Md. Code, Land Use § 20-101 : LAND USE — MARYLAND-NATIONAL CAPITAL PARK AND PLANNING COMMISSION — MARYLAND-WASHINGTON REGIONAL DISTRICT — GENERAL PROVISIONS —101 - Maryland-Washington Regional District TEXT PDF (a) There is a Maryland-Washington Regional District. (b) The regional district consists of: (1) the entire area of Montgomery County, subject to the limitations in Subtitle 7, Part I of this title and Title 24, Subtitle 2 of this article; and (2) the entire area of Prince George's County, except for the City of Laurel as it existed on July 1, 2013. Md. Code, LU § 20-101 Amended by 2013 Md. Laws, Ch. 627,Sec. 1, eff. 7/1/2013.