What is northwestern phone number? The customer support phone number of Northwestern Mutual is +1-414-271-1444 (Click phone number to call).Is northwestern university a private university? Northwestern University (NU) is a private research university with campuses in Evanston and Chicago in Illinois, United States.How perse is northwestern university? Overall Diversity is Great. We combine elements of ethnic, geographic, age and gender persity to come up with a total persity grade for every school. Quite perse across all factors, Northwestern University is ranked #20 nationwide.How good of a school is northwestern? Northwestern is known across the country as a prominent school with hard-working students and extremely qualified professors. While size truly varies based on a student's personality, I find Northwestern to be the perfect size for me. There are about 8,000 students on campus, and it is pretty average in population compared to other schools.