Voltaire is a city in McHenry County, North Dakota, home to about 43 people across 0.5 square miles. It has no ZIP code of its own: it’s part of 58792.
Population4388 per sq mi
Median home value$211,400Census, as estimated by owners
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Population over time
Voltaire had 46 residents in the 2020 census, down 10% since 2000.
It’s the 314th largest of 402 towns in North Dakota by population.
McHenry County grew from 5,253 residents in 1900 to 5,345 in 2020.
McHenry County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Weather by month
Average highs peak around 80°F in summer, and winter lows average -3°F. About 19.3 inches of rain and melted snow fall in a typical year, with about 41 inches of snow.
Source: NOAA 1991–2020 climate normals, Velva, ND weather station (8 miles away).
Jobs in McHenry County
740 jobs at 141 businesses in McHenry County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Health care
Nearest hospitals
Trinity HospitalsGeneral hospital · emergency room · CMS rating 3 of 5 · Minot28.3 miles
Chi St. Alexius Health Turtle LakeCritical access hospital · emergency room · Turtle Lake32.6 miles
Garrison Memorial HospitalCritical access hospital · emergency room · Garrison36.7 miles
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.