In May 2026, the Port of Seattle & Tacoma received 661 kt of containerised imports worth $3.50B (+3% by weight vs May 2025), led by China at 213 kt. Counted by US customs from declarations filed under penalty; mirrored and revision-tracked by the Trimtab US Trade Ledger. Updated: 2026-08-06.
43 merchant vessels alongside, 56 at anchor, 28 underway in the gateway zone (150 m+, AIS type 70–79). Latest observation: 2026-08-05T13:31:31.480ZZ. Live board: /gateways.
Source: US Census Bureau port-level trade
(port of unlading, verified — landlocked ports report zero vessel weight). Grand-total rows
only for totals; DET country rows for the breakdown — the overlapping APEC/OECD groupings
Census ships in the same response are excluded, or every figure would read ~3× too high.
Census revises prior months; this mirror archives every restatement.
Cross-checked against independent AIS observation of the same gateways
(method).
CSV: aggregate series ·
MCP: query_series, gateway_conditions — no API key ·
Other gateways: Los Angeles & Long Beach · New York & New Jersey · Savannah · Houston · Charleston · Norfolk · Oakland