To help you identify the hottest job markets heading into the new year, employment marketplace ZipRecruiter ranked the hottest metro areas:1. Fargo, ND-MNThe Fargo metro area lands the top spot due to its rapid job growth rate and high opportunity index (that is, a favorable ratio of job openings to candidates). Boston-Cambridge-Newton, MA-NHBoston is a top performer when it comes to the number of high-wage job opportunities available. Sioux Falls, SDLike Fargo, Sioux Falls rises up the rankings due to its rapid job growth rate and high opportunity index. Portland-South Portland, MEPortland, Maine, makes the rankings primarily because of its high opportunity index.