Eddy County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,347. Its county seat is New Rockford.

The Dakota Territory legislature created the county on March 31, 1885, with territory partitioned from Foster County. It was named for Ezra B. Eddy, a Fargo, North Dakota banker who had died a few weeks earlier. The county government was established on April 27, 1885.

The Sheyenne River flows easterly through the upper part of the county. The county terrain consists of semi-arid hills, featuring some agriculture. The terrain slopes to the east and slightly to the north, with its highest point on a hill at the county's southwestern corner, at 1,562 ft (476 m) ASL. The county has a total area of 644 square miles (1,670 km), of which 630 square miles (1,600 km) is land and 14 square miles (36 km) (2.2%) is water. It is the smallest county in North Dakota by area.

• U.S. Highway 281
• North Dakota Highway 15
• North Dakota Highway 20

Eddy County Road 14 is a north-south County Road in North Dakota. It runs from North Dakota Highway 15 near New Rockford to Eddy County Road 9 (1st Ave North) in downtown New Rockford. Eddy County Road 9 is an east-west County Road in North Dakota. It runs from US 281/Highway 15 (1st Street) in New Rockford to Wells County CR 2, near New Rockford.

• Johnson Lake National Wildlife Refuge (part)

Historical population

Census	Pop.	Note	%±
1890	1,377		—
1900	3,330		141.8%
1910	4,800		44.1%
1920	6,493		35.3%
1930	6,346		−2.3%
1940	5,741		−9.5%
1950	5,372		−6.4%
1960	4,936		−8.1%
1970	4,103		−16.9%
1980	3,554		−13.4%
1990	2,951		−17.0%
2000	2,757		−6.6%
2010	2,385		−13.5%
2020	2,347		−1.6%
2022 (est.)	2,314		−1.4%
U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2020

As of the census of 2020, there were 2,347 people.

As of the census of 2010, there were 2,385 people, 1,057 households, and 653 families in the county. The population density was 3.8 inhabitants per square mile (1.5/km). There were 1,323 housing units at an average density of 2.1 units per square mile (0.81/km). The racial makeup of the county was 95.2% white, 2.4% American Indian, 0.3% Asian, 0.2% black or African American, 0.1% Pacific islander, 0.8% from other races, and 1.0% from two or more races. Those of Hispanic or Latino origin made up 2.2% of the population. In terms of ancestry, 52.7% were German, 45.9% were Norwegian, 9.3% were Irish, 6.5% were Swedish, and 1.3% were American.

Of the 1,057 households, 24.2% had children under the age of 18 living with them, 50.9% were married couples living together, 7.4% had a female householder with no husband present, 38.2% were non-families, and 33.9% of all households were made up of individuals. The average household size was 2.18 and the average family size was 2.77. The median age was 49.2 years.

The median income for a household in the county was $38,404 and the median income for a family was $47,857. Males had a median income of $31,887 versus $28,194 for females. The per capita income for the county was $20,302. About 11.5% of families and 15.4% of the population were below the poverty line, including 21.0% of those under age 18 and 21.7% of those age 65 or over.

• New Rockford (county seat)
• Sheyenne

Source:

• Brantford
• Hamar

Eddy County voters tend to vote Republican. In 71% percent of the national elections since 1960, the county selected the Republican Party candidate.

United States presidential election results for Eddy County, North Dakota

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2024	862	71.54%	316	26.22%	27	2.24%
2020	854	67.72%	383	30.37%	24	1.90%
2016	791	64.26%	355	28.84%	85	6.90%
2012	634	54.80%	486	42.01%	37	3.20%
2008	548	47.04%	583	50.04%	34	2.92%
2004	655	54.00%	534	44.02%	24	1.98%
2000	703	55.44%	458	36.12%	107	8.44%
1996	517	40.36%	553	43.17%	211	16.47%
1992	591	36.59%	575	35.60%	449	27.80%
1988	891	53.74%	748	45.11%	19	1.15%
1984	1,049	56.40%	796	42.80%	15	0.81%
1980	1,153	61.23%	539	28.62%	191	10.14%
1976	890	43.33%	1,123	54.67%	41	2.00%
1972	1,022	52.04%	911	46.38%	31	1.58%
1968	1,018	51.10%	893	44.83%	81	4.07%
1964	747	35.78%	1,337	64.03%	4	0.19%
1960	1,188	50.73%	1,152	49.19%	2	0.09%
1956	1,239	56.01%	973	43.99%	0	0.00%
1952	1,534	67.05%	728	31.82%	26	1.14%
1948	952	46.85%	919	45.23%	161	7.92%
1944	974	47.56%	1,042	50.88%	32	1.56%
1940	1,319	48.42%	1,368	50.22%	37	1.36%
1936	579	21.36%	1,729	63.78%	403	14.87%
1932	537	21.25%	1,888	74.71%	102	4.04%
1928	1,071	46.12%	1,240	53.40%	11	0.47%
1924	881	39.33%	101	4.51%	1,258	56.16%
1920	1,525	68.76%	577	26.01%	116	5.23%
1916	505	40.21%	650	51.75%	101	8.04%
1912	199	21.87%	376	41.32%	335	36.81%
1908	540	58.00%	368	39.53%	23	2.47%
1904	596	76.21%	162	20.72%	24	3.07%
1900	455	64.45%	235	33.29%	16	2.27%

• National Register of Historic Places listings in Eddy County, North Dakota

• ND DOT county map of Eddy Country (PDF)

47°43′N 98°54′W / 47.72°N 98.90°W / 47.72; -98.90