Is Washington D.C. part of the southeast region? yes or no that is all

* All I need is a yes or no :)

The largest city in the Southeast is Jacksonville, Florida, which has a population of over 868,000. Other populous cities include Charlotte, North Carolina; Washington, D.C.; Nashville, Tennessee; Memphis, Tennessee; and Baltimore, Maryland.

Thank you!

Wait, that is not what I asked XD

well it's something

Is Washington D.C. part of the southeast region? yes or no that is all I need.