The CuZn mixed ferrites viz. Cu_1-xZn_xFe₂O₄(x = 0, 0.25, 0.50, 0.75 and 1.0) were synthesized by the oxalate co-precipitation method. Formation of the cubic ferrite phase was confirmed by X-ray diffraction studies. Microstructural and compositional features were studied by scanning electron microscopy and energy dispersive X-ray analysis technique. Magnetic properties were measured by B-H hystersis loop tracer technique. The variation of saturation magnetization, remanent magnetization and coercivity were studied as a function of zinc content. The substitution of zinc ions plays decisive role in changing structural and magnetic properties of copper ferrite.