Zip code 57646: Mound City, South Dakota

Q: What city is zip code 57646?

57646 is assigned to Mound City, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57646 in?

57646 is in Campbell County, South Dakota.

Q: What is the population of 57646?

About 272 people live in 57646, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57646?

The median household income in 57646 is $101,406.

Q: What zip codes are near 57646?

The closest zip codes to 57646 are 57632, 57631, 57452, 57472, 57648.

Residential delivery areaCampbell CountyCentral Time

Population

272

Small sample: rough estimates

Median household income

$101K

U.S. $81K

Median home value

$113K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

37.5

U.S. 38.9

Land area

128 sq mi

2 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 57646

57646 is a rural zip code in Mound City, South Dakota (Campbell County), covering 128 sq mi of land. About 272 people live here, or 2 per square mile. The median resident is 37.5 years old, compared with 38.9 nationally. With so few residents, the Census figures below are rough estimates with wide margins of error.

The median household earns $101,406 a year, 26% above the national median of $80,734. 12.9% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $113,300, or 1.1 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 88% of occupied homes are lived in by their owners.

47% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21 minutes each way, and 44% of workers work from home. The most common jobs among working residents are in education; management; and transportation and moving goods.

How 57646 compares

Sorted from highest to lowest national percentile

Only about 272 people live here, so these survey estimates have wide margins of error.

Work from home43.5%
99th
U.S. 15.1% · SD 9.7%11th of 347 in SD
Housing vacancy23.8%
96th
U.S. 10.1% · SD 10.5%81st of 344 in SD
Government workers26.8%
96th
U.S. 14.5% · SD 15.8%62nd of 347 in SD
Homeownership rate88.1%
93rd
StrengthU.S. 65.2% · SD 68.6%82nd of 344 in SD
Self-employed workers13.8%
86th
U.S. 10% · SD 12.1%233rd of 347 in SD
Bachelor's degree or higher47%
76th
U.S. 35.7% · SD 31.9%16th of 346 in SD
Median household income$101,406
72nd
U.S. $80,734 · SD $75,08136th of 327 in SD
Residents 65 and older19.1%
68th
U.S. 17.2% · SD 18%191st of 347 in SD
Median earnings per worker$52,917
63rd
U.S. $49,666 · SD $46,53964th of 345 in SD
Poverty rate12.9%
60th
U.S. 12.5% · SD 11.9%113th of 344 in SD
Foreign-born residents13.2%
60th
U.S. 14.1% · SD 4%5th of 347 in SD
Residents under 1823.2%
60th
U.S. 22% · SD 24.2%190th of 347 in SD
Per capita income$38,411
45th
U.S. $44,673 · SD $40,550176th of 347 in SD
Median age37.5
38th
U.S. 38.9 · SD 38235th of 347 in SD
Diversity index37
32nd
U.S. 61.4 · SD 35.459th of 347 in SD
Rent-burdened renters45.5%
31st
U.S. 51.1% · SD 39.8%61st of 313 in SD
Veterans3.8%
24th
U.S. 6.2% · SD 7.9%284th of 347 in SD
Average commute21 min
17th
StrengthU.S. 26.4 min · SD 17.8 min147th of 330 in SD
Broadband access84.4%
11th
WeaknessU.S. 91% · SD 89.6%232nd of 344 in SD
Uninsured rate2.6%
9th
StrengthU.S. 8.4% · SD 9%294th of 347 in SD
Median home value$113,300
4th
U.S. $332,700 · SD $257,400240th of 302 in SD
Income inequality (Gini)0.356
3rd
StrengthU.S. 0.483 · SD 0.449259th of 343 in SD
Population272
1st
U.S. 334,922,499 · SD 907,428273rd of 347 in SD
Population density2/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi266th of 347 in SD
Unemployment rate0%
1st
StrengthU.S. 5.2% · SD 2.9%243rd of 347 in SD
Tech workers0%
1st
U.S. 3.8% · SD 2.3%199th of 347 in SD
Healthcare workers0.7%
1st
U.S. 9.7% · SD 10.5%297th of 347 in SD

