There are many journals that focus specifically on publishing undergraduate research. The Council on Undergraduate Research (CUR) keeps an ever growing list of journals that feature undergraduate work. However, many of those listed by CUR are hosted by a specific institution and might only publish the work of their own students, and others might not be peer-reviewed or have publishing fees, so read the descriptions carefully. And, as always, carefully review each journal's website, published articles, and the author submission guidelines before submitting your work. Additionally, talking to your faculty members and peers about journals they submit their research to may help guide your decision. Some questions you might also want to ask yourself include:
Is this the right place for my work?
Is this a trusted journal?