Organization Information

Address Management

Post Office Changes

The table shown here includes Post Offices that have been suspended for years. Customers in these communities are being served by nearby offices. The listings in this table represent the administrative action of the Postal Service™ officially closing these offices.

 

Old/New	Finance No.	ZIP Code	State	P.O. Name	County/Parish	Station/ Branch/Unit	Unit Type	Effective Date	Comments
Old	18-0585	50515	IA	Ayrshire	Palo Alto	Main Office	Post Office	07/13/2017
New	18-2943	50515	IA	Emmetsburg	Palo Alto	Ayrshire	Place Name	09/13/2025	Post Office™ discontinued. Retain ZIP Code™. Establish a Place Name. Continue to use Ayrshire, IA 50515 as the last line of address.
Old	24-0867	02020	MA	Brant Rock	Plymouth	Main Office	Post Office	07/07/2015
New	24-4386	02020	MA	Marshfield	Plymouth	Brant Rock	Place Name	09/13/2025	Post Office discontinued. Retain ZIP Code. Establish a Place Name. Continue to use Brant Rock, MA 02020 as the last line of address.
Old	55-7434	26434	WV	Shirley	Tyler	Main Office	Post Office	12/11/2020
New	55-8568	26434	WV	West Union	Tyler	Shirley	Place Name	09/13/2025	Post Office discontinued. Retain ZIP Code. Establish a Place Name. Continue to use Shirley, WV 26434 as the last line of address.

— Address Management, Addressing & Retail Technology Service, 9-18-25