Historical population Year Pop. ±% 1769 78,274 — 1951 307,635 +293.0% 1960 327,127 +6.3% 1970 350,297 +7.1% 1980 368,942 +5.3% 1990 377,202 +2.2% 2000 389,960 +3.4% 2010 422,102 +8.2% Source: Statistics Norway .