Like most issues, safety in the United States is difficult to define because the United States covers such a large territory. While the U.S. is generally a very safe place to live, it is still a good idea to educate yourself and take steps to reduce the potential for problems. By doing so, you will also feel more confident and comfortable.
Developing a sense of "street smarts" takes time, and comes through experience. You should familiarize yourself with well-lit paths and sidewalks on campus. The school's security office may offer an escort service, where designated people walk with you from one place to another on campus, particularly at night. Pay close attention to your surroundings. Trust your instincts. If a situation appears scary to you, try to avoid it.
At "home" (an apartment, private residence or dormitory room), keep your doors locked, and your large windows closed. Get to know your neighbors, so you can "watch out" for each other.
As always, you should use common sense when it comes to safety. For more information on safety issues while studying in the U.S., click here.