Zip code 57720: Buffalo, South Dakota

Q: What city is zip code 57720?

57720 is assigned to Buffalo, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57720 in?

57720 is in Harding County, South Dakota.

Q: What is the population of 57720?

About 518 people live in 57720, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57720?

The median household income in 57720 is $79,091.

Q: What zip codes are near 57720?

The closest zip codes to 57720 are 57724, 57776, 57755, 57651, 59319.

Residential delivery areaHarding CountyMountain Time

Population

518

Median household income

$79K

U.S. $81K

Median home value

$157K

U.S. $333K

Median rent

$586/mo

U.S. $1,413

Median age

52.3

U.S. 38.9

Land area

1,296 sq mi

0 people/sq mi

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

About 57720

57720 is a rural zip code in Buffalo, South Dakota (Harding County), covering 1,296 sq mi of land. About 518 people live here. The median resident is 52.3 years old, compared with 38.9 nationally.

The median household earns $79,091 a year, close to the national median of $80,734. 12% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $157,000, or 2.0 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 81% of occupied homes are lived in by their owners, and renters pay a median of $586 a month.

25% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 14 minutes each way, and 14% of workers work from home. The most common jobs among working residents are in management; transportation and moving goods; and construction and repair. 18% of them are self-employed (U.S.: 10%).

How 57720 compares

Sorted from highest to lowest national percentile

Housing vacancy30.2%
98th
U.S. 10.1% · SD 10.5%39th of 344 in SD
Median age52.3
97th
U.S. 38.9 · SD 3864th of 347 in SD
Self-employed workers17.7%
95th
U.S. 10% · SD 12.1%172nd of 347 in SD
Homeownership rate81.1%
81st
StrengthU.S. 65.2% · SD 68.6%150th of 344 in SD
Veterans8.5%
81st
U.S. 6.2% · SD 7.9%114th of 347 in SD
Residents 65 and older21.2%
80th
U.S. 17.2% · SD 18%159th of 347 in SD
Per capita income$51,037
74th
U.S. $44,673 · SD $40,55044th of 347 in SD
Government workers16.7%
70th
U.S. 14.5% · SD 15.8%150th of 347 in SD
Work from home14.1%
57th
U.S. 15.1% · SD 9.7%115th of 347 in SD
Poverty rate12%
56th
U.S. 12.5% · SD 11.9%123rd of 344 in SD
Median earnings per worker$49,750
55th
U.S. $49,666 · SD $46,539102nd of 345 in SD
Median household income$79,091
49th
U.S. $80,734 · SD $75,081129th of 327 in SD
Income inequality (Gini)0.433
49th
U.S. 0.483 · SD 0.449124th of 343 in SD
Broadband access90.5%
37th
U.S. 91% · SD 89.6%125th of 344 in SD
Bachelor's degree or higher25%
34th
U.S. 35.7% · SD 31.9%170th of 346 in SD
Residents under 1820.1%
32nd
U.S. 22% · SD 24.2%249th of 347 in SD
Diversity index23.2
16th
U.S. 61.4 · SD 35.4118th of 347 in SD
Foreign-born residents2.1%
13th
U.S. 14.1% · SD 4%95th of 347 in SD
Tech workers1%
13th
U.S. 3.8% · SD 2.3%117th of 347 in SD
Median home value$157,000
11th
U.S. $332,700 · SD $257,400185th of 302 in SD
Uninsured rate2.3%
7th
StrengthU.S. 8.4% · SD 9%302nd of 347 in SD
Unemployment rate1.9%
5th
StrengthU.S. 5.2% · SD 2.9%140th of 347 in SD
Population518
1st
U.S. 334,922,499 · SD 907,428205th of 347 in SD
Population density0/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi344th of 347 in SD
Median gross rent$586
1st
U.S. $1,413 · SD $946205th of 243 in SD
Average commute14 min
1st
StrengthU.S. 26.4 min · SD 17.8 min275th of 330 in SD
Rent-burdened renters9.4%
1st
StrengthU.S. 51.1% · SD 39.8%245th of 313 in SD
Healthcare workers1.6%
1st
U.S. 9.7% · SD 10.5%290th of 347 in SD

