Company lists · Data refreshed September 2026

Top 25 Petrochemicals companies based in the United States

Name: Petrochemicals companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 690 companies tracked

RevenueBase identified 690 petrochemicals companies headquartered in the United States as of September 2026 and tracks 78,959 professional contacts across them, including 25,551 with verified work emails. Houston is the largest hub.

This list covers petrochemicals companies 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 15, 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 15, 2026 86% judged on-target in blind review

690Companies

78,959Contacts tracked

25,551Verified emails

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The 25 largest petrochemicals companies based in the United States

Ranked by team size

Top 25 of 690 petrochemicals companies based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to petrochemicals companies: 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	Lyondellbasell	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	10001+	13,939 contacts →
	Indirect evidence “We are LyondellBasell (NYSE: LYB) – a leader in the global chemical industry creating solutions for everyday sustainable living.” Source: RevenueBase Database · checked Sep 15, 2026
2	Valero	Strong evidence	San Antonio, TX, United StatesHQ checked Sep 15, 2026	10001+	9,405 contacts →
	Strong evidence “Valero is an international manufacturer and marketer of transportation fuels and petrochemical products.” Source: RevenueBase Database · checked Sep 15, 2026
3	Hess Corporation	Indirect evidence	New York, NY, United StatesHQ checked Sep 15, 2026	1,001-5,000	4,642 contacts →
	Indirect evidence “Hess Corporation is a global independent energy company engaged in the exploration and production of crude oil and natural gas.” Source: RevenueBase Database · checked Sep 15, 2026
4	Chevron Phillips Chemical Company	Indirect evidence	Spring, TX, United StatesHQ checked Sep 15, 2026	5,001-10,000	4,580 contacts →
	Indirect evidence “Chevron Phillips Chemical is one of the world’s top chemical manufacturers of olefins and polyolefins and a leading supplier of aromatics, alpha olefins, styrenics, specialty…” Source: RevenueBase Database · checked Sep 15, 2026
5	CITGO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	4,396 contacts →
	Indirect evidence “CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand.” Source: RevenueBase Database · checked Sep 15, 2026
6	Flint Hills Resources	Indirect evidence	Wichita, KS, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,891 contacts →
	Indirect evidence “Flint Hills Resources is a leading refining company with operations primarily in the Midwest and Texas.” Source: RevenueBase Database · checked Sep 15, 2026
7	Motiva Enterprises LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,668 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Motiva refines, distributes and markets petroleum products throughout the Americas.” Source: RevenueBase Database · checked Sep 15, 2026
8	Formosa Plastics Corporation, U.S.A	Indirect evidence	Livingston Township, NJ, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,068 contacts →
	Indirect evidence “Founded in 1978, Formosa Plastics Corporation, U.S.A.” Source: RevenueBase Database · checked Sep 15, 2026
9	HF Sinclair	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 15, 2026	5,001-10,000	2,026 contacts →
	Indirect evidence “Headquartered in Dallas, Texas, HF Sinclair Corporation is an independent, diversified energy company committed to safely producing products that power the world.” Source: RevenueBase Database · checked Sep 15, 2026
10	Stepan Company	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,876 contacts →
	Indirect evidence “Stepan Company's vision is to create innovative solutions for a cleaner, healthier, more energy efficient world.” Source: RevenueBase Database · checked Sep 15, 2026
11	Tesoro Corporation	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 15, 2026	5,001-10,000	1,795 contacts →
	Indirect evidence “Tesoro has acquired Western Refining and adopted a new name, Andeavor.” Source: RevenueBase Database · checked Sep 15, 2026
12	SI Group	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,665 contacts →
	Indirect evidence “At SI Group, we create smart chemistry that solves global challenges and makes great things possible.” Source: RevenueBase Database · checked Sep 15, 2026
13	Tetra Technologies, INC	Indirect evidence	Spring, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,332 contacts →
	Indirect evidence “Founded in 1981, TETRA continues to apply its 40+ years of expertise in fluids chemistry to forge the pathway to future success while remaining the ONE trusted leader in the…” Source: RevenueBase Database · checked Sep 15, 2026
14	Delek US	Indirect evidence	Brentwood, TN, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,297 contacts →
	Indirect evidence “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Source: RevenueBase Database · checked Sep 15, 2026
15	Ergon INC	Indirect evidence	Flowood, MS, United StatesHQ checked Sep 15, 2026	1,001-5,000	779 contacts →
