crime
Violent crime per 1,000
Property crime per 1,000
Trend
Reported crime per 1,000 residents, 2022–2025
FosterCalifornia
Solid lines: property crime · dashed: violent crime.
Show as a table
| Year | Foster property | California property | Foster violent | California violent |
|---|---|---|---|---|
| 2022 | 12.3 | 23.9 | 1.3 | 5 |
| 2023 | 10.7 | 23.7 | 0.5 | 5.3 |
| 2024 | 6.7 | 19.9 | 0.7 | 4.8 |
| 2025 | 7.6 | 18.2 | 0.7 | 4.3 |
What gets reported
2025, by type
Larceny / theft
218
Burglary
13
Vehicle theft
14
Aggravated assault
16
Robbery
4
Rape
3
Homicide
0
Arson
2
Offenses reported to police, not convictions.
Who keeps Foster safe
Local public safety
👮 Foster Police DepartmentReports its crime counts to the FBI — the figures on this page.
🚨 EmergenciesCall 911. For non-emergency numbers, alerts and preparedness, see the town guide.
Nearby
Foster and its neighbors
Reported crime per 1,000 residents in each town's latest year. * = a count, for towns under 1,000 people. Grade: the Safety Grade; — = not graded.
| Town | Grade | Violent | Property | Year |
|---|---|---|---|---|
| Foster | B+ | 0.7 | 7.6 | 2025 |
| San Mateo | C | 1.7 | 14.9 | 2025 |
| Redwood City | C- | 3.6 | 14.5 | 2025 |
| Belmont | B- | 1.4 | 12.8 | 2025 |
| Hayward | D | 4.4 | 26.2 | 2025 |
How to read these numbers
What this data can and can't tell you
- It's reported crime. Only incidents reported to and recorded by police appear here. Many thefts and some assaults are never reported.
- Small numbers swing. In a town of about 32,400, a handful of incidents moves the rate noticeably from year to year. The trend matters more than any one year.
- Visitors count too. Towns with a campus, highway, beach or shopping center see incidents involving people who don't live there, which raises the per-resident rate.
- Gaps are real gaps. A missing year means the department didn't report a full year, not that nothing happened.
Source: FBI Uniform Crime Reporting Program, Crime Data Explorer: offenses known to law enforcement by city, 2025, and state and national rates. Counts are crimes reported to police, not convictions. This isn't an official statement of public safety — in an emergency, call 911.