Zip code 57445: Groton, South Dakota

Q: What city is zip code 57445?

57445 is assigned to Groton, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57445 in?

57445 is in Brown County, South Dakota.

Q: What is the population of 57445?

About 2,072 people live in 57445, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57445?

The median household income in 57445 is $84,948.

Q: What zip codes are near 57445?

The closest zip codes to 57445 are 57439, 57422, 57427, 57402, 57474.

Residential delivery areaBrown CountyCentral Time

Population

2,072

Median household income

$85K

U.S. $81K

Median home value

$194K

U.S. $333K

Median rent

$1,015/mo

U.S. $1,413

Median age

38.3

U.S. 38.9

Land area

254 sq mi

8 people/sq mi

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

About 57445

57445 is a rural zip code in Groton, South Dakota (Brown County), covering 254 sq mi of land. About 2,072 people live here, or 8 per square mile. The median resident is 38.3 years old, compared with 38.9 nationally.

The median household earns $84,948 a year, close to the national median of $80,734. 3.5% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $193,800, or 2.3 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 77% of occupied homes are lived in by their owners, and renters pay a median of $1,015 a month.

29% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 17.2 minutes each way, and 5% of workers work from home. The most common jobs among working residents are in healthcare; management; and production and manufacturing. 17% of them are self-employed (U.S.: 10%).

How 57445 compares

Sorted from highest to lowest national percentile

Self-employed workers17.2%
95th
U.S. 10% · SD 12.1%180th of 347 in SD
Healthcare workers13.4%
90th
U.S. 9.7% · SD 10.5%57th of 347 in SD
Veterans9.8%
89th
U.S. 6.2% · SD 7.9%77th of 347 in SD
Housing vacancy12.5%
80th
U.S. 10.1% · SD 10.5%196th of 344 in SD
Median earnings per worker$62,000
79th
U.S. $49,666 · SD $46,53914th of 345 in SD
Residents under 1825%
74th
U.S. 22% · SD 24.2%158th of 347 in SD
Homeownership rate76.8%
71st
U.S. 65.2% · SD 68.6%202nd of 344 in SD
Per capita income$46,542
66th
U.S. $44,673 · SD $40,55066th of 347 in SD
Residents 65 and older17.8%
59th
U.S. 17.2% · SD 18%212th of 347 in SD
Median household income$84,948
56th
U.S. $80,734 · SD $75,08198th of 327 in SD
Uninsured rate6.5%
47th
U.S. 8.4% · SD 9%183rd of 347 in SD
Median age38.3
45th
U.S. 38.9 · SD 38224th of 347 in SD
Bachelor's degree or higher28.9%
43rd
U.S. 35.7% · SD 31.9%115th of 346 in SD
Income inequality (Gini)0.413
31st
U.S. 0.483 · SD 0.449170th of 343 in SD
Broadband access88.1%
24th
U.S. 91% · SD 89.6%167th of 344 in SD
Median gross rent$1,015
22nd
U.S. $1,413 · SD $94638th of 243 in SD
Unemployment rate3.3%
21st
U.S. 5.2% · SD 2.9%94th of 347 in SD
Median home value$193,800
20th
U.S. $332,700 · SD $257,400135th of 302 in SD
Foreign-born residents2.8%
17th
U.S. 14.1% · SD 4%71st of 347 in SD
Government workers9.8%
17th
U.S. 14.5% · SD 15.8%263rd of 347 in SD
Diversity index17.5
10th
U.S. 61.4 · SD 35.4170th of 347 in SD
Rent-burdened renters34.3%
8th
StrengthU.S. 51.1% · SD 39.8%128th of 313 in SD
Work from home4.7%
7th
U.S. 15.1% · SD 9.7%286th of 347 in SD
Poverty rate3.5%
4th
StrengthU.S. 12.5% · SD 11.9%287th of 344 in SD
Average commute17.2 min
4th
StrengthU.S. 26.4 min · SD 17.8 min230th of 330 in SD
Tech workers0.3%
4th
U.S. 3.8% · SD 2.3%170th of 347 in SD
Population2,072
3rd
U.S. 334,922,499 · SD 907,42867th of 347 in SD
Population density8/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi128th of 347 in SD