Measure	57646	Campbell	SD	U.S.	National percentile	Rank in SD
Work from home	43.5%	25.1%	9.7%	15.1%	99th	11th of 347
Housing vacancy	23.8%	18%	10.5%	10.1%	96th	81st of 344
Government workers	26.8%	12.4%	15.8%	14.5%	96th	62nd of 347
Homeownership rateStrength	88.1%	76.3%	68.6%	65.2%	93rd	82nd of 344
Self-employed workers	13.8%	29.6%	12.1%	10%	86th	233rd of 347
Bachelor's degree or higher	47%	36%	31.9%	35.7%	76th	16th of 346
Median household income	$101,406	$68,929	$75,081	$80,734	72nd	36th of 327
Residents 65 and older	19.1%	26.9%	18%	17.2%	68th	191st of 347
Median earnings per worker	$52,917	$47,500	$46,539	$49,666	63rd	64th of 345
Poverty rate	12.9%	7.7%	11.9%	12.5%	60th	113th of 344
Foreign-born residents	13.2%	4.6%	4%	14.1%	60th	5th of 347
Residents under 18	23.2%	20.8%	24.2%	22%	60th	190th of 347
Per capita income	$38,411	$46,377	$40,550	$44,673	45th	176th of 347
Median age	37.5	50.9	38	38.9	38th	235th of 347
Diversity index	37	20.7	35.4	61.4	32nd	59th of 347
Rent-burdened renters	45.5%	42.9%	39.8%	51.1%	31st	61st of 313
Veterans	3.8%	7.8%	7.9%	6.2%	24th	284th of 347
Average commuteStrength	21 min	15.5 min	17.8 min	26.4 min	17th	147th of 330
Broadband accessWeakness	84.4%	82.6%	89.6%	91%	11th	232nd of 344
Uninsured rateStrength	2.6%	4.8%	9%	8.4%	9th	294th of 347
Median home value	$113,300	$115,900	$257,400	$332,700	4th	240th of 302
Income inequality (Gini)Strength	0.356	0.474	0.449	0.483	3rd	259th of 343
Population	272	1,593	907,428	334,922,499	1st	273rd of 347
Population density	2/sq mi	2/sq mi	12/sq mi	95/sq mi	1st	266th of 347
Unemployment rateStrength	0%	3.1%	2.9%	5.2%	1st	243rd of 347
Tech workers	0%	1.1%	2.3%	3.8%	1st	199th of 347
Healthcare workers	0.7%	5.6%	10.5%	9.7%	1st	297th of 347

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

23%

5–17

18–24

12%

25–34

18%

35–44

45–54

11%

55–64

65–74

11%

75+

Median age

37.5

Under 18

23.2%

65 and over

19.1%

Race and ethnicity

White76%
Black0%
Hispanic21%
Asian0%
Native American1%
Pacific Islander0%
Other0%
Multiracial1%

Diversity index

U.S. 61.4

Foreign-born

13.2%

U.S. 14.1%

Born in state

59.2%

Language spoken at home (households)

English only

84%

Spanish

10%

Other Indo-European

Asian / Pacific

Other

Households

Households: 109
Average household size: 2.5
Family households: 79.8%
Married couples: 79.8%
Living alone: 14.7%
Veterans (of adults): 3.8%
Male / female: 53% / 47%

Income and poverty

Household income distribution

<$25k

14%

$25–50k

17%

$50–75k

13%

$75–100k

$100–150k

28%

$150–200k

25%

$200k+

0.9%

Median household income

57646

$101,406

Campbell Co.

$68,929

South Dakota

$75,081

United States

$80,734

Per capita income

$38,411

U.S. $44,673

Poverty rate

12.9%

U.S. 12.5%

Households earning $150K+

25.7%

U.S. 23%

Income inequality (Gini)

0.356

U.S. 0.483

Housing

Median home value

57646

$113,300

Campbell Co.

