Company lists · Data refreshed September 2026
Top 24 Trade association law firms based in Portland, United States
RevenueBase identified 34 trade association law firms headquartered in Portland, United States as of September 2026 and tracks 469 professional contacts across them, including 316 with verified work emails. Across the United States, Washington is the largest hub for this category (215 companies); Portland has 34.
This list covers trade association law firms headquartered in Portland, 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 29, 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 24 largest trade association law firms based in Portland, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 93 contacts → | ||||
Partial evidence “Norman, Hanson & DeTroy, LLC, is a highly respected law firm in Maine with a widely diversified practice.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 65 contacts → | ||||
Indirect evidence “Excellent client service has always been our overarching goal.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 54 contacts → | ||||
Indirect evidence “Davis Rothwell is your source for Northwest litigation defense.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 39 contacts → | ||||
Indirect evidence “Deeply rooted in the great Northwest and nationally recognized for outstanding work for nearly 40 years, Stoll Berne has achieved extraordinary results for our clients through…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 36 contacts → | ||||
Indirect evidence “Chock Barhoum LLP is one of the preeminent litigation firms in the Northwest.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 32 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Partial evidence “Sokol Larkin, a boutique law firm located in Portland, Oregon, has earned its reputation as one of the Pacific Northwest’s premier firms in the areas of construction and design…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Partial evidence “Allegiant Law (formerly known as Richardson Wang) is a boutique Portland, Oregon law firm focusing on litigation and business matters.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 18 contacts → | ||||
Partial evidence “Brownstein Rask LLP has been a prominent midsize Portland law firm since its founding over 50 years ago.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Partial evidence “Energy, Environmental, and Telecommunications Law, these fields are undergoing constant change and rapid growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Partial evidence “Petruccelli, Martin & Haddow, LLP, one of Maine’s premier law firms, has been providing successful, aggressive and innovative legal representation in a wide variety of matters for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 10 contacts → | ||||
Partial evidence “Carr Butterfield, LLP is a client-focused law firm near Portland, Oregon.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Indirect evidence “Our business-like approach means that we provide clients with the highest quality legal representation at the best price.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 contacts → | ||||
Partial evidence “For nearly 60 years, the Oregon Trial Lawyers Association (OTLA) and its member attorneys have advocated for the rights of consumers by promoting safer products, workers' rights…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “Incorporated in 1973, Douglas, Denham, Buccina & Ernst represents individual and corporate clients in state and federal courts and before administrative tribunals throughout the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Partial evidence “We are a Portland based law firm with over 36 years of combined experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “The Gary Law Group provides all-inclusive legal representation and best practices consulting for manufacturers and sellers of windows, doors and skylights.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “Athan Papailiou provides trial, appellate, and general counseling solutions to public, private, and non-profit clients throughout the Pacific Northwest and beyond.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “We are lawyers with diverse experience who became lawyers for the right reasons.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Partial evidence “At Nichols Law Group, we are committed to earning the trust of our clients by providing the highest quality of legal representation while maintaining uncompromising ethics.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Indirect evidence “Litigation, regulatory compliance and risk management attorneys located in Portland Oregon, focusing on cost effective representation in the areas of business and product…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Indirect evidence “Are you frightened of harsh punishments that come with a criminal conviction?” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “At AltusLaw LLC, our attorneys have practical, real world experience and a commitment to unparalleled legal excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Underhill Law Office provides legal and government ethics and risk management advice to lawyers, law firms, corporate in-house counsel, government attorneys, elected officials and…” Source: RevenueBase Database · checked Sep 29, 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: trade association law firms. 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 trade association law firms.
- Partial evidence
- Its own public description names part of trade association law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name trade association law firms. 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 24 of 34 trade association law firms based in Portland, United States
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Trade association law firms based in Portland, United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 34 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 trade association law firms, 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 Portland, United States whose own description of what they do matches “trade association law firms”. 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 trade association law firms), 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 trade association law firms, and records with no verified work email. Companies headquartered outside Portland 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, 316 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 29, 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.
Trade association law firms by metro in the United States
- Trade association law firms in Washington215
- Trade association law firms in New York194
- Trade association law firms in Chicago129
- Trade association law firms in Houston120
- Trade association law firms in Los Angeles119
- Trade association law firms in Dallas99
- Trade association law firms in Atlanta97
- Trade association law firms in Austin76
- Trade association law firms in Boston72
- Trade association law firms in Miami64
- Trade association law firms in San Diego63
- Trade association law firms in San Francisco61
- Trade association law firms in Sacramento51
- Trade association law firms in Denver50
- Trade association law firms in Philadelphia49
- Trade association law firms in Phoenix49
- Trade association law firms in Tampa46
- Trade association law firms in Minneapolis45
- Trade association law firms in Seattle40
- Trade association law firms in Fort Lauderdale38
- Trade association law firms in Birmingham37
- Trade association law firms in Columbia36
- Trade association law firms in Irvine35
- Trade association law firms in Columbus34
- Trade association law firms in New Orleans30
- Trade association law firms in Coral Gables28
- Trade association law firms in Indianapolis28
- Trade association law firms in Oklahoma City28
- Trade association law firms in Raleigh28
- Trade association law firms in San Antonio28
- Trade association law firms in Las Vegas27
- Trade association law firms in Pittsburgh26
- Trade association law firms in Orlando25
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 trade association law firms, 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 trade association law firms are there based in Portland, United States?
RevenueBase identified 34 trade association law firms headquartered in Portland, 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?
Norman, Hanson & Detroy, LLC, headquartered in Portland, tops this list with the largest team on record.
Which city in the United States has the most trade association law firms?
Washington leads the United States with 215 headquartered companies, followed by New York (194) and Chicago (129). Portland has 34.
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 316 verified decision-maker contacts tracked across these 34 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 29, 2026.
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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.
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