FIRMS code

N317 U.S. POST OFFICE MAIL FACILITY

Name: U.S. POST OFFICE MAIL FACILITY
Address: 311 W MONROE ST, JACKSONVILLE, FL, 32202-4242, US

Active Importer's premises

Facility details

FIRMS code: N317
Name: U.S. POST OFFICE MAIL FACILITY
Address: 311 W MONROE ST
JACKSONVILLE, FL 32202-4242
Status: Active (A)
Facility type: Importer's premises (06)
CBP port: Jacksonville, FL (1803)
CBP region: 4
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate N317 before you file

Check N317 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":"N317","port":"1803","use":"location_of_goods"}'

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Nearby facilities in the same port

Code	Name	Type	Distance
N303	JAX NAVAL AIRSTATION	Importer's premises	550 m
N269	Crowley Logistics, Inc.	Container freight station	860 m
L0X2	Farnell Freight Forwarders, Inc.	Bonded warehouse	2.3 km
L0X3	Farnell Freight Forwarders, Inc.	Container freight station	2.3 km
LA52	Laney & Duke Terminal Warehouse, Inc.	Bonded warehouse	2.6 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.