FIRMS code

W505 US POSTAL SERVICE-MAIN OFFICE

Name: US POSTAL SERVICE-MAIN OFFICE
Address: 799 H ST, ARCATA, CA, 95521-6240, US

Active CBP administrative site

Facility details

FIRMS code: W505
Name: US POSTAL SERVICE-MAIN OFFICE
Address: 799 H ST
ARCATA, CA 95521-6240
Status: Active (A)
Facility type: CBP administrative site (08)
CBP port: Eureka, CA (2802)
CBP region: 7
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate W505 before you file

Check W505 against the port and use on your filing before ACE does: list, status, port (ACE 164) and facility type.

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"W505","port":"2802","use":"location_of_goods"}'

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Nearby facilities in the same port

Code	Name	Type	Distance
W509	STOCKTON PACIFIC ENTERPRISES INC.	Importer's premises	10.1 km
W506	US POSTAL SERVICE-MAIN OFFICE	CBP administrative site	10.9 km
W503	SIERRA PACIFIC INDUSTRIES	Importer's premises	11.7 km
W508	FAIRHAVEN TERMINAL	Importer's premises	12.3 km
W507	HUMBOLT BAY FOREST PRODUCTS	Inspection facility	19.2 km

Source: U.S. Customs and Border Protection FIRMS code list, data as of 2026-10-23. FIRMSapi is not affiliated with CBP; confirm bond status and filing details in ACE.