FIRMS code

K120 U. S. POST OFFICE

Active Inspection facility

Facility details

FIRMS code: K120
Name: U. S. POST OFFICE
Address: 603 MAIN ST
RACINE, WI 53403-1268
Status: Active (A)
Facility type: Inspection facility (05)
CBP port: Racine, WI (3708)
CBP region: 3
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate K120 before you file

Check K120 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":"K120","port":"3708","use":"location_of_goods"}'

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Other codes at this address

Many facilities hold several FIRMS codes, for example one per facility type or operator.

Code	Name	Type	Status
H705	RACINE CUSTOMS OFFICE	CBP administrative site	Active

Nearby facilities in the same port

Code	Name	Type	Distance
K039	MERCHANT MOVING AND STORAGE	Inspection facility	1.1 km
H722	MASSEY FERGUSON INC	Importer's premises	2.8 km
K083	ABF FREIGHT SYSTEMS INC	Inspection facility	3.0 km
I676	ESTES EXPRESS LINES	Inspection facility	4.0 km
H718	JOHN H. BATTEN FIELD	CBP administrative site	4.7 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.