As the nation\'s largest multiple listing service, MRIS serves nearly 60,000 licensed real estate professionals in Washington, DC, Maryland, Northern Virginia and parts of West Virginia and Pennsylvania. Customers currently have access to over 110,000 active listings, an archive of nearly 1.7 million comparable listings and in excess of 4.7 million public records. MRIS has facilitated the generation of over $40 billion in sales volume and more than 96,000 transactions thus far in 2007.