County outline
Where LaMoure County is located
Area breakdown
Land accounts for 99.6% of LaMoure County’s measured area and water for 0.4%. Its combined area converts to 2,981 square kilometers or approximately 736,612 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,146.005 | 2,968.139 | 733,443.2 |
| Water | 4.952 | 12.826 | 3,169.3 |
| Total | 1,150.957 | 2,980.965 | 736,612.5 |
How LaMoure County compares
By original Census land area, LaMoure County ranks #29 of 53 in North Dakota and #540 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.986 times the North Dakota county-equivalent median of 1,161.8 square miles. It accounts for 1.7% of the combined county land area in the state.
See the complete North Dakota ranking · What counts as a county equivalent?
Population and density of LaMoure County
The Census Bureau estimates that 4,135 people lived in LaMoure County on July 1, 2025. That ranks #2,952 of 3,222 county equivalents nationally and #25 of 53 in North Dakota. Since the April 1, 2020 estimates base of 4,086, the population has grown by 49 (+1.2%), compared with +2.6% for North Dakota as a whole.
With 1,146 square miles of land, that is 3.6 people per square mile (1.4 per km²), placing LaMoure County #2,938 nationally for density and #28 in North Dakota. The median county equivalent has 47 people per square mile; the North Dakota median is 3.7. Put another way, there are about 177 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 4,095 | 4,054 | 4,065 | 4,083 | 4,067 | 4,135 |
| Change | — | −41 | +11 | +18 | −16 | +68 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in LaMoure County
8 incorporated places lie at least partly in LaMoure County. Together they are home to 2,053 people (49.6%); the other 2,082 (50.4%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is LaMoure city, with 758 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| LaMoure cityCounty seat | 758 | −0.5% | 1.343 |
| Edgeley city | 584 | +1.4% | 0.746 |
| Kulm city | 372 | +1.1% | 0.382 |
| Marion city | 128 | +3.2% | 0.838 |
| Jud city | 66 | +1.5% | 0.243 |
| Verona city | 62 | +1.6% | 0.575 |
| Dickey city | 50 | +8.7% | 0.239 |
| Berlin city | 33 | +3.1% | 0.096 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside LaMoure County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
LaMoure County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
12 ZIP Code Tabulation Areas have land in LaMoure County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.
580495841558431584335845458456584585846158466584725847458490
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering LaMoure County
LaMoure County shares a land border with 6 county equivalents. It has more land than 4 of them. The largest neighbor is Stutsman County (2,221.9 mi²) and the smallest is Ransom County (862.5 mi²). Together with its neighbors, LaMoure County forms a block of 8,820.6 mi² of land, of which it holds 13%.
| Bordering county equivalent | Land mi² | Size vs. LaMoure | Compare |
|---|---|---|---|
| Stutsman County | 2,221.9 | 1.9× larger | Compare |
| Barnes County | 1,491.6 | 1.3× larger | Compare |
| Dickey County | 1,131.5 | about the same | Compare |
| Logan County | 992.6 | 1.2× smaller | Compare |
| McIntosh County | 974.6 | 1.2× smaller | Compare |
| Ransom County | 862.5 | 1.3× smaller | Compare |
How big is LaMoure County compared with U.S. states?
LaMoure County has more land than 1 of the 50 states. It is about 1.1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.7 times as much land (1,948.6 mi²). North Dakota’s county land could hold about 60 areas the size of LaMoure County.
Another way to picture it: the same land area would fill a square about 33.9 miles (54.5 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about LaMoure County?
LaMoure County has more land than 2,682 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places LaMoure County at #624 nationally by total area, 84 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0.4%, compared with a national county-equivalent median of 1.2% — 0.7 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside LaMoure County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #539 | Bradford County, Pennsylvania | 1,147.4 | Compare |
| #540 | LaMoure County, North Dakota | 1,146 | This county |
| #541 | Clearfield County, Pennsylvania | 1,144.9 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 46.464195, -98.526057. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 2,968,139,573 m²; AWATER: 12,824,670 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is LaMoure County?
LaMoure County, North Dakota has 1,146 square miles (2,968.1 km²) of land and 4.952 square miles of water, for a total area of 1,151 square miles. It ranks #540 of 3,222 U.S. county equivalents by land area.
Is LaMoure County the largest county in North Dakota?
No. LaMoure County ranks #29 of 53 in North Dakota by land area. The largest is McKenzie County, with 2,760.1 square miles of land.
What counties border LaMoure County?
LaMoure County shares a land border with Dickey County, Stutsman County, Logan County, Ransom County, Barnes County, and McIntosh County.
What is the population of LaMoure County?
The Census Bureau estimates LaMoure County had 4,135 residents on July 1, 2025, ranking #2,952 of 3,222 county equivalents. That is 3.6 people per square mile of land.
What is the county seat of LaMoure County?
The county seat of LaMoure County is LaMoure.
What cities and towns are in LaMoure County?
LaMoure County has 8 incorporated places. The most populous five are LaMoure city, Edgeley city, Kulm city, Marion city, and Jud city; 2,082 residents live outside any incorporated place.
Is LaMoure County part of a metropolitan area?
No. LaMoure County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in LaMoure County?
12 ZIP Code Tabulation Areas have land in LaMoure County, and 7 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does LaMoure County compare with U.S. states?
It has more land than 1 of the 50 states, including Rhode Island (1,033.9 square miles of land).
How many acres of land are in LaMoure County?
The land measurement converts to approximately 733,443 acres. Including water, total area is approximately 736,612 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.