The map above shows South Dakota and New Brunswick side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Dakota vs New Brunswick Geography
Land area: South Dakota has a land area of 75,808 square miles (196,342 km²), while New Brunswick has 27,587 square miles (71,450 km²). South Dakota's land area is 2.7 times (175%) larger than New Brunswick's.
Total area: South Dakota: 77,116 square miles (199,729 km²) vs New Brunswick: 28,150 square miles (72,908 km²), including inland and coastal water. South Dakota's total area is 2.7 times (174%) larger than New Brunswick's.
Length: South Dakota is 443 miles (712 km) long from north to south; New Brunswick is 241 miles (388 km). South Dakota's north-south length is 1.8 times (84%) longer than New Brunswick's.
Width: South Dakota spans 371 miles (597 km) east to west; New Brunswick spans 264 miles (424 km). South Dakota's east-west width is 1.4 times (41%) wider than New Brunswick's.
Highest point: South Dakota's highest point is Black Elk Peak at 7,198 feet (2,194 m); New Brunswick's is Mount Carleton at 2,680 feet (817 m). Black Elk Peak is 4,518 feet higher than Mount Carleton.
Lowest point: South Dakota's lowest point is Big Stone Lake at 966 feet; New Brunswick's is Atlantic Ocean at 0 feet. New Brunswick's lowest point is 966 feet lower.
South Dakota vs New Brunswick Population and History
Population: South Dakota has a population of 924,669 (2024), while New Brunswick has 867,383 (2026). South Dakota's population is 1.1 times (7%) larger than New Brunswick's.
Population density: South Dakota: 12.2 people per square mile vs New Brunswick: 31.4. New Brunswick's population density is 2.6 times (157%) higher than South Dakota's.
Biggest city: South Dakota's biggest city is Sioux Falls with 209,289 people; New Brunswick's is Moncton with 79,470. Sioux Falls' population is 2.6 times (163%) larger than Moncton's.
Largest metro area: South Dakota's largest metropolitan area is Sioux Falls, SD-MN metro area (308,266 people) vs New Brunswick's Moncton CMA (157,717). Sioux Falls, SD-MN metro area's population is 2.0 times (95%) larger than Moncton CMA's.
History: South Dakota: Admitted to the Union on November 2, 1889, as the 40th state. New Brunswick: Joined Confederation on July 1, 1867, as one of the four founding provinces. In its current form, New Brunswick is the older of the two by 22 years.
South Dakota vs New Brunswick Economy
GDP: South Dakota's GDP is $76.8 billion (2024) vs New Brunswick's $35.3 billion. South Dakota's economic output is 2.2 times (118%) larger than New Brunswick's.
GDP per capita: South Dakota: $83,052 per person vs New Brunswick: $41,088. South Dakota's GDP per capita is 2.0 times (102%) higher than New Brunswick's.
Official Websites
South Dakota official website · New Brunswick official website
More Size Comparisons
All South Dakota size comparisons · All New Brunswick size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.