Jury Pool Profile
Columbia County, Washington
- County seat
- Dayton
- Judicial district
- 29th Superior Court District
- Population (July 2025 estimate)
- 4,141
- Census PEP. The five-year ACS survey average is 4,014.
At a glance
Columbia County is a 4,141-person venue. The county population is 83% White (Census race-alone categories). Median household income is $67,904, $31,405 below the WA state median of $99,309; 24.9% of residents 25 and over hold a bachelor's degree or higher. 7.7% of residents 5 and older speak a language other than English at home, most commonly Spanish and Vietnamese. The largest employment sector is Public administration, at 13.8% of covered employment, average pay $61,627/year. Trailing-12-month unemployment is 4.64%, below the 4.99% state average. The county carried the Republican presidential candidate in 2016, 2020, and 2024, taking 69% to 70% of the vote across the three.
- Population
- 4,014
- Median household income
- $71,810
- Unemployment
- 4.6%
Who sits on a jury?
≥70% White (race-alone) and <20% Black. This county: 83% / 1%.
Columbia County has a population of 4,014, with a median age of 49.6. By Census race-alone categories, White residents make up 83.1%; Black residents 0.5%. Independently, 8.3% of residents identify as Hispanic or Latino of any race.
The median household earns $67,904; 24.9% of residents 25 and over hold a bachelor's degree or higher; 12.4% live below the federal poverty line.
Economic context
None of the heuristic anchors fired (oil & gas <5%, healthcare/education <20%, manufacturing <15%). Top sector: Public administration (13.8%).
Public administration is the largest employment sector at 13.8% of covered employment, followed by Trade, transportation & utilities at 12.3%. Trailing-12-month unemployment is 4.64%, below the Washington state average.
Political composition
Republican candidate carried this county in 2016, 2020, and 2024 (avg winning share: 70%). 'Strongly' threshold: ≥60% avg.
Columbia County was carried by the Republican candidate in the 2016, 2020, and 2024 cycles, with 70.2% in 2024, 70.3% in 2020, 68.7% in 2016.
Languages, households, faith & health
Family households are 63% of all households (thresholds: ≥70% = 'family-dominant'; 50–70% = 'family-majority'; <50% = 'singles/nonfamily-majority'). 7.7% of residents 5 and older speak a language other than English at home (threshold for 'linguistically diverse' is ≥10%).
7.7% of residents 5 years and older speak a language other than English at home. The most common are Spanish, Vietnamese, German or other West Germanic. Veterans account for 11.6% of the adult civilian population (381 individuals).