S185 U S POST OFFICE

Facility details

FIRMS code

S185

Name

U S POST OFFICE

Address

2700 E SAUNDERS ST

LAREDO, TX 78041-5437

Status

Active (A)

Facility type

CBP administrative site (08)

CBP port

Laredo, TX (2304)

CBP region

6

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate S185 before you file

Check S185 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":"S185","port":"2304","use":"location_of_goods"}'