We have studied mechanical characteristics of soils of Syktyvkar of the same genesis and different land use: agrosoddy–podzolic urban-stratified soil within the city, park postagrozem, and suburban podzolic soil. Their relationship with the organic-matter content and particle-size composition is analyzed. Strength properties are mainly related to the content of coarse fractions (>0.25 mm) in agrosoddy–podzolic urban-stratified soil and to the organic matter content in podzolic soil. Soils are arranged in sequences according to rheological parameters. The strength of structural bonds estimated by the parameter of initial elasticity modulus is the greatest in podzolic soil, and horizons of agrosoddy–podzolic urban-stratified soil are characterized by a wide range of linear viscoelastic status. The starting point of the viscous flow region is the same for postagrozem and podzolic soil.