(Courtesy of Mark Evans)

D.C.’s official population is 672,228. But during weekdays, that number swells to more than a million, with people coming in to the city from both near and really far.

Hypnotic animations developed by Mark Evan and published on his I Like Big Bytes blog show just where they are coming from. Evans used data compiled from the American Community Survey, which is conducted by the U.S. Census Bureau, and color-coded the most represented counties.

The question on many people’s mind, of course, is how many of those who currently commute via Metro will utilize alternatives during the year-long SafeTrack maintenance effort. WMATA has warned of “crush loads”, considering there will be 35-70 percent fewer trains in areas undergoing work surges (the first one, from East Falls Church to Ballston, will last from June 4-16).

If the Metropocalypse of March is any indication, many will choose to drive. But the region is already among the most gridlocked in the nation.

“The project will affect every single commuter,” Mayor Muriel Bowser said at a press conference Thursday where she outlined several steps the city is taking, adding that all of the repairs (even when the surges aren’t in D.C. proper) will impact the District. “We’re committed to doing everything we can do to ease this burden.”

Anyway, good luck getting around all those other dots.