GU Prefix and Three-Letter Port Code
Guam UN/LOCODE entries use the GU country or territory prefix followed by a three-character location identifier. Examples in the indexed sample include GUGUA, GUGUM, GUAGA and GUAPR.
Seaports in Guam: Port Codes, Throughput & Regional Guide (2026)
Guam has 4 ports and terminals indexed in the Ecer Freight database, supporting Pacific island logistics, military-related supply chains and regional ocean freight connections.
Use UN/LOCODE references to identify Guam port locations and compare available international shipping options.
Guam Seaport Overview
Guam is a strategically located Pacific island shipping market. Apra Harbor is the principal commercial port complex, while the indexed code set also includes city-level and harbor-related references. Indexed coverage and internationally comparable container rankings are separate measures.
4
Guam ports & terminals indexed in our database
Ecer Freight database · Nov 2026
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Official cargo throughput in tonnes, 2025; year-on-year change not published in a comparable public series
Port of Guam · 2025 public data review
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Container throughput in TEU, 2025; year-on-year change not published in a comparable public series
Port of Guam · 2025 public data review
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Commercial berths, 2025; year-on-year change not published in a comparable public series
Port of Guam · 2025 public data review
How many seaports does Guam have?
Guam has 4 seaports and terminals indexed by Ecer Freight in its Nov 2026 database snapshot. This is an indexed coverage figure rather than a universal count of every maritime facility.
Which is Guam's main commercial port?
Apra is the main commercial harbor reference in the indexed sample, while Guam (GUGUA) is the leading port record by database activity ordering. Commercial operations are generally associated with the Port of Guam and Apra Harbor.
Which area handles most of Guam's ocean freight?
Apra Harbor is the principal freight area for Guam. The indexed records Apra (GUAPR) and Guam (GUGUA) are the most relevant references for commercial ocean cargo, subject to carrier and terminal confirmation.
Top Ports in Guam by Indexed Activity
The table below lists all four Guam port records available in the supplied database sample. A comparable 2025 world-ranking series in million TEU was not publicly available for these individual Guam records; therefore, rank, throughput and year-on-year fields are left consistently unreported rather than estimated.
Guam port records and 2025 container comparison fields
Guam Port Regions and Cargo Roles
Guam has a concentrated maritime geography rather than several separate mainland port regions. The groupings below distinguish the principal commercial harbor reference from other indexed city and port-code records.
Apra Harbor Commercial Cluster
This cluster is the primary reference for commercial ocean freight and port operations serving Guam.
Commercial harbor records
Guam Port Reference Cluster
These records provide additional city-level or port-level references used when matching shipping documents, schedules and cargo inquiries.
Guam reference records
| Port | UN-LOCODE | City / Province | Main cargo role |
|---|---|---|---|
| Guam | GUGUM | Guam | Port and destination reference |
Agana Reference Cluster
Agana is retained as a separate indexed location record and should be checked against the carrier booking reference before cargo is routed.
Agana location record
| Port | UN-LOCODE | City / Province | Main cargo role |
|---|---|---|---|
| Agana | GUAGA | Agana | Location and destination reference |
Guam UN/LOCODE Guide
City-Level and Port-Level References
A code may identify a city, harbor or other transport location rather than a single berth. The code should therefore be matched with the terminal name, carrier schedule and bill of lading instructions before booking.
How to Verify a Guam Port Code
Compare the code against the UNECE UN/LOCODE reference and the Ecer Freight port directory. Carrier systems may apply operational terminal references in addition to the standard location code.
Shipping from Guam: Main Trade Lanes
Guam's ocean freight network is shaped by Pacific geography, vessel schedules, transshipment options and equipment availability. Transit times are indicative only and require confirmation against the sailing date, service string and cargo type.
Guam to the U.S. West Coast
A principal long-haul lane for commercial cargo moving between Guam and mainland North American distribution networks.
Guam to East Asia
Regional services connect Guam with Asian production, distribution and transshipment markets, with schedules varying by carrier and season.
Guam to the Western Pacific
Western Pacific services support island supply chains and project cargo movements across nearby regional markets.
Imports into Guam
Inbound services generally carry consumer goods, construction materials, food products, equipment and other essential supplies for the local market.
Data Sources and Methodology
The page separates Ecer Freight's indexed port coverage from official operational statistics and globally comparable container league tables. Figures are shown for the latest complete statistical year available, with 2025 used as the target reference year where applicable.
- Ecer Freight Ports Database — first-party index containing 4 Guam port and terminal records in the Nov 2026 snapshot.
- United Nations Economic Commission for Europe — UN/LOCODE structure and location-code reference methodology.
- Port Authority of Guam — official port context and operational information; public 2025 TEU, tonnage and berth series were not available for a like-for-like individual-code comparison.
- U.S. Census Bureau — U.S. trade and geographic statistical context where applicable; figures should be checked against the relevant reporting basis.
- National Geospatial-Intelligence Agency — maritime geographic and port-reference context for navigation and location verification.
Guam Seaport FAQ
How many seaports does Guam have?
Guam has 4 seaports and terminals indexed by Ecer Freight in the Nov 2026 database snapshot.
What is the main commercial port in Guam?
Apra Harbor is generally regarded as Guam's principal commercial harbor. The indexed records Guam (GUGUA) and Apra (GUAPR) are the key references for commercial ocean freight.
What are the main Guam port codes?
The supplied Ecer Freight sample contains GUGUA, GUGUM, GUAGA and GUAPR. Each code begins with the GU prefix and should be checked against the booking and terminal details.
Which Guam area handles most freight?
Apra Harbor is the main freight area for Guam. The Apra and Guam records are the most relevant indexed references for commercial cargo routing.
Are 2025 Guam port throughput figures available?
A comparable public 2025 TEU, tonnage and year-on-year series was not available for each individual indexed Guam record at the time of the Nov 2026 review. Carrier or port-specific figures should be confirmed directly for operational planning.
How can a shipment from Guam be quoted?
Shipment pricing depends on origin or destination, equipment, cargo details, sailing schedule, transshipment, documentation and local charges. FCL and LCL rate searches can be used to request an indicative comparison.
Are Guam port codes the same as terminal codes?
Not always. A UN/LOCODE may identify a broader city or port location, while a carrier or terminal system may use a more specific operational code. The code, terminal name and booking instructions should be reconciled before dispatch.
Editorial note: This Guam guide combines Ecer Freight's first-party port index with public maritime and geographic references. Port coverage is reviewed against the database snapshot, while operational statistics and schedules are updated or checked periodically as official and carrier information becomes available.
Ecer Freight · Seaports in Guam: Port Codes, Throughput & Regional Guide (2026) · Data reviewed quarterly · Port Codes · Ports by Country · Contact