There are 3 cities in Gilliam County, Oregon.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Condon1Oregon714719-0.14%8750.82
Arlington2Oregon6376330.16%2502.55
Lonerock3Oregon26234%251.03
showing: 3 rows

Cities in Gilliam County, Oregon by Population (2024)

What is the largest city in Gilliam County, Oregon?

Condon is the largest city in Gilliam County.

What is the smallest city in Gilliam County, Oregon?

Lonerock is the smallest city in Gilliam County.

How many cities are in Gilliam County?

There are 3 cities in Gilliam County, Oregon.

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