Horten, Norway kommune Municipality Coat of arms Vestfold within Norway Coordinates: 59°25′15″N 10°25′58″E﻿ / ﻿59.42083°N 10.43278°E﻿ / 59.42083; 10.43278Coordinates: 59°25′15″N 10°25′58″E﻿ / ﻿59.42083°N 10.43278°E﻿ / 59.42083; 10.43278 Country Norway County Vestfold Administrative centre Horten Government • Mayor (2015) Are Karlsen (Arbeiderpartiet) Area • Total 70 km2 (30 sq mi) • Land 68 km2 (26 sq mi) Area rank 407 in Norway Population (2016) • Total 27,178 [1] • Rank 34 in Norway • Density 361/km2 (930/sq mi) • Change (10 years) 8.2 % Demonym(s) Hortenser Hortensar[2] Time zone CET (UTC+1) • Summer (DST) CEST (UTC+2) ISO 3166 code NO-0701 Official language form Bokmål Website www.horten.kommune.no Data from Statistics Norway