• county
  • FIPS 46041
  • Largest town: Eagle Butte

Dewey County, South Dakota

Dewey County had 5,322 residents in the Census Vintage 2024 estimate, on 2,302.4 square miles of land. It ranks 33rd of 66 in South Dakota by population and 6th by land area.

Population
5,322
#33 of 66 in South Dakota · #2,794 in US
Area
2,302.4 sq mi
#6 of 66 in South Dakota · #242 in US
Density
2.3 / sq mi
#50 of 66 in South Dakota · #2,958 in US
Median household income
$48,477
#61 of 66 in South Dakota · #2,808 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Dewey County within South Dakota. Pin: Pierre.

Measure from here

Tools and pages that start from Dewey County

Dewey County population, land area and income

Dewey County had 5,322 residents in the Census Vintage 2024 estimate, on 2,302.4 square miles of land. It ranks 33rd of 66 in South Dakota by population and 6th by land area. That works out to 2.3 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in South Dakota has 5,296 residents, about the same as Dewey County.

Its SAIPE 2023 median household income of $48,477 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

5,322

3144th1st

2794th of 3,144 (US)

Land area

2,302 sq mi

3144th1st

242nd of 3,144 (US)

Density

2.3 / sq mi

3144th1st

2958th of 3,144 (US)

Median household income

$48,477

3143rd1st

2808th of 3,143 (US)

Rank within South Dakota (66)

Population

5,322

66th1st

33rd of 66 (SD)

Land area

2,302 sq mi

66th1st

6th of 66 (SD)

Density

2.3 / sq mi

66th1st

50th of 66 (SD)

Median household income

$48,477

66th1st

61st of 66 (SD)

How Dewey County's population changed since 2020

Dewey County gained 97 residents between the July 2020 and July 2024 estimates, a rise of 1.9%. That ranks 21st of 66 in South Dakota for growth. The median South Dakota county changed by +0.8%, and the state as a whole by +4.1%.

Since the April 2020 estimates base, Dewey County recorded 649 births and 416 deaths, a natural change of +233. Net international migration added +3 and net domestic migration, people moving to or from other US counties, came to -159. The largest single component was natural change, which added 233 people.

5,22520205,22120215,07820225,17920235,3222024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
649
Deaths
416
Net international migration
+3
Net domestic migration
-159
Change, July 2023 to July 2024
+143

Where Dewey County is

The Census internal point of Dewey County is at 45.148000, -100.838000. It sits in UTM zone 14N. The map shades South Dakota's 66 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Dewey County outlined. Dots are towns of 1,000+ people with residents in it.

Davison County: -0.2%Minnehaha County: +5.5%Bennett County: -3.0%Clark County: +3.2%Hamlin County: +7.1%Jerauld County: +2.8%Brule County: +0.2%Aurora County: +0.4%Turner County: +4.6%Beadle County: +1.5%Hand County: -1.6%Kingsbury County: +1.0%McCook County: +1.7%Miner County: -0.0%Lyman County: +0.5%Codington County: +3.3%Deuel County: +0.8%Sully County: +1.1%Oglala Lakota County: -2.1%Edmunds County: +0.8%Sanborn County: +2.7%Spink County: -3.7%Lake County: -0.1%Hyde County: -3.0%Potter County: -2.9%Perkins County: -0.6%Faulk County: +0.5%Day County: -0.5%Clay County: +1.6%Hanson County: +0.5%Fall River County: +5.5%Brookings County: +5.9%Yankton County: +1.0%Hutchinson County: -0.1%Butte County: +5.8%Custer County: +11.8%Lawrence County: +11.5%Hughes County: -1.2%Grant County: +1.0%Brown County: -1.9%Gregory County: +2.8%Campbell County: -2.8%Bon Homme County: +1.4%McPherson County: -4.0%Lincoln County: +14.6%Stanley County: +1.5%Walworth County: -0.5%Harding County: +1.3%Marshall County: +2.3%Union County: +3.2%Pennington County: +5.8%Buffalo County: -5.8%Moody County: +3.0%Tripp County: +2.0%Roberts County: +0.2%Charles Mix County: -0.3%Meade County: +3.4%Haakon County: -1.8%Jones County: -5.3%Douglas County: +0.5%Dewey County: +1.9%Corson County: -3.6%Mellette County: -4.6%Todd County: -1.6%Jackson County: -2.4%Ziebach County: +1.0%
Change 2020 to 2024
  1. < -1.8%
  2. < +0.2%
  3. < +1.3%
  4. < +3.2%
  5. ≥ +3.2%
no data

Orange pin: Dewey County internal point. Dark pin: Pierre.

Internal point

Decimal
45.148000, -100.838000
DMS
45°08'52.80"N 100°50'16.80"W
UTM
14N 355511.0E 5001034.8N
Geohash
cb02c6un0
Plus code
85QX45X6+6R

Towns in Dewey County

One incorporated place of 1,000+ people has residents in Dewey County, 650 people together, or 12% of the county. Each figure counts only the part of the town inside Dewey County; towns marked "part" extend into another county. The largest is Eagle Butte with 650.

  1. 01Eagle Butte (part)650
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Dewey County

The Census 2024 county adjacency file lists 7 neighbors for Dewey County. The most populous is Walworth County, SD, with 5,270 residents. Distances run between Census internal points in a straight line.

Distance to Pierre and the nearest big city

Pierre is 59.1 miles SSE of Dewey County's internal point in a straight line. The nearest place of 100,000 or more is Fargo, ND (population 136,285), 226.0 miles away. The nearest place of 10,000 or more is Pierre, SD (population 13,788), 59.2 miles away.

Dewey County FIPS code

The FIPS code of Dewey County is 46041: state code 46 for South Dakota plus county code 041. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $48,477.

Questions people ask

What is the population of Dewey County, South Dakota?

The Census Vintage 2024 estimate for July 1, 2024 is 5,322. That is up 97 people (1.9%) from the July 2020 estimate of 5,225.

What is the FIPS code of Dewey County?

46041. The first two digits (46) are South Dakota; the last three (041) identify the county.

What is the largest town in Dewey County?

Eagle Butte, with 650 residents inside Dewey County in 2024 (1,270 across all 2 counties it spans).

Which counties border Dewey County?

7 county-equivalents border it in the Census 2024 adjacency file: Walworth County, SD; Corson County, SD; Stanley County, SD; Ziebach County, SD; Potter County, SD; Haakon County, SD; Sully County, SD.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.