$115,900

South Dakota

$257,400

United States

$332,700

Median gross rent

57646

—

Campbell Co.

$760

South Dakota

$946

United States

$1,413

Types of housing

Single-family

79%

2–4 units

5–19 units

20+ units

Mobile home

20%

Boat, RV, van

Housing units: 143
Owner-occupied: 88.1%
Vacant: 23.8%
Median year built: 1969
Median rooms: 5.5
Renters paying 30%+ of income: 45.5%
Renters paying 50%+ of income: 45.5%
Home value to income: 1.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

54%

Carpooled

Transit

Walked

Bicycle

Worked from home

43%

Other

Commute time (one way)

<10 min

21%

10–19

40%

20–29

19%

30–44

12%

45–59

60+

Average commute

21 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

65.4%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Education

20%

Management

20%

Transportation and moving

19%

Sales

13%

Farming, fishing and forestry

Engineering and science

Cleaning and personal care

Office and admin

Construction and repair

Business and finance

Police and fire

Healthcare

0.7%

Computer and math

Legal and social services

Arts, media and sports

Food service

Production

Industries

Education

21%

Agriculture and mining

21%

Finance, insurance and real estate

18%

Transportation, warehousing and utilities

16%

Health care and social assistance

Retail

Public administration

Wholesale

Professional and technical services

Construction

Arts and recreation

Information

0.7%

Manufacturing

Restaurants and hotels

Admin, support and management

Other services

Median earnings per worker

$52,917

U.S. $49,666

Self-employed

13.8%

U.S. 10%

Government workers

26.8%

U.S. 14.5%

Nonprofit workers

2.2%

U.S. 8.8%

Median earnings by type of work

Type of work	57646	U.S.
Management, business, science and arts	$54,063	$74,888
Service	—	$26,804
Sales and office	$120,667	$40,476
Construction and maintenance	$36,042	$49,199
Production and transportation	$26,125	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

22%

Some college

14%

Associate's

14%

Bachelor's

47%

Graduate

High school graduate or higher: 96.8%
Bachelor's degree or higher: 47%
Graduate or professional degree: 0%
Households with broadband: 84.4%
Cable, fiber or DSL: 74.3%
No internet access: 9.2%
Without health insurance: 2.6%
Limited-English households: 4.6%

Geography

City (USPS): Mound City
State: South Dakota
County: Campbell County
Center point: 45.6805° N, 100.0582° W
Land area: 128 sq mi
Water area: 0.6 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Zip codes near 57646

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57632	Herreid, SD	11 mi	757	$81,719	$108,800
57631	Glenham, SD	13 mi	364	$56,827	$162,500
57452	Java, SD	14 mi	136	$53,571	$80,700
57472	Selby, SD	18 mi	1,165	$61,708	$120,200
57648	Pollock, SD	21 mi	465	$61,354	$99,200
57437	Eureka, SD	22 mi	1,074	$49,276	$86,700
57428	Bowdle, SD	24 mi	567	$64,375	$143,800
57658	Wakpala, SD	24 mi	319	$23,000	$85,000
58542	Hague, ND	25 mi	215	$46,250	$105,800
57420	Akaska, SD	28 mi	260	$40,469	$79,000
57601	Mobridge, SD	28 mi	3,422	$66,003	$154,600
58581	Zeeland, ND	28 mi	263	$63,047	$29,200

Questions about 57646

What city is zip code 57646?

57646 is assigned to Mound City, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57646 in?

57646 is in Campbell County, South Dakota.

What is the population of 57646?

About 272 people live in 57646, according to the Census Bureau's American Community Survey.

What time zone is 57646 in?

57646 is in Central Time.

What is the median household income in 57646?

The median household income in 57646 is $101,406.

What zip codes are near 57646?

The closest zip codes to 57646 are 57632, 57631, 57452, 57472, 57648.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57646, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.