• county
  • FIPS 46129
  • Largest town: Mobridge

Walworth County, South Dakota

Walworth County had 5,270 residents in the Census Vintage 2024 estimate, on 707.5 square miles of land. It ranks 34th of 66 in South Dakota by population and 46th by land area.

Population
5,270
#34 of 66 in South Dakota · #2,799 in US
Area
707.5 sq mi
#46 of 66 in South Dakota · #1,302 in US
Density
7.4 / sq mi
#26 of 66 in South Dakota · #2,668 in US
Median household income
$57,426
#53 of 66 in South Dakota · #2,091 in US

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

Walworth County within South Dakota. Pin: Pierre.

Measure from here

Tools and pages that start from Walworth County

Walworth County population, land area and income

Walworth County had 5,270 residents in the Census Vintage 2024 estimate, on 707.5 square miles of land. It ranks 34th of 66 in South Dakota by population and 46th by land area. That works out to 7.4 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 Walworth County.

Its SAIPE 2023 median household income of $57,426 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

5,270

3144th1st

2799th of 3,144 (US)

Land area

707 sq mi

3144th1st

1302nd of 3,144 (US)

Density

7.4 / sq mi

3144th1st

2668th of 3,144 (US)

Median household income

$57,426

3143rd1st

2091st of 3,143 (US)

Rank within South Dakota (66)

Population

5,270

66th1st

34th of 66 (SD)

Land area

707 sq mi

66th1st

46th of 66 (SD)

Density

7.4 / sq mi

66th1st

26th of 66 (SD)

Median household income

$57,426

66th1st

53rd of 66 (SD)

How Walworth County's population changed since 2020

Walworth County lost 24 residents between the July 2020 and July 2024 estimates, a drop of 0.5%. That ranks 47th 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, Walworth County recorded 315 births and 296 deaths, a natural change of +19. Net international migration added +2 and net domestic migration, people moving to or from other US counties, came to -64. The largest single component was domestic migration, which removed 64 people.

5,29420205,26120215,26620225,26420235,2702024
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
315
Deaths
296
Net international migration
+2
Net domestic migration
-64
Change, July 2023 to July 2024
+6

Where Walworth County is

The Census internal point of Walworth County is at 45.427600, -100.027900. 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 Walworth 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: Walworth County internal point. Dark pin: Pierre.

Internal point

Decimal
45.427600, -100.027900
DMS
45°25'39.36"N 100°01'40.44"W
UTM
14N 419590.7E 5030967.0N
Geohash
cb0f7vcfu
Plus code
85QXCXHC+2R

Towns in Walworth County

One incorporated place of 1,000+ people has residents in Walworth County, 3,219 people together, or 61% of the county. Each figure counts only the part of the town inside Walworth County; towns marked "part" extend into another county. The largest is Mobridge with 3,219.

  1. 01Mobridge3,219
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Walworth County

The Census 2024 county adjacency file lists 6 neighbors for Walworth County. The most populous is Dewey County, SD, with 5,322 residents. Distances run between Census internal points in a straight line.

Distance to Pierre and the nearest big city

Pierre is 74.9 miles SSW of Walworth County's internal point in a straight line. The nearest place of 100,000 or more is Fargo, ND (population 136,285), 182.5 miles away. The nearest place of 10,000 or more is Pierre, SD (population 13,788), 74.1 miles away.

Walworth County FIPS code

The FIPS code of Walworth County is 46129: state code 46 for South Dakota plus county code 129. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $57,426.

Questions people ask

What is the population of Walworth County, South Dakota?

The Census Vintage 2024 estimate for July 1, 2024 is 5,270. That is down 24 people (0.5%) from the July 2020 estimate of 5,294.

What is the FIPS code of Walworth County?

46129. The first two digits (46) are South Dakota; the last three (129) identify the county.

What is the largest town in Walworth County?

Mobridge, with 3,219 residents inside Walworth County in 2024.

Which counties border Walworth County?

6 county-equivalents border it in the Census 2024 adjacency file: Dewey County, SD; Edmunds County, SD; Corson County, SD; Potter County, SD; McPherson County, SD; Campbell 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.