Applied Math Rankings:
US News & World Report:http://grad-schools.usnews.rankingsandr ... s-rankings
Regression Rankings based on National Research Council Surveys:http://graduate-school.phds.org/ranking ... rank/basic
I believe both are from 2010 data.
My perception off the top of my head (without consulting the above links):
1. University of Maryland – AMSC
2. Northwestern - ESAM
3. University of Colorado – Boulder
4. UC Davis
5T. Rensselaer Polytechnic Institute
5T. University of Arizona
8. University of Delaware
Though I think Northwestern may be (slightly) more difficult to get into than Maryland.