Thoracic cavity: Thoracic cavity, the second largest hollow space of the body. It is enclosed by the ribs, the vertebral column, and the sternum, or breastbone, and is separated from the
Map of ZIP Code. ZIP code 92407 is centered in San Bernardino County and overlaps Medical Service Study Area(s) 151e, 151e, 151g, 151g, 146, 146, 147, 147, 148 and 148.
Key Zip or Address or click on the map. This page shows a Google Map with an overlay of Zip Codes for Ontario, San Bernardino County, California. Users can easily view the boundaries of each Zip Code. Ontario, San Bernardino County, California Zip Code Map Boundary Version 3.0 Copyright Â© 1996-2017 USNaviguide LLC. All rights reserved.