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	18-4149	52630	IA	Hillsboro	Henry	Main Office	Post Office	11/01/2018
New	18-0963	52630	IA	Bonaparte	Henry	Hillsboro	Place Name	05/03/2025	Post Office™ discontinued. Retain ZIP Code™. Establish a Place Name. Continue to use Hillsboro, IA 52630 as the last line of address.
Old	16-4044	61328	IL	Kasbeer	Bureau	Main Office	Post Office	07/08/2001
New	16-5844	61328	IL	Ohio	Bureau	Kasbeer	Place Name	05/03/2025	Post Office discontinued. Retain ZIP Code. Establish a Place Name. Continue to use Kasbeer, IL 61328 as the last line of address.
Old	24-1751	02027	MA	Dedham	Norfolk	East Dedham	Classified Station	01/31/2020
New	24-1751	02027	MA	Dedham	Norfolk	Main Office	Post Office	05/10/2025	Classified Station discontinued. Retain ZIP Code. Continue to use Dedham, MA 02027 as the last line of address.
Old	26-6880	56274	MN	Norcross	Grant	Main Office	Post Office	10/25/2019
New	26-4380	56274	MN	Herman	Grant	Norcross	Place Name	05/10/2025	Post Office discontinued. Retain ZIP Code. Establish a Place Name. Continue to use Norcross, MN 56274 as the last line of address.
Old	37-2240	58429	ND	Dazey	Barnes	Main Office	Post Office	12/29/2017
New	37-1968	58429	ND	Cooperstown	Barnes	Dazey	Place Name	05/10/2025	Post Office discontinued. Retain ZIP Code. Establish a Place Name. Continue to use Dazey, ND 58429 as the last line of address.

— Address Management, Addressing and Geospatial Technology, 5-15-25