U.S. imports of Gypsum & Anhydrite (HS 252010) totaled $9.1M in August 2026, imported from 16 countries.
Importers of Gypsum & Anhydrite paid $505K in duties in August 2026, an average duty rate of 5.57% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataNatural gypsum (calcium sulfate dihydrate) and anhydrite (anhydrous calcium sulfate) are foundational minerals for the construction and building products industries, classified under tariff line 2520100000. Mexico is the leading US supplier, a position reinforced by large Baja California deposits and short overland and maritime shipping distances to US wallboard manufacturers. Canada and Spain are secondary sources. Importers should distinguish natural gypsum from synthetic gypsum (a byproduct of flue-gas desulfurization), as synthetic material may classify differently depending on its form and processing state.
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46 import shipments a month
Natural gypsum and anhydrite are minerals of geological origin and classify under 2520100000. Synthetic gypsum — produced as a byproduct of industrial processes such as flue-gas desulfurization or phosphoric acid production — is generally classified elsewhere (often in Chapter 28 or 38 depending on its form and purity). The origin of the calcium sulfate (geological versus industrial byproduct) is the key classification question, and a chemical analysis certificate can support the correct determination.
Wallboard (drywall) manufacturing is the dominant end use, consuming the largest share of imported gypsum. Cement production uses gypsum as a set-retarder additive. Agricultural applications include soil amendment to improve drainage and reduce sodium content. Anhydrite specifically is used in flooring screeds and as a binder in specialty construction products.
ImportsExports
Imports
$9.1MYoY · free account
Exports
$2.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $110.0M of Gypsum & Anhydrite and exported $15.4M.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2520100000 | Gypsum; Anhydrite | $9.1M | 5.57% | 55.02% | $505K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2520100000 | Gypsum; Anhydrite | $2.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Subheading 1 of 2 in heading 2520
Subheading 252010 · $9.1M of $9.5M
Imports · August 2026
origin
Spain and Mexico together supply 68% of it. China pays 25.0% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
45.0% enters free of duty; duty collected equals 5.57% of imports for consumption.