Measure	57720	Harding	SD	U.S.	National percentile	Rank in SD
Housing vacancy	30.2%	27.6%	10.5%	10.1%	98th	39th of 344
Median age	52.3	46.3	38	38.9	97th	64th of 347
Self-employed workers	17.7%	27.8%	12.1%	10%	95th	172nd of 347
Homeownership rateStrength	81.1%	76.5%	68.6%	65.2%	81st	150th of 344
Veterans	8.5%	9.8%	7.9%	6.2%	81st	114th of 347
Residents 65 and older	21.2%	20.7%	18%	17.2%	80th	159th of 347
Per capita income	$51,037	$45,756	$40,550	$44,673	74th	44th of 347
Government workers	16.7%	19.1%	15.8%	14.5%	70th	150th of 347
Work from home	14.1%	16.4%	9.7%	15.1%	57th	115th of 347
Poverty rate	12%	6.3%	11.9%	12.5%	56th	123rd of 344
Median earnings per worker	$49,750	$46,544	$46,539	$49,666	55th	102nd of 345
Median household income	$79,091	$80,441	$75,081	$80,734	49th	129th of 327
Income inequality (Gini)	0.433	0.415	0.449	0.483	49th	124th of 343
Broadband access	90.5%	93.6%	89.6%	91%	37th	125th of 344
Bachelor's degree or higher	25%	30.4%	31.9%	35.7%	34th	170th of 346
Residents under 18	20.1%	23.3%	24.2%	22%	32nd	249th of 347
Diversity index	23.2	16.6	35.4	61.4	16th	118th of 347
Foreign-born residents	2.1%	1%	4%	14.1%	13th	95th of 347
Tech workers	1%	0.4%	2.3%	3.8%	13th	117th of 347
Median home value	$157,000	$166,100	$257,400	$332,700	11th	185th of 302
Uninsured rateStrength	2.3%	2.8%	9%	8.4%	7th	302nd of 347
Unemployment rateStrength	1.9%	0.9%	2.9%	5.2%	5th	140th of 347
Population	518	1,148	907,428	334,922,499	1st	205th of 347
Population density	0/sq mi	0/sq mi	12/sq mi	95/sq mi	1st	344th of 347
Median gross rent	$586	$521	$946	$1,413	1st	205th of 243
Average commuteStrength	14 min	18.7 min	17.8 min	26.4 min	1st	275th of 330
Rent-burdened rentersStrength	9.4%	5.1%	39.8%	51.1%	1st	245th of 313
Healthcare workers	1.6%	1.9%	10.5%	9.7%	1st	290th 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

15%

5–17

18–24

11%

25–34

35–44

16%

45–54

22%

55–64

17%

65–74

75+

Median age

52.3

Under 18

20.1%

65 and over

21.2%

Race and ethnicity

White87%
Black1%
Hispanic1.0%
Asian0%
Native American0.4%
Pacific Islander0%
Other3%
Multiracial7%

Diversity index

23.2

U.S. 61.4

Foreign-born

2.1%

U.S. 14.1%

Born in state

52.9%

Language spoken at home (households)

English only

96%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 264
Average household size: 2
Family households: 51.9%
Married couples: 46.6%
Living alone: 43.2%
Veterans (of adults): 8.5%
Male / female: 61% / 39%

Income and poverty

Household income distribution

<$25k

13%

$25–50k

16%

$50–75k

16%

$75–100k

22%

$100–150k

19%

$150–200k

$200k+

Median household income

57720

$79,091

Harding Co.

$80,441

South Dakota

$75,081

United States

$80,734

Per capita income

$51,037

U.S. $44,673

Poverty rate

12%

U.S. 12.5%

Households earning $150K+

14.4%

U.S. 23%

Income inequality (Gini)

0.433

U.S. 0.483

Housing

Median home value

57720

$157,000

Harding Co.

