Company lists · Data refreshed September 2026
Top 25 Port authorities based in the United States
RevenueBase identified 290 port authorities headquartered in the United States as of September 2026 and tracks 15,498 professional contacts across them, including 5,871 with verified work emails. Houston is the largest hub.
This list covers port authorities headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest port authorities based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,911 contacts → | ||||
Partial evidence “Founded in 1911, the Port owns and operates Seattle-Tacoma International Airport, Fishermen’s Terminal, home of the North Pacific fishing fleet, and public marinas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,076 contacts → | ||||
Partial evidence “Ports America is the leading U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 696 contacts → | ||||
Partial evidence “At the Massachusetts Port Authority (Massport), we connect Massachusetts and New England to the world-safely, securely, and efficiently.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 677 contacts → | ||||
Partial evidence “Our Story For more than 100 years, Port Houston has owned and operated the public wharves and terminals along the Houston Ship Channel, including the area’s largest breakbulk…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 671 contacts → | ||||
Indirect evidence “Founded by Fred R.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 642 contacts → | ||||
Partial evidence “Georgia’s Ports in Savannah and Brunswick are strategic gateways, creating the most competitive supply chains in the nation with their level of operations, connectivity and supply…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 552 contacts → | ||||
Partial evidence “The Port of Long Beach is one of America’s premier seaports and a trailblazer in goods movement and environmental stewardship.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 503 contacts → | ||||
Partial evidence “The Port of San Diego champions Maritime, Waterfront Development, Public Safety, Experiences and Environment along 34 miles of San Diego Bay, all focused on enriching the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 422 contacts → | ||||
Partial evidence “We at the Port of Oakland invest our resources in quality facilities and services for our airport, real estate, and seaport tenants and customers, so that through their activities…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 357 contacts → | ||||
Indirect evidence “Maher Terminals LLC is one of the largest multi user container terminal operators in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 352 contacts → | ||||
Indirect evidence “America's Most Modern Gateway ℠” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 284 contacts → | ||||
Partial evidence “South Carolina Ports owns and operates public seaport and intermodal facilities in Charleston, Greer and Dillon, handling more than $75 billion in commerce annually.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 270 contacts → | ||||
Partial evidence “TICO is mission driven to be the most respected provider of equipment and services in the port, terminal, distribution, logistics, and intermodal space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 255 contacts → | ||||
Indirect evidence “The Delaware River & Bay Authority (DRBA), created by Compact in 1962, provides vital transportation links between the two states of Delaware and New Jersey.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 247 contacts → | ||||
Partial evidence “A major gateway to Asia and Alaska, the Port of Tacoma is among the largest container ports in North America.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 216 contacts → | ||||
Indirect evidence “Located in the Southeastern U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 216 contacts → | ||||
Indirect evidence “Associated Terminals is the largest and most diverse cargo handling and logistical solutions company operating terminal facilities on the Lower Mississippi River.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 192 contacts → | ||||
Indirect evidence “Gulf Stream Marine is a leader in cargo handling, stevedoring and terminal operations in the Gulf Coast region.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 181 contacts → | ||||
Partial evidence “The Alabama Port Authority, headquartered in Mobile Alabama, oversees the deepwater port and multimodal assets that drive economic growth for Alabama and the broader Gulf Coast…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 164 contacts → | ||||
Partial evidence “Florida’s premier seaport, Port Canaveral delivers an unmatched experience for cruise travel and cargo operations with a customer-forward approach and convenient, centralized…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 143 contacts → | ||||
Partial evidence “Port NOLA’s unique geographical location, inland connections and diverse capabilities set us apart.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 133 contacts → | ||||
Indirect evidence “SEACOR Island Lines offers marine transportation, drayage, stevedoring, cargo loading, agency, wharfage, and terminal services at various locations within South Florida.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 131 contacts → | ||||
Indirect evidence “SJTA's mission is to provide the traveling public with safe and efficient transportation through the acquisition, construction, maintenance, and operations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 126 contacts → | ||||
Partial evidence “North Carolina's Ports in Wilmington and Morehead City, plus an inland terminal in Charlotte, link the State's consumers, businesses and industry to world markets, and serve as…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 119 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: port authorities. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names port authorities.
- Partial evidence
- Its own public description names part of port authorities, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name port authorities. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 290 port authorities based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,871 reachable decision-makers.
Free signup · no credit card
Port authorities based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 290 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among port authorities, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “port authorities”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names port authorities), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among port authorities, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 5,871 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names port authorities, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many port authorities are there based in the United States?
RevenueBase identified 290 port authorities headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Port Of Seattle, headquartered in Seattle, tops this list with the largest team on record.
Which city has the most port authorities?
Houston leads with 13 headquartered companies, followed by Long Beach (10) and New Orleans (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,871 verified decision-maker contacts tracked across these 290 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 290 port authorities based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Port authorities by geography
- Port authorities based in Argentina
- Port authorities based in Australia
- Port authorities based in Belgium
- Port authorities based in Brazil
- Port authorities based in Canada
- Port authorities based in Chile
- Port authorities based in Colombia
- Port authorities based in Egypt
- Port authorities based in Finland
- Port authorities based in France
- Port authorities based in Germany
- Port authorities based in Greece
Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.