BISMARCK, N.D. — The U.S. Census Bureau says North Dakota’s population shrank slightly over the last year after several years of growth.

According to a census estimate released Wednesday, North Dakota was among a handful of states that lost population. As of July 1, North Dakota’s population was estimated at 755,393, down 155 from a revised estimate of 755,548 the same time a year ago.

North Dakota’s estimated population has grown since the 2010 Census pegged it at more at 672,000. The state’s population grew as the Bakken oil boom peaked.

According to North Dakota Census Office manager Kevin Iverson, figures suggest some young adults who moved into the state have left.

North Dakota’s population is still near an all-time high, and has grown by an estimated 83,000 residents since the 2010 census.