Company lists · Data refreshed September 2026

Top 25 Interface design firms based in the United States

Name: Interface design firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 6,414 companies tracked

RevenueBase identified 6,414 interface design firms headquartered in the United States as of September 2026 and tracks 68,135 professional contacts across them, including 24,591 with verified work emails. New York is the largest hub.

This list covers interface design firms 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

6,414Companies

68,135Contacts tracked

24,591Verified emails

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The 25 largest interface design firms based in the United States

Ranked by team size

Top 25 of 6,414 interface design firms based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to interface design firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Smithgroup	Partial evidence	Detroit, MI, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,849 contacts →
	Partial evidence “SmithGroup is an award-winning, multi-national integrated design firm that employs research, data, advanced technologies and design thinking to help clients solve their greatest…” Source: RevenueBase Database · checked Sep 20, 2026
2	Cannondesign	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,660 contacts →
	Partial evidence “CannonDesign is a different kind of design firm, where architecture, strategy, experience, innovation and social good converge to create meaningful impact.” Source: RevenueBase Database · checked Sep 20, 2026
3	IA Interior Architects	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	501-1,000	1,584 contacts →
	Partial evidence “Celebrating 40 years of visionary design and innovation, IA Interior Architects is the first global architecture firm focused exclusively on interiors.” Source: RevenueBase Database · checked Sep 20, 2026
4	HGA	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,543 contacts →
	Partial evidence “HGA is a national interdisciplinary design firm committed to making a positive, lasting impact for our clients and communities through research-based, holistic solutions.” Source: RevenueBase Database · checked Sep 20, 2026
5	IDEO	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	201-500	1,208 contacts →
	Partial evidence “IDEO (pronounced “EYE-dee-oh”) is a global design consultancy helping the world’s most audacious dreamers create braver tomorrows.” Source: RevenueBase Database · checked Sep 20, 2026
6	Lollypop Design Studio	Partial evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	201-500	1,078 contacts →
	Partial evidence “We are a full-stack design-to-development solution provider, that helps enterprises build future-ready products.” Source: RevenueBase Database · checked Sep 20, 2026
7	Ware Malcomb	Partial evidence	International Design Firm, United StatesHQ checked Sep 20, 2026	501-1,000	992 contacts →
	Partial evidence “Established in 1972, Ware Malcomb is a dynamic, forward-thinking design firm offering streamlined architecture, interior design, branding, and engineering services across the…” Source: RevenueBase Database · checked Sep 20, 2026
8	Smart Design	Partial evidence	Brooklyn, United StatesHQ checked Sep 20, 2026	n/a	814 contacts →
	Partial evidence “Smart Design is a strategic design company that helps people live better and work smarter.” Source: RevenueBase Database · checked Sep 20, 2026
9	Parkhill	Partial evidence	Lubbock, TX, United StatesHQ checked Sep 20, 2026	501-1,000	609 contacts →
	Partial evidence “We are a full-service design firm of extraordinary planners, designers, architects, and engineers.” Source: RevenueBase Database · checked Sep 20, 2026
10	Konrad	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	501-1,000	596 contacts →
	Partial evidence “Konrad is a global leader in AI and digital innovation consulting providing AI, strategy, design, and technology services to the world’s most ambitious businesses and brands.” Source: RevenueBase Database · checked Sep 20, 2026
11	Sasaki	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	515 contacts →
	Partial evidence “For over seventy years, Sasaki has brought together the best of architecture, interior design, landscape architecture, planning, urban design, civil engineering, graphic design…” Source: RevenueBase Database · checked Sep 20, 2026
12	TVS	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	51-200	467 contacts →
	Partial evidence “TVS is an award-winning architecture and interior design firm headquartered in Atlanta, GA with global project expertise.” Source: RevenueBase Database · checked Sep 20, 2026
13	KTGY	Partial evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	201-500	461 contacts →
	Partial evidence “Design Lives at KTGY.” Source: RevenueBase Database · checked Sep 20, 2026
14	Estudio Architecture	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	n/a	390 contacts →
	Partial evidence “eStudio is a specialized full service architectural and boutique design firm.” Source: RevenueBase Database · checked Sep 20, 2026
15	ASD SKY	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	201-500	344 contacts →
