County Maps US

Morton County, North Dakota

A county in North Dakota, ranked 6 of 53 by population.

CountyFIPS 38059

Within North Dakota
Morton County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Mandan, the county seat, located via the 2025 Census Gazetteer.

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Population
34,601
+1,277 (+3.8%) since 2020
Land area
1,926
square miles. A further 1.0% of the total area is water
Population density
18.0
people per square mile, computed rather than published
County seat
Mandan
Seat of county government.
Established
1873
152 years ago
Largest city
Mandan city
Population 25,061.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Morton County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Morton County, North Dakota from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 554 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Morton County ranks

Position among the 53 counties of North Dakota, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn North DakotaNationally
Population34,6016th of 531,322nd of 3,144
Land area1,926 sq mi7th of 53295th of 3,144
Population density18.0 per sq mi7th of 532,306th of 3,144
Median household income$79,38217th of 53610th of 3,143

Full data for Morton County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population34,601Vintage 2025 Population Estimates
Population in 202033,324Vintage 2025 Population Estimates
2020 estimates base?33,291Vintage 2025 Population Estimates
Land area1,926 sq mi2025 Gazetteer Files
Water area19.3 sq mi2025 Gazetteer Files
Total area1,945 sq mi2025 Gazetteer Files
Population density?18.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$79,382American Community Survey 2020-2024 5-Year Estimates
Median home value$263,900American Community Survey 2020-2024 5-Year Estimates
Median age37.6American Community Survey 2020-2024 5-Year Estimates
Households13,946American Community Survey 2020-2024 5-Year Estimates
Housing units15,465American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+79
434 births, 355 deaths
Net migration
+261
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 7 areas bordering Morton County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Grant CountyNorth Dakota81 mi2,206
Sioux CountyNorth Dakota44 mi3,667
Oliver CountyNorth Dakota39 mi1,898
Burleigh CountyNorth Dakota39 mi103,251
Emmons CountyNorth Dakota20 mi3,215
Stark CountyNorth Dakota18 mi34,013
Mercer CountyNorth Dakota16 mi8,441

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 53 counties of North Dakota

Open the interactive North Dakota county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.