We have correlated sunspot number (Rz) with geomagnetic Ap and Kp indices for the period 2006 to 2011, and shown to be positively correlated with coefficient of correlation for sunspot no. vs. geomagnetic disturbance index Ap (r = 0.3528) and for sunspot no. vs. geomagnetic activity index Kp (r = 0.3131), and we have concluded that, if number of sunspots increases then there will be an increase in the value of geomagnetic Ap and Kp indices, i.e. geomagnetic disturbance level will be increased, and If number of sunspots decreases then the value of geomagnetic Ap & Kp indices also decreases, and geomagnetic disturbance level will be decreased.