The shutdown of the federal government has sent as many as 770,000 employees home, delayed the paychecks of another 1.3 million "essential" workers, and shuttered various government functions.

That will put a crimp in the Washington D.C. area's economy — costing some $200 million per day. But it's not just D.C. As this map created by my colleagues shows, there are hundreds of thousands of federal workers spread out across the country.

The D.C. area, which includes parts of Virginia and Maryland, has some 446,000 employees who work for the federal government or the military. That's 14.3 percent of the region's 3.1 million workers — clearly the biggest proportion of any major metro area.

But, surprisingly, D.C. isn't even the city most dependent on its federal workforce. That honor belongs to Colorado Springs, home to two Air Force bases, the U.S. Air Force Academy, and a large Army installation. Here's a full list below:

1) Colorado Springs, 55,000 federal workers, or 18.8% of the workforce
2) Virginia Beach-N.C., 144,000 federal workers, 17.2%
3) Honolulu 86,000 workers, 17.2%
4) D.C. region, 446,000 workers, 14.3%
5) El Paso, 43,000 workers, 13.6%
6) Ogden-Clearfield, Utah, 24,000 workers, 11.5%
7) San Diego-Carlsbad-San Marcos, 151,000 workers, 10.9%
8) Augusta, Ga.-S.C., 20,000 workers, 9.1%
9) San Antonio, 72,000 workers, 7.8%
10) Charleston S.C., 24,000 workers, 7.6%

Not all these cities will be affected equally. Fewer than half of all federal workers will actually be furloughed, and all active-duty military and "essential" defense employees should get paid on time. But it's still a significant change. For instance, even though many of Colorado Springs' workers are military, at least 5,500 workers have already been sent home.

How big an impact will this have? In a research note Tuesday, J.P. Morgan analysts estimated that federal furloughs will reduce national income by a total of $1.3 billion per week. As a result, the shutdown could shave 0.12 percent off fourth quarter GDP growth for each week it goes on. That forecast doesn't account for any knock-on effects on the private sector or dent in economic confidence, which are harder to quantify.

All that lost income could be recouped if Congress later agrees to give those 770,000 furloughed federal workers back pay. But for now, that's very much uncertain. Republicans in Congress are split on whether to agree to retroactive pay to workers who get furloughed. (By contrast, the 1.3 million or so "essential workers" will eventually get paid regardless, though they may see their paychecks delayed.)