United States was the largest of Westlake Corp’s 9 reported lines in fiscal 2025, at $7.95B — 71% of $11.17B.
| Geography | FY 2009 | FY 2010 | FY 2011 | FY 2012 | FY 2013 | FY 2014 | FY 2015 | FY 2016 | FY 2017 | FY 2018 | FY 2019 | FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| United States | $10.90B | $8.96B | $8.75B | $7.95B | |||||||||||||
| Other | $1.75B | $1.26B | $1.20B | $1.08B | |||||||||||||
| Other Foreign Countries | — | — | — | — | |||||||||||||
| Canada | $1.05B | $808.00M | $792.00M | $777.00M | |||||||||||||
| Germany | $875.00M | $602.00M | $594.00M | $583.00M | |||||||||||||
| Foreign | — | — | — | — | |||||||||||||
| Mexico | $228.00M | $217.00M | $206.00M | $194.00M | |||||||||||||
| China | $262.00M | $220.00M | $195.00M | $162.00M | |||||||||||||
| Brazil | $353.00M | $215.00M | $142.00M | $153.00M | |||||||||||||
| Italy | $200.00M | $135.00M | $145.00M | $144.00M | |||||||||||||
| Taiwan | — | — | — | — | |||||||||||||
| Taiwan, Province Of China | — | — | — | — | |||||||||||||
| France | $172.00M | $138.00M | $120.00M | $125.00M | |||||||||||||
| Switzerland | — | — | — | — | |||||||||||||
| Belgium | — | — | — | — | |||||||||||||
| Total | $15.79B | $12.55B | $12.14B | $11.17B |
In fiscal 2025, which ended December 31, 2025, the 9 regions Westlake Corp reported in this breakdown added up to $11.17B. That was down 8.0% from $12.14B in fiscal 2024. United States was the largest region, at $7.95B or 71.2% of the total, followed by Other ($1.08B, 9.7%) and Canada ($777.00M, 7.0%). Together, the two largest regions made up 80.9% of this total.
Compared with fiscal 2024, every sizeable region reported in both years shrank. Germany held up best, down 1.9% to $583.00M, while Other fell the most, down 9.9% to $1.08B. Over fiscal 2022 to 2025, revenue across these regions went from $15.79B to $11.17B, a compound annual decline of 10.9%. United States' share of the total rose from 69.0% to 71.2% over the same years.
The table also keeps 6 regions that Westlake Corp no longer reports, so earlier years can still be read on their original basis; use "Show 6 discontinued" beneath the table to see them. This breakdown covers every fiscal year from 2009 to 2025, as reported in Westlake Corp's annual filings.
Performance Materials was the largest of Westlake Corp’s 4 reported lines in fiscal 2025, at $4.02B — 36% of $11.17B.
| Segment | FY 2009 | FY 2010 | FY 2011 | FY 2012 | FY 2013 | FY 2014 | FY 2015 | FY 2016 | FY 2017 | FY 2018 | FY 2019 | FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Performance Materials | $6.96B | $4.66B | $4.63B | $4.02B | |||||||||||||
| Essential Materials | $4.04B | $3.68B | $3.20B | $3.00B | |||||||||||||
| Housing Products | $3.86B | $3.49B | $3.64B | $3.51B | |||||||||||||
| Pvc, Caustic Soda & Other | — | — | — | — | |||||||||||||
| Polyethylene | — | — | — | — | |||||||||||||
| Building Products | — | — | — | — | |||||||||||||
| Styrene, Feedstock & Other | — | — | — | — | |||||||||||||
| Ethylene, Styrene & Other | — | — | — | — | |||||||||||||
| Infrastructure Products | $922.00M | $718.00M | $673.00M | $635.00M | |||||||||||||
| Total | $15.79B | $12.55B | $12.14B | $11.17B |
In fiscal 2025, which ended December 31, 2025, the 4 segments Westlake Corp reported in this breakdown added up to $11.17B. That was down 8.0% from $12.14B in fiscal 2024. Performance Materials was the largest segment, at $4.02B or 36.0% of the total, followed by Housing Products ($3.51B, 31.5%) and Essential Materials ($3.00B, 26.9%). Together, the two largest segments made up 67.4% of this total.
Compared with fiscal 2024, every sizeable segment reported in both years shrank. Housing Products held up best, down 3.6% to $3.51B, while Performance Materials fell the most, down 13.1% to $4.02B. Over fiscal 2022 to 2025, revenue across these segments went from $15.79B to $11.17B, a compound annual decline of 10.9%. Performance Materials' share of the total fell from 44.1% to 36.0% over the same years.
The table also keeps 5 segments that Westlake Corp no longer reports, so earlier years can still be read on their original basis; use "Show 5 discontinued" beneath the table to see them. This breakdown covers every fiscal year from 2009 to 2025, as reported in Westlake Corp's annual filings.
Performance & Essential Materials was the largest of Westlake Corp’s 2 reported lines in fiscal 2025, at $4.02B — 53% of $7.53B.
| Statement Business Segments | FY 2009 | FY 2010 | FY 2011 | FY 2012 | FY 2013 | FY 2014 | FY 2015 | FY 2016 | FY 2017 | FY 2018 | FY 2019 | FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Performance & Essential Materials | $6.96B | $3.68B | $3.20B | $4.02B | |||||||||||||
| Housing & Infrastructure Products | $3.86B | $4.21B | $4.32B | $3.51B | |||||||||||||
| Vinyls | — | — | — | — | |||||||||||||
| Olefins | — | — | — | — | |||||||||||||
| Total | $10.83B | $7.89B | $7.52B | $7.53B |
In fiscal 2025, which ended December 31, 2025, the 2 segments Westlake Corp reported in this breakdown added up to $7.53B. That is less than the $11.17B in its breakdown by region, so these segments do not account for all of its revenue that year. Performance & Essential Materials was the largest segment, at $4.02B or 53.4% of the total, followed by Housing & Infrastructure Products ($3.51B, 46.6%).
Compared with fiscal 2024, Performance & Essential Materials grew the fastest, rising 25.6% to $4.02B. Housing & Infrastructure Products fell the most, down 18.6% to $3.51B.
The table also keeps 2 segments that Westlake Corp no longer reports, so earlier years can still be read on their original basis; use "Show 2 discontinued" beneath the table to see them. This breakdown covers every fiscal year from 2009 to 2025, as reported in Westlake Corp's annual filings.
Westlake Corp (WLK) breaks its revenue down by region and segment. In fiscal 2025, its largest region was United States, with $7.95B or 71.2% of the total, followed by Other at $1.08B (9.7%).
United States was Westlake Corp's largest region in fiscal 2025, with $7.95B in revenue, 71.2% of the $11.17B reported across its 9 regions.
Performance Materials was Westlake Corp's largest segment in fiscal 2025, with $4.02B in revenue, 36.0% of the $11.17B reported across its 4 segments.
Of the Westlake Corp segments reported in both fiscal 2024 and fiscal 2025, and making up at least 2% of the total, Performance & Essential Materials grew the fastest, rising 25.6% from $3.20B to $4.02B.
Every figure is taken from Westlake Corp's annual financial filings and shown as reported: each line keeps the name the company gives it, years follow its own fiscal calendar, and lines it has stopped reporting stay in the table for the years they were reported.
The breakdown by region covers fiscal 2009 to 2025. The latest four fiscal years are free to view, and the full history is available with a Business Quant subscription.