Measure	57445	Brown	SD	U.S.	National percentile	Rank in SD
Self-employed workers	17.2%	10.2%	12.1%	10%	95th	180th of 347
Healthcare workers	13.4%	10.8%	10.5%	9.7%	90th	57th of 347
Veterans	9.8%	6.6%	7.9%	6.2%	89th	77th of 347
Housing vacancy	12.5%	10%	10.5%	10.1%	80th	196th of 344
Median earnings per worker	$62,000	$45,396	$46,539	$49,666	79th	14th of 345
Residents under 18	25%	23.6%	24.2%	22%	74th	158th of 347
Homeownership rate	76.8%	67.6%	68.6%	65.2%	71st	202nd of 344
Per capita income	$46,542	$40,863	$40,550	$44,673	66th	66th of 347
Residents 65 and older	17.8%	17.8%	18%	17.2%	59th	212th of 347
Median household income	$84,948	$70,898	$75,081	$80,734	56th	98th of 327
Uninsured rate	6.5%	5.7%	9%	8.4%	47th	183rd of 347
Median age	38.3	37.8	38	38.9	45th	224th of 347
Bachelor's degree or higher	28.9%	33.8%	31.9%	35.7%	43rd	115th of 346
Income inequality (Gini)	0.413	0.459	0.449	0.483	31st	170th of 343
Broadband access	88.1%	87.5%	89.6%	91%	24th	167th of 344
Median gross rent	$1,015	$777	$946	$1,413	22nd	38th of 243
Unemployment rate	3.3%	3.3%	2.9%	5.2%	21st	94th of 347
Median home value	$193,800	$221,100	$257,400	$332,700	20th	135th of 302
Foreign-born residents	2.8%	4.3%	4%	14.1%	17th	71st of 347
Government workers	9.8%	16.8%	15.8%	14.5%	17th	263rd of 347
Diversity index	17.5	27.7	35.4	61.4	10th	170th of 347
Rent-burdened rentersStrength	34.3%	45.8%	39.8%	51.1%	8th	128th of 313
Work from home	4.7%	6.3%	9.7%	15.1%	7th	286th of 347
Poverty rateStrength	3.5%	11.7%	11.9%	12.5%	4th	287th of 344
Average commuteStrength	17.2 min	13.9 min	17.8 min	26.4 min	4th	230th of 330
Tech workers	0.3%	0.9%	2.3%	3.8%	4th	170th of 347
Population	2,072	37,877	907,428	334,922,499	3rd	67th of 347
Population density	8/sq mi	22/sq mi	12/sq mi	95/sq mi	1st	128th 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

18%

5–17

18–24

16%

25–34

12%

35–44

10%

45–54

16%

55–64

65–74

75+

Median age

38.3

Under 18

25%

65 and over

17.8%

Race and ethnicity

White91%
Black0%
Hispanic4%
Asian2%
Native American2%
Pacific Islander0%
Other0%
Multiracial2%

Diversity index

17.5

U.S. 61.4

Foreign-born

2.8%

U.S. 14.1%

Born in state

79%

Language spoken at home (households)

English only

91%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 865
Average household size: 2.4
Family households: 62.2%
Married couples: 50.5%
Living alone: 34.6%
Veterans (of adults): 9.8%
Male / female: 54% / 46%

Income and poverty

Household income distribution

<$25k

$25–50k

26%

$50–75k

11%

$75–100k

12%

$100–150k

17%

$150–200k

12%

$200k+

15%

Median household income

57445

$84,948

Brown Co.

$70,898

South Dakota

$75,081

United States

$80,734

Per capita income

$46,542

U.S. $44,673

Poverty rate

3.5%

U.S. 12.5%

Households earning $150K+

26.8%

U.S. 23%

Income inequality (Gini)

0.413

U.S. 0.483

Housing

Median home value

57445

$193,800

Brown Co.

