Find the best colleges in the United States. Williams College. Located in Massachusetts, it is a highly appreciated and valued American college. The overall enrollment here equals to 2,047 annually, so it is not the largest college in the US. The acceptance rate achieves 15%. The local alumni may count on the salaries around $42,000 on the average. The most popular majors are biology and math. The local economics program also attracts many students from different regions of the country.