The location field is intuitive and will bring up options when you begin typing. You can search by city and state. A full location (city and state) must be entered to activate the search radius drop down menu.
Please note that if a job has multiple locations throughout a given State or multiple locations throughout the US, you will sometimes be presented with job that don't look like what you searched for. To be certain, click on the job and under job information on the right hand side, you will see all locations that an employer is looking for candidates.
The search radius drop menu has multiple distances from the location of your choosing.
If you are using the location and the search radius but you are seeing jobs from other states that don't apply, there may not be a match to your specified area available. To be certain that there are no jobs per the location you have entered, in the left pane you will see this listed above the jobs:
This would be a great opportunity to set up a Job Alert search agent which can let you know when jobs matching your desired criteria are posted. You can find out more about that process in this article: