I think you can work with some of the links given below to find an estimation of population(graduate) in the country USA. After getting that put them as a complete data set in 'IBM SPSS'.In the meantime when you have finished making your data set just switched into the 'analysis' that you want to generate.Thanks.

http://www.governing.com/gov-data/educational-attainment-metro-areas-2010-census-acs.html

http://www.governing.com/blogs/by-the-numbers/graduate-professional-degrees-for-metro-areas.html

http://www.ohe.state.mn.us/fc/2108/pg.cfm

https://wallethub.com/edu/most-and-least-educated-cities/6656/

http://www.forbes.com/sites/emsi/2013/02/21/the-u-s-cities-that-lag-and-excel-in-degree-attainment/#574aeae22261

Dear Mr. Julkar,

Thank you so much for kind help. 

Regards,

Masud