Trulia's Mark Uh digs through today's high and rising rent rates by zeroing in at the submarket-level to find those spots where rents are becoming prohibitively costly--neighborhoods where $2,000 is the lowest rate for a one-bedroom.

In San Francisco and Manhattan--tied for the No. 1 rank--a one-bedroom rental costs at least $2,500, with a median price of $3,250. They were followed by three New York boroughs--Brooklyn, Queens and the Bronx--while Boston, Washington, D.C. and Los Angeles

The study includes a break-out by submarket: Fortunately for renters, not every neighborhood in a city is prohibitively expensive ... we’ve mapped out where most of the 1-bedroom rental are likely to be priced at more than $3,000 month or more than $2,000 a month. 

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