	Partial evidence “Established in 1963, ASD \| SKY has evolved into a multi-disciplinary design firm offering interiors, architectural, landscape, and graphic design services to a variety of…” Source: RevenueBase Database · checked Sep 20, 2026
16	Cooper Carry	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	201-500	336 contacts →
	Partial evidence “Cooper Carry is a national architecture firm that brings an internationally recognized team of design professionals to the wide variety of project types we engage in, all united…” Source: RevenueBase Database · checked Sep 20, 2026
17	Hord Coplan Macht	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	201-500	333 contacts →
	Partial evidence “Hord Coplan Macht is an integrated firm offering planning, architecture, landscape architecture, interior design and environmental graphic design with offices in Baltimore…” Source: RevenueBase Database · checked Sep 20, 2026
18	DES	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 20, 2026	51-200	316 contacts →
	Indirect evidence “Born and bred in the Bay Area, DES shares the trailblazing spirit of Silicon Valley.” Source: RevenueBase Database · checked Sep 20, 2026
19	Mithun	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	287 contacts →
	Partial evidence “Mithun is an integrated design firm dedicated to creating positive change in people’s lives.” Source: RevenueBase Database · checked Sep 20, 2026
20	TPG Architecture	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	274 contacts →
	Partial evidence “TPG Architecture is a leading New York City-based design firm focused on creating interior environments that serve our clients' strategic objectives.” Source: RevenueBase Database · checked Sep 20, 2026
21	ESA	Partial evidence	Nashville, TN, United StatesHQ checked Sep 20, 2026	51-200	273 contacts →
	Partial evidence “ESa is a nationally recognized architecture and design firm based in Nashville, Tenn, specializing in architecture, interior design, master planning and space planning.” Source: RevenueBase Database · checked Sep 20, 2026
22	Saggezza, An Apexon Company	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 20, 2026	501-1,000	273 contacts →
	Indirect evidence “Saggezza is now part of Apexon.” Source: RevenueBase Database · checked Sep 20, 2026
23	JMA	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 20, 2026	n/a	250 contacts →
	Partial evidence “At JMA, focus is on design excellence and the ability to combine creativity with technical, environmental and operational planning skills necessary to a project's success.” Source: RevenueBase Database · checked Sep 20, 2026
24	Lionakis	Partial evidence	Sacramento, CA, United StatesHQ checked Sep 20, 2026	201-500	244 contacts →
	Partial evidence “Lionakis was established in 1909 and is a multi-disciplinary firm specializing in architectural, structural engineering, and interior design services.” Source: RevenueBase Database · checked Sep 20, 2026
25	PCA	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 20, 2026	51-200	244 contacts →
	Partial evidence “Founded in 1982, PCA is recognized as one of Greater Boston’s most responsive and innovative design firms.” Source: RevenueBase Database · checked Sep 20, 2026

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: interface design 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 interface design firms.
Partial evidence: Its own public description names part of interface design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interface design 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 25 of 6,414 interface design firms based in the United States

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Interface design firms based in the United States at a glance

As of Sep 20, 2026

36.1%Verified-email coverage

10.6Average contacts per company

1-10Median size (employees)

7.3%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

4,852

11-50

1,248

51-200

245

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 6,414 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 interface design 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 the United States whose own description of what they do matches “interface design 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 interface design 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 interface design firms, 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, 24,591 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.

Interface design firms by metro

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 interface design 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 interface design firms are there based in the United States?

RevenueBase identified 6,414 interface design firms 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?

Smithgroup, headquartered in Detroit, tops this list with the largest team on record.

Which city has the most interface design firms?

New York leads with 469 headquartered companies, followed by Los Angeles (276) and San Francisco (265).

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 24,591 verified decision-maker contacts tracked across these 6,414 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.

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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.