Hunt & Live

Petroleum County, MT

524 residents · 1,656 sq mi · 0.3/sq mi · 100% rural

Climate
46.2°F
14.3" rain/yr
Water
dry sub-humid
Aridity index 0.71
Hardiness
Zone 7a
Winter low ~1.5°F

About Petroleum County

Petroleum County is a county in the U.S. state of Montana. As of the 2020 census, the population was 496, making it the least populous county in Montana and the eighth-least populous in the United States. Its county seat is Winnett. The county's area was partitioned from Fergus County in 1925 to become the last of Montana's 56 counties to be organized.

77
Prepper Suitability
worsebetter
National rank: #295 of 3,109
Locator map
Location within the continental US

Prepper Assessment

Living in this area offers a unique experience characterized by its vast, rural landscape and low population density of just 0.3 people per square mile. The climate is classified as USDA zone 7a, with an annual mean temperature of 46.2°F and a growing season that allows for various crops. However, the region receives only 14.3 inches of rainfall annually, which may challenge self-sufficient gardening and farming efforts. Water availability is a concern, as the area is classified as dry sub-humid, limiting agricultural potential.

Petroleum County faces specific risks, with notable hazards including lightning (FEMA rank 70) and wildfire (FEMA rank 66), which could impact safety and land management. The cold wave risk (FEMA rank 32) may also pose challenges during winter months. Despite having a low violence percentile of 92, indicating a safer environment, the remote location may lead to difficulties accessing services and resources. Additionally, while the median home price is relatively affordable at $152,600, the economic landscape may not support diverse employment opportunities.

This county may suit individuals or families seeking a quiet, remote lifestyle with a focus on self-sufficiency and minimal community interaction. Those with experience in managing agricultural challenges in a dry climate may thrive here. However, individuals reliant on urban amenities, consistent healthcare, or those unprepared for the risks posed by wildfires and cold weather may find this area unsuitable. The hidden gem could be the low property tax rate of 0.85%, making it appealing for those looking to invest in rural land.

AI-generated analysis based on county data (climate, hazards, density, housing, economy). For general orientation only.

Key Facts

Top 15% nationally
National prepper rank: #478 of 3,109.
#2 in MT
Top 5 counties in Montana out of 56.
Dominant hazard: lightning
FEMA ranks lightning risk at 70/100 here — the leading natural threat.
Extremely rural
Only 0.3 people per square mile — fewer than 5/sqmi places you in the bottom 5% nationally for density.
Climate profile
Classified as dry sub-humid with a 46.2°F annual mean and 14.3" of annual precipitation. USDA hardiness zone 7a.
Housing & taxes
Median home value $152,600.

Score Breakdown

Violence
68
percentile (lower = safer)
Disasters
1
percentile (lower = safer)
Density
0
percentile (lower = emptier)
Overall FEMA Risk
1.3
NRI composite (0-100)

Natural Hazard Profile (FEMA NRI)

Cold Wave 32
Drought 18
Earthquake 2
Hail 10
Heat Wave 5
Riverine Flood 2
Ice Storm 1
Landslide 14
Lightning 70
Strong Wind 2
Tornado 3
Wildfire 67
Winter Weather 12

Monthly Climate (1991–2020 normals)

Average temperature
JFMAMJ JASOND
Monthly precipitation (inches)
JFMAMJ JASOND
Summer high
86.6°F
Winter low
11.5°F
Heating degree days
7,428
Cooling degree days
591

Housing & Economy

Median home value
$152,600
Median HH income
$57,981
Price to income
2.6×
Property tax rate
0.85%
~$1,298/yr median

Community Profile

Median age
49.6
Homeownership
70.4%
Poverty rate
6.2%
Unemployment
0.8%

Connectivity

Broadband households
70.4%
No internet access
10.1%

Explore Petroleum County Further

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Data sources. Prepper scores are national percentile ranks of firearm fatalities (County Health Rankings 2024 / CDC WONDER), FEMA National Risk Index 2023 composite disaster score, and population density (ACS 2022 + TIGER 2022 land area). Climate from NOAA nClimDiv 1991–2020 normals. Hardiness zone is estimated from climate data and may differ from the official USDA PHZM. Demographics and housing from Census ACS 5-year 2022. All scores are for comparison purposes only and do not constitute advice about where to live.