IDAHO MAPS SERIES:

The 1880 census shows an increase in its population (statically). However, only three new counties had been enumerated beyond the others that’s already in place, and these three counties were in general smaller area geographically compare to Owyhee and Oneida counties had been. The only issue in this page is that the original map (left side) that was created by the former state coordinator to include Bear Lake County which should have been in the corner of the map. Another area that was lost to Idaho, as well as Montana and Wyoming was the new national park created in 1872.

A national park? On March 1, 1872, U.S. Congress passed an act to create the Yellowstone National Park located in the northeast corners of Idaho, uniquely, President Ulysses S. Grant signed this act. Since Oneida County was a vast county on the eastern side of the territory, and its loss had, perhaps, severed a portion of its population to the Wyoming Territory in their counties: Uinta and/or Sweetwater.

In 1880 and forward any census enumeration taken in the Idaho portion of the national park was reported with the Wyoming portion. In 1930, it showed its population as 1 person, by 1940-60 no population, and by 1970-90 it was included in the Fremont County enumeration.

The U.S. Census Bureau showed in this census that the territory's population was at 32,610. Sometimes it is difficult to locate one’s ancestor in this decadal enumeration, but researchers often forget to peruse other schedules that were created at the same time. The Idaho Historical Society transcribed the following schedules:

1880 Agricultural, Industrial, Mortality Schedules

And for those who don’t have access paid sites that have the census schedules or even the other above schedules, the Idaho State University (ISU) created this project in the 1970s to add online in recent years:

1880 U.S. Census, Idaho by County