Bernalillo County (N.M.)

With the occupation of New Mexico in 1846 by the United States, seven political subdivisions established by Mexico in 1844 were recognized as counties under the Kearny Code of Laws. Bernalillo County was one of these original seven counties. New Mexico remained under a military form of government until Sept. 9, 1850, when an act of Congress established the Territory of New Mexico. On Jan. 9, 1852, the boundaries of the counties were fixed by an act of the Territorial Legislative Assembly. Bernalillo County, New Mexico was created in 1852.

From the guide to the Bernalillo County, N.M. Records, 1849-1927 (Bulk 1849-1900), (New Mexico State Records Center and Archives)