A450 POST OFFICE SUB-STATION

Facility details

FIRMS code

A450

Name

POST OFFICE SUB-STATION

Address

FEDERAL BUILDING

WORCESTER, MA 01601

Status

Active (A)

Facility type

CBP administrative site (08)

CBP port

Worcester, MA (0403)

CBP region

1

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate A450 before you file

Check A450 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":"A450","port":"0403","use":"location_of_goods"}'