We report a systematic investigation on crystal structure, microstructure, and microwave dielectric properties of (Mg1-xCox)TiO3 (x=0-0.07) ceramics prepared by semialkoxide precursor method. All the as-made samples exhibit an ilmenite structure with an incredible reduction in sintering temperature from 1350 degrees C to 1200 degrees C. Lattice parameter increases with increasing Co content due to the larger ionic radius of Co2+ as compared to Mg2+. The relative density, dielectric constant, and Qxf(0) values increase with increasing Co up to 0.05 and decreases for x>0.05. This is attributed to local lattice distortion, maximum relative density, and uniform grain growth. Qxf(0) values were enhanced from 126THz for x=0 to a maximum value 170THz for x=0.05. A best combination of microwave dielectric properties (epsilon(r)similar to 17.03, Qxf(0)similar to 170THz @ 9.4GHz and (f) of -40ppm/degrees C) was obtained for (Mg0.95Co0.05)TiO3 ceramic sintered at 1200 degrees C for 3h. The observed results reveal (Mg0.95Co0.05)TiO3 ceramic as one of the promising dielectric materials for low-loss and millimeter-microwave applications.