Its no secret, especially here in Portland... rent prices are sky rocketing across the country! However... after seeing what the average price for renting an apartment in the top 30 cities in the US, maybe a move sounds good to you. Portland definitely isn't the most expensive (we've got LA, NYC, San Francisco, Seattle, etc that are HELLA spendy)... but PDX definitely isn't the least expensive either.
Keep in mind this is the AVERAGE price of renting an apartment in these cities. Of course some will be cheaper and others more expensive.