57255 ZIP Code — New Effington, SD

Roberts County, South Dakota

ZIP code 57255 is located in New Effington, South Dakota, within Roberts County. It covers approximately 104.23 square miles and serves a population of 526 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

About ZIP code 57255

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $85,000. Owner-occupancy is high at 80%, well above the national average.

Median household income is $62,969. The poverty rate of 6% is below the national average. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 18 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 57255 reflects a community defined by high homeownership and a significant Social Security-dependent population.

526

population

104.23

sq mi land

Standard

ZIP type

Central (CT)

timezone

57255 ZIP code map

Cities in ZIP code 57255

Below are the cities the US Postal Service accepts for ZIP code 57255. Using any city not on this list may result in mail delivery delays.

City	Status
New Effington	Acceptable
New Effington	Preferred

Nearby ZIP codes

57224 Claire City (9 mi) 57260 Rosholt (9.9 mi) 57262 Sisseton (13.1 mi) 58041 Hankinson (14 mi) 58030 Fairmount (15.1 mi) 56219 Browns Valley (16.3 mi) 58053 Lidgerwood (18.6 mi)

Demographics updated 05/2026

Population
Total population	526
Population density	5 / sq mi
State FIPS	46
County FIPS	109

Geography
Land area	104.23 sq mi
Water area	1.58 sq mi
Latitude	45.8777
Longitude	-96.9157
Timezone	Central (CT)
Area code	605

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	45.3%	50.2%	41.7%
$50k – $100k	43.8%	32.4%	33.8%
$100k – $200k	10.9%	14.7%	20.1%
Over $200k	0.0%	2.7%	4.4%

Demographics & statistics

526

Population

People per sq mi

31.2

Median age

$62,969

Median household income

$26,149

Per capita income

$85,000

Median home value

$475

Median monthly rent

80.4%

Home ownership

6.3%

Poverty rate

6.1%

Unemployment

175

Housing units

20.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	171	32.5%
18 and over	355	67.5%
65 and over	93	17.7%
Median age	31.2 years

Race & ethnicity

White 50.4%

American Indian / Alaska Native 44.9%

Two or more races 3.6%

Hispanic or Latino 0.4%

Asian 0.4%

Other race 0.4%

Group	Count	%
White	266	50.4%
American Indian / Alaska Native	237	44.9%
Two or more races	19	3.6%
Hispanic or Latino	2	0.4%
Asian	2	0.4%
Other race	2	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	45.3%	50.2%	41.7%
$50k – $100k	43.8%	32.4%	33.8%
$100k – $200k	10.9%	14.7%	20.1%
Over $200k	0.0%	2.7%	4.4%

Under $10k 2.1%

$10k–$15k 4.8%

$15k–$25k 10.1%

$25k–$35k 3.2%

$35k–$50k 12.2%

$50k–$75k 22.8%

$75k–$100k 18.5%

$100k–$150k 23.3%

$150k–$200k 3.2%

Range	% of households
Under $10k	2.1%
$10k–$15k	4.8%
$15k–$25k	10.1%
$25k–$35k	3.2%
$35k–$50k	12.2%
$50k–$75k	22.8%
$75k–$100k	18.5%
$100k–$150k	23.3%
$150k–$200k	3.2%
Median income	$62,969

Housing

Home values

Under $50k 40.8%

$50k–$100k 14.5%

$100k–$150k 4.6%

$150k–$200k 9.2%

$200k–$300k 17.8%

$300k–$500k 2.0%

$1M+ 11.2%

Housing overview

Metric	Value
Median home value	$85,000
Median rent / month	$475
Owner occupied	80.4%
Renter occupied	19.6%
Vacant	10.8%
Single-family detached	90.1%
Large apartment buildings	0.0%
Mobile homes	6.6%
Median rooms	5.9
Avg household size (owned)	2.97

Year built

Era	%
2020 or later	0.0%
2010–2019	12.7%
2000–2009	1.9%
1990–1999	11.3%
1980–1989	3.8%
1970–1979	9.9%
1960–1969	8.0%
1950–1959	2.8%
1940–1949	5.2%
1939 or earlier	44.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	8.5%
2 bedrooms	18.9%
3 bedrooms	52.8%
4 bedrooms	8.0%
5+ bedrooms	11.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.5%
1 vehicle	20.1%
2 vehicles	43.4%
3 or more	36.0%

Heating fuel

Fuel type	%
Utility gas	1.1%
Electricity	23.3%
Propane / LP gas	52.9%
Fuel oil	22.8%

