Jury Pool Profile
Petroleum County, Montana
- County seat
- Winnett
- Judicial district
- 10th Judicial District Court
- Population (July 2025 estimate)
- 548
- Census PEP. The five-year ACS survey average is 447.
At a glance
Petroleum County is a 548-person venue. The county population is 99% White (Census race-alone categories). Median household income is $56,394, $19,126 below the MT state median of $75,520; 30.8% of residents 25 and over hold a bachelor's degree or higher. The largest employment sector is Education & health services, at 27.9% of covered employment, average pay $33,303/year. Trailing-12-month unemployment is 4.75%, above the 3.48% state average. The county carried the Republican presidential candidate in 2016, 2020, and 2024, taking 85% to 88% of the vote across the three.
- Population
- 447
- Median household income
- $60,208
- Unemployment
- 4.8%
Who sits on a jury?
≥70% White (race-alone) and <20% Black. This county: 99% / 0%.
Petroleum County has a population of 447, with a median age of 51.6. By Census race-alone categories, White residents make up 98.9%; Black residents 0.0%.
The median household earns $56,394; 30.8% of residents 25 and over hold a bachelor's degree or higher; 14.5% live below the federal poverty line.
Economic context
BLS QCEW 'Education & health services' is ≥20% of total covered employment. This county: 27.9%.
Education & health services is the largest employment sector at 27.9% of covered employment, followed by Public administration at 24.0%. Trailing-12-month unemployment is 4.75%, above the Montana state average.
Political composition
Republican candidate carried this county in 2016, 2020, and 2024 (avg winning share: 86%). 'Strongly' threshold: ≥60% avg.
Petroleum County was carried by the Republican candidate in the 2016, 2020, and 2024 cycles, with 87.7% in 2024, 84.9% in 2020, 86.5% in 2016.
Languages, households, faith & health
Family households are 62% of all households (thresholds: ≥70% = 'family-dominant'; 50–70% = 'family-majority'; <50% = 'singles/nonfamily-majority'). 0.0% of residents 5 and older speak a language other than English at home (threshold for 'linguistically diverse' is ≥10%).
0.0% of residents 5 years and older speak a language other than English at home. Veterans account for 16.3% of the adult civilian population (62 individuals).