网上能搜到当地区域的罪案情况，比如http://www.neighborhoodscout.com/ny/brooklyn/crime/
直接节选一些上面网站里的描述给你看（可以直接看最后两段）：

The crime rate in Brooklyn is considerably higher than the national average across all communities in America from the largest to the smallest, although at 20 crimes per one thousand residents, it is not among the communities with the very highest crime rate. The chance of becoming a victim of either violent or property crime in Brooklyn is 1 in 49. Based on FBI crime data, Brooklyn is not one of the safest communities in America. Relative to New York, Brooklyn has a crime rate that is higher than 82% of the state's cities and towns of all sizes.


However, compared to other communities of similar population size, Brooklyn has a crime rate that is noticeably lower than the average. This means that for comparably sized cities all across America, Brooklyn is actually safer than most according to NeighborhoodScout's exclusive analysis of FBI crime data.


For Brooklyn, we found that the violent crime rate is one of the highest in the nation, across communities of all sizes (both large and small). Violent offenses tracked included rape, murder and non-negligent manslaughter, armed robbery, and aggravated assault, including assault with a deadly weapon. According to NeighborhoodScout's analysis of FBI reported crime data, your chance of becoming a victim of one of these crimes in Brooklyn is one in 178.


Moreover, the rate of property crime in Brooklyn; burglary, larceny ($50 or more), grand theft auto, and arson; is 15 per 1,000 residents. This is about average for all cities and towns in America of all population sizes.


总体而言，晚上尽量打车回去（如果地铁站离得很近也行），不要闲逛。

安全这个问题是个概率事件。有人去过没有遇到问题，不等于这个区域就安全。


从概率上而言，在布鲁克林遇到安全问题的概率肯定高于曼哈顿中城或者韩国城那一带。


具体哪条街更安全这个问题意义不大，因为无论是你还是当地的“不安全因素”都是流动状态的


最终建议：还是换个区域吧，除非你是专门想多体验体验布鲁克林的本地文化

你上GOOGLE看街景,只要街上黑哥哥黑妹妹多.褲子吊在臀部下面, 街上房子被塗鴉厲害,這個區就不是好區.遠離為妙.
美國的好壞區很有意思,哪怕隔著一條街,情況都大不相同.隔著2條街,就是天堂和地獄之分了.

其实布鲁克林没有那么可怕 但是在美国 人生路不熟 还是小心为妙
天黑就尽量不要出门 或是可以用uber叫车 点到点

我在NYC住在曼哈顿的110+街，晚上黑兄弟确实多，都在路上闲晃；但走路和买吃的没人会理你。其实，不要有眼神接触，还是没问题的。

Grand Street较长，西部临伊斯特河会较安全，总体变数大。
不过女孩子多穿点，天黑后别乱跑，低调点 应该还好。

我在纽约的时候基本就是晚上7 8点就回酒店了，有时候是看着黑哥哥 人高马大挺吓人

我觉得没问题啊

看的担心