There are two parts to a blood type. One is the letter, A,B,AB, or O. This is the major part of the blood type. The other or minor part is the Rh type, which the A,B,AB, or O part is either positive or negative. Let me explain.
This guide shows the zip codes for each neighborhood in Washington DC arranged in alphabetical order. Get to Know the Neighborhoods of the DC Capital Region. Adams Morgan â zip code 20009. American University Park â zip code 20016.
Area Codes for Washington, DC. There are several area code s actively in use in the Washington, DC metropolitan area, including: 202, 703, 301. Washington, DC proper uses only the 202 area code. Nearby, northern Virginia uses 703 and 571 area codes and Maryland uses 301 and 240. In Washington, DC, area codes are always included in written telephone numbers and area codes must be dialed for all calls, even for local calling.