$166,100

South Dakota

$257,400

United States

$332,700

Median gross rent

57720

$586

Harding Co.

$521

South Dakota

$946

United States

$1,413

Types of housing

Single-family

75%

2–4 units

5–19 units

20+ units

Mobile home

19%

Boat, RV, van

0.5%

Housing units: 378
Owner-occupied: 81.1%
Vacant: 30.2%
Median year built: 1965
Median rooms: 5.5
Renters paying 30%+ of income: 9.4%
Renters paying 50%+ of income: 0%
Home value to income: 2.0× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

74%

Carpooled

Transit

Walked

Bicycle

Worked from home

14%

Other

Commute time (one way)

<10 min

56%

10–19

21%

20–29

30–44

45–59

0.7%

60+

Average commute

14 min

U.S. 26.4 min

Unemployment

1.9%

U.S. 5.2%

In labor force

75.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

25%

Transportation and moving

20%

Construction and repair

13%

Sales

Education

Legal and social services

Office and admin

Production

Business and finance

Engineering and science

Cleaning and personal care

Food service

Healthcare

Police and fire

Computer and math

Farming, fishing and forestry

Arts, media and sports

Industries

Agriculture and mining

26%

Retail

18%

Construction

Public administration

Transportation, warehousing and utilities

Education

Professional and technical services

Restaurants and hotels

Health care and social assistance

Finance, insurance and real estate

Other services

Information

Wholesale

Manufacturing

Admin, support and management

Arts and recreation

Median earnings per worker

$49,750

U.S. $49,666

Self-employed

17.7%

U.S. 10%

Government workers

16.7%

U.S. 14.5%

Nonprofit workers

6.4%

U.S. 8.8%

Median earnings by type of work

Type of work	57720	U.S.
Management, business, science and arts	$45,250	$74,888
Service	$21,250	$26,804
Sales and office	$44,000	$40,476
Construction and maintenance	$61,250	$49,199
Production and transportation	$61,111	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

33%

Some college

30%

Associate's

Bachelor's

22%

Graduate

High school graduate or higher: 95.5%
Bachelor's degree or higher: 25%
Graduate or professional degree: 3.3%
Households with broadband: 90.5%
Cable, fiber or DSL: 80.7%
No internet access: 7.2%
Without health insurance: 2.3%
Limited-English households: 0%

Geography

City (USPS): Buffalo
State: South Dakota
County: Harding County
Center point: 45.5372° N, 103.5861° W
Land area: 1,296 sq mi
Water area: 4.2 sq mi
Time zone: Mountain Time (UTC-7, UTC-6 in summer)
Zip type: Residential delivery area

Zip codes near 57720

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57724	Camp Crook, SD	20 mi	167	$61,146	—
57776	Redig, SD	21 mi	0	—	—
57755	Ludlow, SD	26 mi	101	$68,125	$164,100
57651	Reva, SD	27 mi	191	$94,559	$212,500
59319	Capitol, MT	29 mi	40	—	—
57650	Ralph, SD	34 mi	17	—	—
58623	Bowman, ND	44 mi	1,953	$64,487	$180,700
58653	Scranton, ND	44 mi	700	$85,714	$163,500
58643	Marmarth, ND	50 mi	119	$62,188	$51,300
58651	Rhame, ND	50 mi	513	$75,956	$117,600
59313	Baker, MT	59 mi	2,111	$78,015	$231,800
59354	Willard, MT	60 mi	258	$64,074	—

Questions about 57720

What city is zip code 57720?

57720 is assigned to Buffalo, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57720 in?

57720 is in Harding County, South Dakota.

What is the population of 57720?

About 518 people live in 57720, according to the Census Bureau's American Community Survey.

What time zone is 57720 in?

57720 is in Mountain Time.

What is the median household income in 57720?

The median household income in 57720 is $79,091.

What zip codes are near 57720?

The closest zip codes to 57720 are 57724, 57776, 57755, 57651, 59319.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57720, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.