EXHIBIT 23

Consent of Independent Registered Public Accounting Firm

Codorus Valley Bancorp, Inc. 

York, Pennsylvania

We hereby consent to the incorporation by reference in the Registration Statements on Forms S-3 (No. 333-46171, No. 333-179179, No. 333-157145, No. 333-192474, No. 333-195484, No. 333-214084), Forms S-8 (No. 333-40532, No. 333-68410, No. 333-143682, No. 333-143683, No. 333-182800, No. 333-182801, No. 333-09277, and No. 333-61851) and Form S-8 (No. 333-218031) of Codorus Valley Bancorp, Inc. of our reports dated March 13, 2018, relating to the consolidated financial statements and the effectiveness of Codorus Valley Bancorp, Inc.’s internal control over financial reporting, which appear in this Form 10-K.

/s/BDO USA, LLP

Harrisburg, Pennsylvania 

March 13, 2018

122