Eddy County area

Eddy County, North Dakota covers 644.1 square miles: 630.2 square miles of land and 13.9 square miles of water. Its county seat is New Rockford. An estimated 2,329 people lived there in 2025.

Official Census measurements · GEOID 380272026 Gazetteer · retrieved September 27, 2026
Land area630.2 mi²
Water area13.9 mi²
Population (2025)2,329
People per mi²3.7

County outline

Generalized outline of Eddy County, North Dakota
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Eddy County is located

Eddy County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 97.8% of Eddy County’s measured area and water for 2.2%. Its combined area converts to 1,668.3 square kilometers or approximately 412,252 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land630.2391,632.312403,353
Water13.90536.0148,899.2
Total644.1441,668.325412,252.2

How Eddy County compares

By original Census land area, Eddy County ranks #53 of 53 in North Dakota and #1524 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.542 times the North Dakota county-equivalent median of 1,161.8 square miles. It accounts for 0.9% 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 Eddy County

The Census Bureau estimates that 2,329 people lived in Eddy County on July 1, 2025. That ranks #3,092 of 3,222 county equivalents nationally and #40 of 53 in North Dakota. Since the April 1, 2020 estimates base of 2,344, the population has declined by 15 (−0.6%), compared with +2.6% for North Dakota as a whole.

With 630.2 square miles of land, that is 3.7 people per square mile (1.4 per km²), placing Eddy County #2,931 nationally for density and #27 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 173 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate2,3262,3202,3142,2902,3302,329
Change—−6−6−24+40−1

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 Eddy County

2 incorporated places lie at least partly in Eddy County. Together they are home to 1,526 people (65.5%); the other 803 (34.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is New Rockford city, with 1,342 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
New Rockford cityCounty seat1,342−1%1.718
Sheyenne city1840%0.15

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Eddy County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Eddy 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

7 ZIP Code Tabulation Areas have land in Eddy County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

58356583745838058381584215844558464

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 Eddy County

Eddy County shares a land border with 5 county equivalents. Each of them has more land than Eddy County. The largest neighbor is Benson County (1,388.6 mi²) and the smallest is Foster County (634.1 mi²). Together with its neighbors, Eddy County forms a block of 5,613.9 mi² of land, of which it holds 11.2%.

Map of Eddy County and the 5 county equivalents that border it Benson County, North Dakota: 1,388.6 mi² landFoster County, North Dakota: 634.1 mi² landWells County, North Dakota: 1,270.5 mi² landNelson County, North Dakota: 981.8 mi² landGriggs County, North Dakota: 708.7 mi² land
Eddy County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. EddyCompare
Benson County1,388.62.2× largerCompare
Wells County1,270.52× largerCompare
Nelson County981.81.6× largerCompare
Griggs County708.71.1× largerCompare
Foster County634.1about the sameCompare

How big is Eddy County compared with U.S. states?

Eddy County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. North Dakota’s county land could hold about 109 areas the size of Eddy County.

Land area: Eddy County and the closest-sized states
Eddy County630.2 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 25.1 miles (40.4 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 Eddy County?

Eddy County has more land than 1,698 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Eddy County630.2 mi²
North Dakota median1,161.8 mi²
National median604.5 mi²

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 Eddy County at #1,594 nationally by total area, 70 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 2.2%, compared with a national county-equivalent median of 1.2% — 1 percentage points higher. 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 Eddy County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1523Camden County, Georgia630.3Compare
#1524Eddy County, North Dakota630.2This county
#1525Carroll County, Arkansas629.9Compare

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 47.723436, -98.900474. 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: 1,632,310,783 m²; AWATER: 36,012,925 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Eddy County?

Eddy County, North Dakota has 630.2 square miles (1,632.3 km²) of land and 13.9 square miles of water, for a total area of 644.1 square miles. It ranks #1524 of 3,222 U.S. county equivalents by land area.

Is Eddy County the largest county in North Dakota?

No. Eddy County ranks #53 of 53 in North Dakota by land area. The largest is McKenzie County, with 2,760.1 square miles of land.

What counties border Eddy County?

Eddy County shares a land border with Benson County, Foster County, Wells County, Nelson County, and Griggs County.

What is the population of Eddy County?

The Census Bureau estimates Eddy County had 2,329 residents on July 1, 2025, ranking #3,092 of 3,222 county equivalents. That is 3.7 people per square mile of land.

What is the county seat of Eddy County?

The county seat of Eddy County is New Rockford.

What cities and towns are in Eddy County?

Eddy County has 2 incorporated places. The most populous are New Rockford city and Sheyenne city; 803 residents live outside any incorporated place.

Is Eddy County part of a metropolitan area?

No. Eddy County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Eddy County?

7 ZIP Code Tabulation Areas have land in Eddy County, and 4 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Eddy County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1.6 times as much land.

How many acres of land are in Eddy County?

The land measurement converts to approximately 403,353 acres. Including water, total area is approximately 412,252 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.

Cite this county

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