Strategic Location Proximity of Westmoreland County To Major Cities  CITY  MILES  Pittsburgh, Pennsylvania  Cleveland, Ohio  Baltimore, Maryland/Washington, D.C.  Richmond, Virginia  Philadelphia, Pennsylvania  Detroit, Michigan  New York, New York  Chicago, Illinois  Boston, Massachusetts  30  130  160  220  225  230  275  425  450 :: Click here to enlarge map. :: Click here to enlarge map. Westmoreland County is within a 500-mile radius of 70% of the country's total population! This thriving county offers direct access to interstate highways, rail service, and the impressive Arnold Palmer Regional Airport. In addition, the Pittsburgh International Airport is less than an hour away and the City of Pittsburgh, the country's largest inland port, is only a 30-minute drive.