here are more than one million management consulting firms in the United States, all collectively expected to generate almost $370 billion in revenue this year, according to IBISWorld. Across dozens of industries, consultants throughout the country help companies navigate challenges and seize opportunities in IT strategy, risk management, digital transformation and more.

Still, in such a large market, it can be difficult to discern which consulting firms are delivering the best results in their respective fields. That’s why Forbes partnered with market research company Statista to garner the opinions of industry insiders and create our ninth annual list of America’s Best Management Consulting Firms 2024.

The list is based on two surveys conducted from mid-November 2023 to mid-January 2024: a peer-to-peer survey open to partners and executives at management consulting firms; and a survey of clients who had worked with management consulting firms in the past four years. Both groups evaluated consulting firms within their areas of knowledge across 16 different industries (such as healthcare, consumer goods and insurance) and 16 different functional areas (including human resources, operations, and innovation and growth).

More than 1,100 partners and executives at management consulting firms recommended peers in their industry (respondents were not permitted to recommend themselves), and more than 1,200 clients recommended consulting firms. Last year’s results were considered as well.

All of the responses were combined into a scoring model that weighted this year’s recommendations more heavily than last year’s. And recommendations from the management consultants were weighted more heavily than those from clients.

Ultimately, the consulting firms with the most recommendations in each category were given star ratings: five stars for “very frequently recommended,” four stars for “frequently recommended” and three stars for “recommended.” The final list highlights 190 companies.

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As with all Forbes lists, companies do not pay any fee to be considered. For questions about this list, please contact listdesk [at] Forbes.com.