Diamond Credit Union is located on 1600 Medical Dr in Pottstown. Diamond Credit Union offers a number of products and services, which include Auto Budget Planning, Mortgages, Loans, Financial Planning, Houses, Individual Services, Personal, Banks, Banking Services . Diamond Credit Union also carries a range of brands such as MasterCard Diamond Credit Union can be reached by phone by calling (610) 326-2339 . Diamond Credit Union has a total of 4 reviews, 4 positive reviews and 0 negative reviews.