Oregon Historical County Records Guide
Umatilla County Records Inventory
Series documents the population, property, and agricultural production of the county. Records may include census rolls and abstracts, farm schedules, abstract of assessment and census, enumeration of inhabitants and industrial products, and enumeration of inhabitants and military enrollment. Information includes number of males and females per age category; head of household; name, age, and gender of household members; occupation and relationship of household members to head of household; and description and value of real and personal property. Information may also include nationality, physical description, birthplace, health, and religion of household members and agricultural production statistics.
Records at the Oregon State Archives:
Abstract of Assessment and Census, 1865 (1 volume);
[Agricultural Products Census, Cayuse Post Office], 1870 (1 volume);
Census Records, 1865, 1875, 1885 (3 volumes);
Search for 1865, 1875, and 1885 Umatilla County state census entries in Oregon Historical Records Index.
Records at the Umatilla County Courthouse, Records Office Research Room:
List of Persons [Census Record], 1880 (1 volume).