Post office in Caldwell

AgentData lists 5 post offices in Caldwell, United States. Updated May 2026.

5 businesses1 with websites
Adrian Post Office
Greenleaf Post Office

21344, Main Street, Greenleaf, 83626, ID

Full profile
Nyssa Post Office
Ontario Post Office
United States Post Office

Also in Caldwell

Elementary school ()Restaurant ()Fast food restaurant ()Hotel ()Hair salon ()Private sector bank ()Dentist ()Motel ()

Post office in nearby cities

Beckley ()Charleston ()Salisbury ()Lincoln ()Clarksburg ()Ottumwa ()Fort Dodge ()Rutland ()

Frequently asked questions

How many post offices are in Caldwell?

AgentData lists 5 post offices in Caldwell as of May 2026.

Which post offices in Caldwell have a website?

1 of 5 post offices in Caldwell have a website with verified contact details.

Is this data free?

Yes. AgentData is completely free — no credit card, no trial period, no paid tiers.

How is this data collected?

Business listings are sourced from OpenStreetMap and verified through our web crawler, which checks websites for email addresses, phone numbers, and technology stacks.

Access this data via API
GET /api/local-businesses?category=post-office&city=caldwell