I respectfully disagree with many of the answers below. 10 and 11 can be quite different, both in terms of value and character of the homes. Both zips cover a range of areas, but generally speaking there is not much similar between 10 and 11 - they are very, very different areas. 10 covers Rockridge and Piedmont, which are quite different from one another. Both upscale and generally considered desirable, but very different schools, sizes of homes and scale. 11 covers much of Montclair, which was developed in an entirely different era, and has a different geological makeup. 11 also covers part of the area affected by the Oakland fire, which devastated acres of housing stock that was largely replaced/rebuilt new in the early 90's. If you are looking for a modest Craftsman that is walking distance to amenities, with sidewalks and good schools, you are looking in 10. If you are looking for grand Craftsman or traditional homes and great schools, you are looking at Piedmont. If you want a Sierra Foothills feeling, with trees and nature, you are looking in the 11'a. If you want a McMansion, newer construction, toney upscale feeling with views...you get my drift. So, it's not just the zipcode, it's the micro market within the zipcode.