Brooklyn is the most populous and one of the largest boroughs in New York City, making it impossible to define 'Brooklyn safety' as a single entity.

Park Slope and Brooklyn Heights are among the safest residential areas in New York, while some neighborhoods still have high crime rates and require caution. The New York City Police Department (NYPD) publishes crime statistics through its CompStat system, allowing residents to check the crime status in specific areas directly.

The NYPD manages Brooklyn by dividing it into several precincts. The 76th Precinct (Park Slope, Gowanus) and the 78th Precinct (Brooklyn Heights, parts of Park Slope) are known for their relatively low crime rates and safety. In contrast, the 73rd Precinct (Brownsville) and the 75th Precinct (East New York) have higher rates of gun-related incidents and violent crimes. East New York has historically been considered a vulnerable area in Brooklyn, but gradual changes have been observed in recent years due to gentrification. Bushwick has also become much safer compared to the past, but caution is still advised when going out at night.

The neighborhoods of Flatbush, Sunset Park, and Bay Ridge, which have a significant Korean population, can be seen as having moderate safety levels. Sunset Park has a mix of Chinese and Latinx communities, and while it is lively and relatively safe during the day, it is advisable to avoid deserted alleys at night. Bay Ridge has a strong Italian and Arab community, maintaining a stable residential atmosphere.

When using public transportation like subways and buses, there can be concerns about safety. Subway crime in New York increased for a period after COVID-19 but has shown a decreasing trend since then; however, it is necessary to remain vigilant in less crowded stations or trains late at night. It is advisable to avoid carelessly taking out smartphones in public and to refrain from blocking out surrounding sounds with headphones while walking. The NYPD has increased police presence at major subway stations, and crime reports can be made through 911 or 311.

Overall, local residents commonly agree that safety in Brooklyn has significantly improved compared to 10 to 20 years ago. Areas like Park Slope, Williamsburg, and Downtown Brooklyn, where gentrification has rapidly progressed, have become much safer than in the past. When choosing a place to live, checking the NYPD CompStat statistics for the neighborhood you wish to reside in and visiting during both day and night is the most accurate basis for judgment.