Thermal and electrical properties of alumina (Al2O3) coating produced via atmospheric plasma spraying (APS) was investigated in this research work. Formation of layered microstructure, which contains splats and pores, was experimentally observed. Splats as building blocks of the coating had average transverse size of about 3±0.5 pm. X-ray diffraction revealed that feedstock powder contained pure α-Al2O3, while deposited alumina coating was a mixture of α-Al2O3 and γ-Al2O3 phases. The measured hardness of the coating was 783±55 Hv, which was reasonably high despite the porosity level of 10±2 %. The electrical properties were measured using the pseudo two-contact impedance spectroscopy method that allowed separating the electrical resistivity of splats and their boundaries within coating microstructure. The obtained results showed significant difference between these two types of elements with the resistivity of splats being 5 times smaller than that of the splat boundaries. Finally, the measurements of thermal conductivity gave value of 3.3±0.8 W/m·K, which indicated a good agreement between experimental, analytical and numerical models.