Halesworth is a market town, civil parish and electoral ward in north-eastern Suffolk, England. The population stood at 4,726 in the 2011 Census. It lies 15 miles south-west of Lowestoft, on a tributary of the River Blyth, nine miles upstream from Southwold. The town is served by Halesworth railway station on the Ipswich–Lowestoft East Suffolk Line. It is twinned with Bouchain in France and Eitorf in Germany.