From the Wikipedia page 
Valga County (Estonian: Valga maakond), or Valgamaa is the first-level administrative unit in Estonia and one of 15 counties of Estonia. It comprises the former area of Valga District. The present-day county was created on 1 January 1990. The capital and the biggest town of Valga County is Valga, followed by Tõrva and Otepää. It is situated in southern part of the country and borders Põlva County and Võru County to the east, Latvia to the south and to the west, Viljandi County and Tartu County to the north.