Gilliam County's estimated 2026 population is 1,843 with a growth rate of -3.36% in the past year according to the most recent United States census data. Gilliam County is the 35th largest county in Oregon. The 2010 population was 1,880 and has seen a growth of -1.97% since that time.
Data after 2023 is projected based on recent change
The racial composition of Gilliam County includes 84.07% White, and smaller percentages for other race, Native American, Asian and multiracial populations.
White (84.07%)
Two or more races (13.44%)
Other race (1.2%)
Native American (0.9%)
Asian (0.4%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,683 | 84.07% |
| Two or more races | 269 | 13.44% |
| Other race | 24 | 1.2% |
| Native American | 18 | 0.9% |
| Asian | 8 | 0.4% |
Married
Widowed
Divorced
Separated
Never Married
Gilliam County's average per capita income is $49,704. Household income levels show a median of $64,219. The poverty rate stands at 12.63%.
Name | Median | Mean |
|---|---|---|
| Families | $77,734 | $97,002 |
| Married Families | $77,159 | - |
| Households | $64,219 | $77,640 |
| Non Families | $35,192 | $51,664 |
Average Income
Median Household Income
Poverty Rate
