W529 U.S. POST OFFICE

Facility details

FIRMS code

W529

Name

U.S. POST OFFICE

Address

1900 E ST

FRESNO, CA 93706-2010

Status

Active (A)

Facility type

CBP administrative site (08)

CBP port

Fresno, CA (2803)

CBP region

7

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate W529 before you file

Check W529 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":"W529","port":"2803","use":"location_of_goods"}'