Abstract In this paper, we report detailed study on magnetic behavior of perovskite SrCoO3-δ compound with partial substitution of non-magnetic Nb and magnetic Ru at Co site. All the samples show single-phase nature with tetragonal structure of P4/mmm space group. The semiconducting behavior is evident from temperature dependent resistivity (ρ) measurement. The resistivity exhibits Variable Range Hopping and Small Polaron Hopping mechanisms in different temperature regimes. The magnetoresistance increases with substitution and reaches up to ~35% at 10 K with 70 kOe magnetic field. The samples show weakly ferromagnetic-type transition below room temperature. The saturation magnetization and exchange bias (EB) increase with Nb concentration but the effect is less prominent for Ru substituted samples. Different magnetic properties are explained on the basis of valence states of Nb5+ and mixed valence of Ru4+/5+ replacing Co3+. The existence of ferromagnetic correlated region in antiferromagnetic matrix and irreversible glass state with competing exchange interactions impart the EB effect in these samples. The EB value HEB~7.45 kOe at 10 K is quite significant which might be useful for further technological implementation in electronics/spintronics devices.