2018 Population Estimates – Gilliam County and Incorporated Cities

by Dallas Fridley

January 28, 2019

Portland State University’s Population Research Center recently released their certified population estimates for Oregon, its counties, and incorporated cities. From July 1, 2017 to July 1, 2018, Gilliam County’s lost 10 residents, falling to 1,985.

Oregon’s population grew by 54,200 residents in 2018 to total 4,195,300, an increase of 1.3 percent. Since 2012, Oregon’s population rose by 311,565 residents, an increase of 8.0 percent or 1.3 percent annually.
Annual population growth in Gilliam County ranged from an increase of 2.4 percent or 45 residents in 2013 to a loss of 0.5 percent or 10 residents in 2018. Since 2012, Gilliam County’s resident population rose by 85, an increase of 4.5 percent or 0.7 percent annually.

The City of Condon led incorporated areas in 2018, rising by five residents to total 690. The City of Arlington held steady with 610 residents. Likewise, the City of Lonerock held its own with 20 residents. Gilliam County’s unincorporated areas lost 15 residents in 2018, falling to 665 (-2.2%).

The City of Condon represented 35 percent of Gilliam County’s population in 2018, followed by unincorporated areas with 33 percent. The City of Arlington hosted 31 percent of Gilliam County’s residents while the City of Lonerock held a 1 percent share.
Since 2012, unincorporated areas rose by 65 residents, representing about 77 percent of Gilliam County’s total population increase. The City of Arlington claimed 29 percent of Gilliam County’s population growth since 2012, rising by 25 residents, while the City of Condon lost five residents and the City of Lonerock held steady.


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