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.
Zip Code 20018 Description. Zip Code 20018 is located in the state of District Of Columbia in the Washington D.C. metro area. Zip code 20018 is primarily located in District of Columbia County. The official US Postal Service name for 20018 is WASHINGTON, District Of Columbia. Portions of zip code 20018 are contained within or border the city limits of Washington, DC, Mount Rainier, MD, and Chillum, MD.