Households & families

Household type	Count	%
Married-couple family	122	64.6%
Cohabiting couple	15	7.9%
Male householder, no spouse	18	9.5%
Female householder, no spouse	34	18.0%
Households with children under 18	68	36.0%
Households with seniors (65+)	63	33.3%
Average household size	2.78

Marital status

Status	Male	Female
Never married	15.7%	14.1%
Married	73.0%	62.4%
Separated	0.5%	0.0%
Widowed	1.6%	8.8%
Divorced	9.2%	14.7%

Education

Less than 9th grade 1.5%

Some HS, no diploma 3.0%

HS graduate 31.2%

Some college, no degree 17.1%

Associate's degree 26.7%

Bachelor's degree 15.3%

Graduate / professional 5.1%

Metric	%
HS diploma or higher	95.5%
Bachelor's or higher	20.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	5	6.8%
Kindergarten	4	5.5%
Elementary school	57	78.1%
High school	7	9.6%
College / grad school	0	0.0%

Employment

Industry of employment

Education & healthcare 21.6%

Agriculture & mining 20.8%

Arts, food & hospitality 19.5%

Wholesale trade 13.4%

Construction 4.3%

Finance & real estate 4.3%

Manufacturing 3.9%

Public administration 3.5%

Information 2.6%

Transportation & utilities 2.2%

Retail trade 1.3%

Professional & management 1.3%

Other services 1.3%

Occupation

Category	%
Management, business & arts	39.0%
Service	21.6%
Sales & office	8.2%
Natural resources & construction	24.2%
Production & transportation	6.9%

Employment type

Type	%
Private sector	55.8%
Government	22.5%
Self-employed	14.7%
Unpaid family workers	6.9%

Commute

Method	%
Drive alone	76.5%
Carpool	6.1%
Public transit	0.0%
Walk	2.2%
Work from home	15.2%
Other means	0.0%
Avg commute (minutes)	18.0

Poverty

All people 6.3%

Under 18 years 3.2%

18 and over 7.6%

Married-couple families 5.7%

Female-led households 7.1%

Income support

Source	% of households
Social Security	37.0%
Retirement income	11.1%
Supplemental Security	3.7%
Cash public assistance	0.5%
Food stamps / SNAP	10.1%

Health indicators

Condition	%
Obesity	37.5%
High blood pressure	36.3%
High cholesterol	31.7%
Diabetes	12.0%
Heart disease	9.1%
Stroke	4.2%
Asthma	9.6%
Arthritis	27.3%
Kidney disease	3.8%
Pulmonary disease	7.8%
Cancer	8.2%

Behavior / access	%
Smoking	19.7%
Binge drinking	18.7%
No physical activity	26.9%
Less than 7 hrs sleep	29.0%
Depression	15.3%
Fair or poor health	14.6%
Poor mental health	11.3%
Poor physical health	10.9%
No health insurance	11.9%
Visited doctor (checkup)	77.5%
Visited dentist	66.8%
Cholesterol screening	89.2%
Teeth loss	16.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	16	4.5%

Disability	%
Any disability	9.1%
Under 18	9.4%
18–64 years	6.9%
65 and over	15.1%

Health insurance coverage

Type	%
Private insurance	80.8%
Public insurance	27.0%
No insurance	9.5%
Uninsured under 19	3.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	436	82.9%
Spanish	2	0.5%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	2	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	508	96.6%
Born in same state	508	96.6%
Born in different state	327	62.2%
Foreign born	0	0.0%
Naturalized citizen	18	3.4%
Not a US citizen	1	5.6%

Ancestry

Ancestry	Count	%
Polish	112	21.3%
French	8	1.5%
Italian	4	0.8%

Ancestry	Count	%
Dutch	2	0.4%
Arab	2	0.4%
English	1	0.2%

Technology access

Metric	% of households
Computer access	35.9%
Internet access	85.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 57255

What city is ZIP code 57255 in?

ZIP code 57255 is primarily assigned to New Effington, South Dakota.

What county is ZIP code 57255 in?

ZIP code 57255 falls within Roberts County, South Dakota.

Is ZIP code 57255 family-oriented?

33% of residents in ZIP code 57255 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 57255 mostly owner-occupied?

80% of occupied units in ZIP code 57255 are owner-occupied, well above the national average.

Does ZIP code 57255 have a large retiree population?

37% of households in ZIP code 57255 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 57255?

The median home value in ZIP code 57255 is $85,000.

What timezone is ZIP code 57255 in?

ZIP code 57255 observes the CST timezone.