At current housing prices, DC's listing is FOS. I'd be surprised if you can buy a home in DC while making less than $100k. Doing so out in the DC 'burbs (stretching as far out as 25 miles) would be a challenge.
I *think* the ratio is still a suggested 2.5x your yearly income. My monthly mortgage, with insurance, taxes, etc, is about 25% of my net income monthly, which is why I'm staying put for the time being. I'm about 30 miles outside DC and if I had to buy my same house again in today's market, that payment would be roughly 50% of my net monthly income.
Chris