J375 U.S.POST OFFICE

Facility details

FIRMS code

J375

Name

U.S.POST OFFICE

Address

500 WEST CHESTNUT EXPRESS

SPRINGFIELD, MO 65801

Status

Active (A)

Facility type

CBP administrative site (08)

CBP port

Springfield, MO (4505)

CBP region

3

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate J375 before you file

Check J375 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":"J375","port":"4505","use":"location_of_goods"}'