	Indirect evidence “Family-owned and operated, the Ergon companies were brought together over 70 years ago in the petroleum industry's service sector.” Source: RevenueBase Database · checked Sep 15, 2026
16	CVR Energy, INC	Indirect evidence	Sugar Land, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	742 contacts →
	Indirect evidence “Headquartered in Sugar Land, Texas, CVR Energy is a diversified holding company primarily engaged in the renewable fuels and petroleum refining and marketing businesses, as well…” Source: RevenueBase Database · checked Sep 15, 2026
17	TPC Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	501-1,000	731 contacts →
	Indirect evidence “Headquartered in Houston, Texas, TPC Group is a leader in providing highly specialized lines of chemical products to major chemical and petroleum-based companies worldwide.” Source: RevenueBase Database · checked Sep 15, 2026
18	OXBOW	Indirect evidence	West Palm Beach, FL, United StatesHQ checked Sep 15, 2026	501-1,000	487 contacts →
	Indirect evidence “Founded in 1983 by principal shareholder William I.” Source: RevenueBase Database · checked Sep 15, 2026
19	Daikin America, INC	Indirect evidence	Orangeburg, NY, United StatesHQ checked Sep 15, 2026	201-500	453 contacts →
	Indirect evidence “Daikin has been a world leader in the development, manufacture and sales of fluoropolymers and chemistry since 1924.” Source: RevenueBase Database · checked Sep 15, 2026
20	Ketjen Corporation	Strong evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	440 contacts →
	Strong evidence “Ketjen is a provider of advanced catalyst solutions to leading producers in the petrochemical and refining industries.” Source: RevenueBase Database · checked Sep 15, 2026
21	Emery Oleochemicals	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 15, 2026	201-500	439 contacts →
	Indirect evidence “Emery Oleochemicals is a leading global specialty chemicals manufacturer.” Source: RevenueBase Database · checked Sep 15, 2026
22	Imperative Chemical Partners	Indirect evidence	Midland, TX, United StatesHQ checked Sep 15, 2026	501-1,000	409 contacts →
	Indirect evidence “Imperative Chemical Partners is the largest privately held oilfield chemical services company in North America.” Source: RevenueBase Database · checked Sep 15, 2026
23	Monument Chemical	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 15, 2026	501-1,000	401 contacts →
	Indirect evidence “Every day, our customers bring us their toughest chemistry challenges.” Source: RevenueBase Database · checked Sep 15, 2026
24	United Refining Company	Indirect evidence	Warren, United StatesHQ checked Sep 15, 2026	1,001-5,000	401 contacts →
	Indirect evidence “United Refining Company is an independent refiner and marketer of petroleum products.” Source: RevenueBase Database · checked Sep 15, 2026
25	AMSTY	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 15, 2026	201-500	396 contacts →
	Indirect evidence “At AmSty, we’re driven by a simple purpose: to create essential, sustainable materials that help build safe communities and support healthy living.” Source: RevenueBase Database · checked Sep 15, 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: petrochemicals companies. 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 petrochemicals companies.
Partial evidence: Its own public description names part of petrochemicals companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petrochemicals companies. 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 690 petrochemicals companies based in the United States

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Petrochemicals companies based in the United States at a glance

As of Sep 15, 2026

32.4%Verified-email coverage

114.4Average contacts per company

11-50Median size (employees)

16.5%Largest-city concentration · Houston

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

228

11-50

230

51-200

110

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 690 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 petrochemicals companies, 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 “petrochemicals companies”. 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 petrochemicals companies), 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 petrochemicals companies, 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, 25,551 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 15, 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.

Petrochemicals companies by metro

Petrochemicals companies in Houston114

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 petrochemicals companies, 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 petrochemicals companies are there based in the United States?

RevenueBase identified 690 petrochemicals companies 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?

Lyondellbasell, headquartered in Houston, tops this list with the largest team on record.

Which city has the most petrochemicals companies?

Houston leads with 114 headquartered companies, followed by The Woodlands (11) and Dallas (10).

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 25,551 verified decision-maker contacts tracked across these 690 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 15, 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.