Trustco Bank's routing number can vary depending on the state in which an account is opened. Generally, for customers located in New York, the routing number is often 021300024. However, it is important to note that if an account is opened in a different state, a different routing number may be applicable. To ensure that you have the correct routing number for your specific account, it is advisable to check the official Trustco Bank website or refer to your account documentation. This will provide you with the most accurate and relevant information based on your location and account details. Be sure to verify your routing number before initiating any transactions to avoid potential issues.