Oliver County, North Dakota Demographics 2026

Population Overview

Oliver County is located in North Dakota with a total population of 1,821. It is the 48th most populous county out of 53 in North Dakota. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Oliver County is 46.1 years. This is 29% higher than the state median of 35.7 years.

Economy, Income & Housing

The median household income in Oliver County is $76,953. This is 1% higher than the state median of $75,949. It is also 2% lower than the national median of $78,538. The poverty rate stands at 4.7%. This is 55% lower than the state poverty rate of 10.6%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.9%. This is 67% lower than the state rate of 2.8%. The median home value is $217,000. Housing costs are 10% lower than the state median of $241,100. With a home-value-to-income ratio of just 2.8x, Oliver County is one of the most affordable housing markets in the area. 93.4% of occupied housing units are owner-occupied. This homeownership rate is 47% higher than the state average of 63.4%.

Race & Ethnicity

Oliver County has a predominantly White (non-Hispanic) population, comprising 91.9% of all residents. Hispanic or Latino residents account for 3.0%.

Education

20.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% lower than the state rate of 32.3%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.6%.

Data Sources & Methodology

All figures for Oliver County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against North Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.