For single shipping labels: Change the Origination ZIP Code under your Ship from address. For Multi-Order Shipping: Go to Edit > Ship From Address and enter the Origination ZIP Code. Note: The USPS DMM states that, for First Class, Media, Priority, or Express Mail, your labels are acceptable with the wrong Origination ZIP Code as long as the proper postage is paid (and all the prices would be the same between 75161 and 75126). So your Post Office cannot refuse a shipment where you have not changed it except for Parcel Post.
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