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US Post Office
One of 15 shipping or delivery service listings in Newcastle.
About US Post Office
US Post Office is a shipping or delivery service in the public service and government sector, based in Newcastle, CA. Its recorded address is 9241 Old State Hwy, 95658. The listing includes a telephone number, an official website. It is one of 15 shipping or delivery service listings tracked in Newcastle; the nearest comparable listing is NEWCASTLE, within walking distance in NEWCASTLE. US Post Office has 7,292 listed locations in total; this page covers the Newcastle branch.
- Address
- 9241 Old State Hwy, Newcastle, CA, 95658
- Phone
- (800) 275-8777
- Website
- tools.usps.com
- Social
Questions
Where is US Post Office located?
9241 Old State Hwy, Newcastle, CA, 95658
How do I contact US Post Office?
(800) 275-8777 · https://tools.usps.com/find-location.htm?location=1374958
What type of business is US Post Office?
US Post Office is a shipping or delivery service (public service and government) in Newcastle.
US Post Office branches
US Post Office has 7,292 listed locations. This branch is in Newcastle.
- Kailua Kona96740-2440
- Hilo96720
- Hilo96720
- Laupahoehoe96764-9997
- Kapaau96755-3001
- Kihei96753
- Lanai City96763
- Pukalani96788
- Lahaina96761
- Honolulu96817
Nearby shipping or delivery service
- NEWCASTLENEWCASTLE0.0 km
- United States Postal ServiceNewcastle0.0 km
- Newcastle Post OfficeNewcastle0.0 km
- PENRYNPENRYN3.9 km
- US Post OfficePenryn3.9 km
- United States Postal ServicePenryn3.9 km
- Post Office-PenrynPenryn3.9 km
- Two Men and A TruckPenryn5.1 km
- US Post OfficeAuburn5.4 km
- AUBURNAUBURN5.7 km
- United States Postal ServiceAuburn5.8 km
- US Post OfficeAuburn5.8 km
- UPS Access Point locationAuburn5.7 km
- UPS Alliance Shipping PartnerAuburn5.9 km
- UPS Access Point locationAUBURN5.9 km
Cite this page
“US Post Office, Newcastle — business.wiki, retrieved August 2026.” Facts on this page come from openly licensed data (Overture Maps Foundation) and are refreshed with each monthly release; sourcing is documented on the methodology page.