It is difficult to participate in a conversation pertaining to El Salvador without someone in the mix eventually bringing up the subject of crime -- and for good reason.
Most news about El Salvador that expatriates receive leave the impression that the country is fraught with indiscriminate and violent crime. Add to this a recently released report putting El Salvador at the top of the most violent nations on Earth. I am not going to get into debating the merits or flaws of the report, but the reality of the situation in the country is not as dire as what many outside the country might think.
Danger definitely exists, as it does in Los Angeles, my adopted home. Prudent behavior goes a long way both in San Salvador and Los Angeles. Much like I wouldn't walk around a tough neighborhood in Los Angeles wearing a thick gold chain around my neck, I don't do the same in San Salvador -- unless I wanted undesired attention.
While my example is a bit of a hyperbole, it serves to illustrate where many people go wrong.
The behavior that keeps you safe wherever it is you call home as an expatriate will also help keep you safe in San Salvador and other places in El Salvador. Unfortunately, some people tend to forget this point when they jump on the plane taking them to El Salvador (or any other place for that matter).
Much like in major cities within the United States, violent crimes are often associated with specific areas of San Salvador or other destinations in El Salvador. And much like in Los Angeles, this fact doesn't mean the possibility of something occurring outside those areas is eliminated, it merely means the chances are reduced. To give you an example, there are many small towns in El Salvador where violent crime is completely unheard of.
Petty theft or vandalism is a different story, which brings me to another important point. Violent crime may be concentrated in specific neighborhoods, but petty crimes aren't, and this is something that is quite a bit different than what you may be accustomed to in your current place of residence.