Moving to portland and need cheap apt.?

hello . i am moving to portland in june, .. I cannot afford an apartment over $600 max since i have no job yet and am just going there with savings. my question is - how seedy are the neighborhoods? i just moved from baltimore which is pretty scary and i know portland will be much safer. but given my price range, how dangerous are the neighborhoods and are there any areas i should be weary of? i am not opposed to living outside of the city if it's linked by pub. transportation.