$221,100

South Dakota

$257,400

United States

$332,700

Median gross rent

57445

$1,015

Brown Co.

$777

South Dakota

$946

United States

$1,413

Types of housing

Single-family

79%

2–4 units

10%

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 989
Owner-occupied: 76.8%
Vacant: 12.5%
Median year built: 1975
Median rooms: 6.5
Renters paying 30%+ of income: 34.3%
Renters paying 50%+ of income: 7.4%
Home value to income: 2.3× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

87%

Carpooled

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

33%

10–19

11%

20–29

42%

30–44

10%

45–59

60+

0.9%

Average commute

17.2 min

U.S. 26.4 min

Unemployment

3.3%

U.S. 5.2%

In labor force

67.5%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Healthcare

13%

Management

11%

Production

11%

Construction and repair

11%

Sales

11%

Cleaning and personal care

Legal and social services

Engineering and science

Business and finance

Farming, fishing and forestry

Education

Office and admin

Transportation and moving

Arts, media and sports

Food service

Police and fire

0.9%

Computer and math

0.3%

Industries

Health care and social assistance

18%

Manufacturing

15%

Retail

13%

Agriculture and mining

12%

Education

Finance, insurance and real estate

Construction

Wholesale

Public administration

Other services

Admin, support and management

Transportation, warehousing and utilities

Professional and technical services

Restaurants and hotels

Arts and recreation

Information

0.3%

Median earnings per worker

$62,000

U.S. $49,666

Self-employed

17.2%

U.S. 10%

Government workers

9.8%

U.S. 14.5%

Nonprofit workers

8.5%

U.S. 8.8%

Median earnings by type of work

Type of work	57445	U.S.
Management, business, science and arts	$69,028	$74,888
Service	$31,696	$26,804
Sales and office	$58,875	$40,476
Construction and maintenance	$62,019	$49,199
Production and transportation	$78,397	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

28%

Some college

23%

Associate's

16%

Bachelor's

18%

Graduate

11%

High school graduate or higher: 94.7%
Bachelor's degree or higher: 28.9%
Graduate or professional degree: 11%
Households with broadband: 88.1%
Cable, fiber or DSL: 74.2%
No internet access: 10.4%
Without health insurance: 6.5%
Limited-English households: 4.2%

Geography

City (USPS): Groton
State: South Dakota
County: Brown County
Center point: 45.4655° N, 98.1150° W
Land area: 254 sq mi
Water area: 0.1 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Zip codes near 57445

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57439	Ferney, SD	9.1 mi	0	—	—
57422	Andover, SD	9.5 mi	174	$88,125	—
57427	Bath, SD	9.9 mi	384	$83,977	$363,700
57402	Aberdeen, SD · PO box	14 mi	—	—	—
57474	Stratford, SD	14 mi	237	$100,833	$204,700
57433	Columbia, SD	16 mi	318	$50,417	—
57432	Claremont, SD	16 mi	507	$112,765	$77,600
57468	Pierpont, SD	18 mi	279	$76,250	$112,500
57449	Houghton, SD	18 mi	357	$150,000	—
57479	Warner, SD	19 mi	625	$102,222	$256,300
57219	Bristol, SD	20 mi	552	$51,900	$95,700
57454	Langford, SD	20 mi	732	$81,250	$155,300

Zip codes like 57445 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 57445

What city is zip code 57445?

57445 is assigned to Groton, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57445 in?

57445 is in Brown County, South Dakota.

What is the population of 57445?

About 2,072 people live in 57445, according to the Census Bureau's American Community Survey.

What time zone is 57445 in?

57445 is in Central Time.

What is the median household income in 57445?

The median household income in 57445 is $84,948.

What zip codes are near 57445?

The closest zip codes to 57445 are 57439, 57422, 57427, 57402, 57474.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57445, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.