This paper characterises S-SO₄ concentration in the surface (0-20 cm) layers of the agricultural soils in Poland (45242 soil samples) and in the Lublin region (3648 soil samples). Mineral soils in Poland contain, on average, 1.79 mg of S-SO₄/100 g of soil. In the Lublin region, it is 1.65 of S-SO₄/100 g of soil. In the whole of the country, 83.2% of the agricultural soils have natural (0⁰+1⁰) levels of S-SO⁴; this includes the areas with very low (0⁰) concentrations (58.1% of the agricultural land) as well as elevated (1⁰) concentrations (25.1% of the agricultural land). Soils polluted with sulphur (2⁰+3⁰) make up 16.8% of the agricultural land. This includes weak (2⁰) and heavy (3⁰) pollution – 13.1 and 3.7%, respectively. In the Lublin region, 88.5% of the agricultural soils have natural (0⁰+1⁰) levels of S-SO₄. This includes the areas with low (0⁰) concentration (64% of the agricultural land) as well as the areas with elevated (1⁰) concentration (24.5% of the agricultural land). Soils polluted with sulphur (2⁰+3⁰) make up 11.5% of the agricultural land, including weakly (2⁰) polluted soils (8.7%) and heavily polluted (3⁰) soils (2.8%).