A magnetic carrier comprising: a magnetic substance-dispersed resin carrier core, which contains a magnetic substance and a binding resin, and a coating resin on a surface thereof, wherein: the magnetic substance-dispersed resin carrier core has a resistivity Rk at 1000 V/cm of 5.0 × 10 6 Ω·cm or more and 8.0 × 10 7 Ω·cm or less, the magnetic substance i) has a number average particle diameter of 0.20 μm or more and 0.35 μm or less, as measured in accordance with the description using a scanning electron microscope, and ii) comprises magnetic-substance particles having a shape with vertexes and having a particle diameter of 0.53 μm or more in an amount of 10.0 vol% or more and 32.0 vol% or less based on a total amount of the magnetic substance, as determined in accordance with the description, wherein a particle having a shape with vertexes refers to a particle having a vertex of angle 150° or less in a section of a magnetic-substance particle observed by SEM; and wherein: when analyzing an element in the magnetic substance-dispersed resin carrier core by a fluorescent X-ray analysis and calculating the contents of Fe element and Zn element therein by fundamental parameter quantitative method, i) an Fe 2 O 3 content is 98.00% by mass or more, and ii) a ZnO content is 0.06% by mass or more and 0.50% by mass or less, with respect to the total amount by mass of all the detected elements provided that all the detected elements are assumed to be oxides and the total mass of all oxides is regarded as 100% by mass. a magnetic substance-dispersed resin carrier core, which contains a magnetic substance and a binding resin, and a coating resin on a surface thereof, wherein: the magnetic substance-dispersed resin carrier core has a resistivity Rk at 1000 V/cm of 5.0 × 10 6 Ω·cm or more and 8.0 × 10 7 Ω·cm or less, the magnetic substance i) has a number average particle diameter of 0.20 μm or more and 0.35 μm or less, as measured in accordance with the description using a scanning electron microscope, and ii) comprises magnetic-substance particles having a shape with vertexes and having a particle diameter of 0.53 μm or more in an amount of 10.0 vol% or more and 32.0 vol% or less based on a total amount of the magnetic substance, as determined in accordance with the description, wherein a particle having a shape with vertexes refers to a particle having a vertex of angle 150° or less in a section of a magnetic-substance particle observed by SEM; the magnetic substance-dispersed resin carrier core has a resistivity Rk at 1000 V/cm of 5.0 × 10 6 Ω·cm or more and 8.0 × 10 7 Ω·cm or less, the magnetic substance i) has a number average particle diameter of 0.20 μm or more and 0.35 μm or less, as measured in accordance with the description using a scanning electron microscope, and ii) comprises magnetic-substance particles having a shape with vertexes and having a particle diameter of 0.53 μm or more in an amount of 10.0 vol% or more and 32.0 vol% or less based on a total amount of the magnetic substance, as determined in accordance with the description, wherein a particle having a shape with vertexes refers to a particle having a vertex of angle 150° or less in a section of a magnetic-substance particle observed by SEM; i) has a number average particle diameter of 0.20 μm or more and 0.35 μm or less, as measured in accordance with the description using a scanning electron microscope, and ii) comprises magnetic-substance particles having a shape with vertexes and having a particle diameter of 0.53 μm or more in an amount of 10.0 vol% or more and 32.0 vol% or less based on a total amount of the magnetic substance, as determined in accordance with the description, wherein a particle having a shape with vertexes refers to a particle having a vertex of angle 150° or less in a section of a magnetic-substance particle observed by SEM; and wherein: when analyzing an element in the magnetic substance-dispersed resin carrier core by a fluorescent X-ray analysis and calculating the contents of Fe element and Zn element therein by fundamental parameter quantitative method, i) an Fe 2 O 3 content is 98.00% by mass or more, and ii) a ZnO content is 0.06% by mass or more and 0.50% by mass or less, with respect to the total amount by mass of all the detected elements provided that all the detected elements are assumed to be oxides and the total mass of all oxides is regarded as 100% by mass. when analyzing an element in the magnetic substance-dispersed resin carrier core by a fluorescent X-ray analysis and calculating the contents of Fe element and Zn element therein by fundamental parameter quantitative method, i) an Fe 2 O 3 content is 98.00% by mass or more, and ii) a ZnO content is 0.06% by mass or more and 0.50% by mass or less, i) an Fe 2 O 3 content is 98.00% by mass or more, and ii) a ZnO content is 0.06% by mass or more and 0.50% by mass or less, with respect to the total amount by mass of all the detected elements provided that all the detected elements are assumed to be oxides and the total mass of all oxides is regarded as 100% by mass.