• county
  • FIPS 46051
  • Largest town: Milbank

Grant County, South Dakota

Grant County had 7,618 residents in the Census Vintage 2024 estimate, on 681.5 square miles of land. It ranks 23rd of 66 in South Dakota by population and 48th by land area.

Population
7,618
#23 of 66 in South Dakota · #2,605 in US
Area
681.5 sq mi
#48 of 66 in South Dakota · #1,376 in US
Density
11 / sq mi
#19 of 66 in South Dakota · #2,522 in US
Median household income
$73,409
#14 of 66 in South Dakota · #762 in US

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

Grant County within South Dakota. Pin: Pierre.

Measure from here

Tools and pages that start from Grant County

Grant County population, land area and income

Grant County had 7,618 residents in the Census Vintage 2024 estimate, on 681.5 square miles of land. It ranks 23rd of 66 in South Dakota by population and 48th by land area. That works out to 11.2 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; Grant County is somewhat larger.

Its SAIPE 2023 median household income of $73,409 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

7,618

3144th1st

2605th of 3,144 (US)

Land area

681 sq mi

3144th1st

1376th of 3,144 (US)

Density

11.2 / sq mi

3144th1st

2522nd of 3,144 (US)

Median household income

$73,409

3143rd1st

762nd of 3,143 (US)

Rank within South Dakota (66)

Population

7,618

66th1st

23rd of 66 (SD)

Land area

681 sq mi

66th1st

48th of 66 (SD)

Density

11.2 / sq mi

66th1st

19th of 66 (SD)

Median household income

$73,409

66th1st

14th of 66 (SD)

How Grant County's population changed since 2020

Grant County gained 79 residents between the July 2020 and July 2024 estimates, a rise of 1.0%. That ranks 29th 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, Grant County recorded 397 births and 430 deaths, a natural change of -33. Net international migration added +97 and net domestic migration, people moving to or from other US counties, came to -13. The largest single component was international migration, which added 97 people.

7,53920207,55420217,53520227,57120237,6182024
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
397
Deaths
430
Net international migration
+97
Net domestic migration
-13
Change, July 2023 to July 2024
+47

Where Grant County is

The Census internal point of Grant County is at 45.172600, -96.772300. 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 Grant 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: Grant County internal point. Dark pin: Pierre.

Internal point

Decimal
45.172600, -96.772300
DMS
45°10'21.36"N 96°46'20.28"W
UTM
14N 675048.7E 5004538.5N
Geohash
cb50vzkt3
Plus code
86Q556FH+23

Towns in Grant County

One incorporated place of 1,000+ people has residents in Grant County, 3,545 people together, or 47% of the county. Each figure counts only the part of the town inside Grant County; towns marked "part" extend into another county. The largest is Milbank with 3,545.

  1. 01Milbank3,545
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Grant County

The Census 2024 county adjacency file lists 6 neighbors for Grant County, including 2 across a state line. The most populous is Codington County, SD, with 29,278 residents. Distances run between Census internal points in a straight line.

Distance to Pierre and the nearest big city

Pierre is 183.9 miles WSW of Grant County's internal point in a straight line. The nearest place of 100,000 or more is Sioux Falls, SD (population 209,289), 112.8 miles away. The nearest place of 10,000 or more is Watertown, SD (population 23,492), 26.1 miles away.

Grant County FIPS code

The FIPS code of Grant County is 46051: state code 46 for South Dakota plus county code 051. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,409.

Questions people ask

What is the population of Grant County, South Dakota?

The Census Vintage 2024 estimate for July 1, 2024 is 7,618. That is up 79 people (1.0%) from the July 2020 estimate of 7,539.

What is the FIPS code of Grant County?

46051. The first two digits (46) are South Dakota; the last three (051) identify the county.

What is the largest town in Grant County?

Milbank, with 3,545 residents inside Grant County in 2024.

Which counties border Grant County?

6 county-equivalents border it in the Census 2024 adjacency file: Codington County, SD; Roberts County, SD; Lac qui Parle County, MN; Day County, SD; Big Stone County, MN; Deuel 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.