57374 ZIP Code — Spencer, SD

Mccook County, South Dakota

ZIP code 57374 is located in Spencer, South Dakota, within Mccook County. It covers approximately 77.78 square miles and serves a population of 290 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

About ZIP code 57374

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 $157,800. Owner-occupancy is high at 92%, well above the national average.

Median household income is $72,750. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 24 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.

Overall, ZIP code 57374 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

290

population

77.78

sq mi land

Standard

ZIP type

Central (CT)

timezone

57374 ZIP code map

Cities in ZIP code 57374

Below are the cities the US Postal Service accepts for ZIP code 57374. Using any city not on this list may result in mail delivery delays.

City	Status
Spencer	Preferred

Nearby ZIP codes

57321 Canova (8.2 mi) 57311 Alexandria (9.9 mi) 57058 Salem (11 mi) 57340 Fulton (14 mi) 57319 Bridgewater (14.5 mi) 57332 Emery (17 mi) 57012 Canistota (18.1 mi) 57349 Howard (19.6 mi)

Demographics updated 05/2026

Population
Total population	290
Population density	4 / sq mi
State FIPS	46
County FIPS	087

Geography
Land area	77.78 sq mi
Water area	0.42 sq mi
Latitude	43.7540
Longitude	-97.5888
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	30.8%	34.4%	41.7%
$50k – $100k	41.3%	42.7%	33.8%
$100k – $200k	23.1%	16.5%	20.1%
Over $200k	4.9%	6.4%	4.4%

Demographics & statistics

290

Population

People per sq mi

48.8

Median age

$72,750

Median household income

$40,126

Per capita income

$157,800

Median home value

$400

Median monthly rent

91.7%

Home ownership

0.7%

Poverty rate

0.0%

Unemployment

149

Housing units

15.1%

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	77	26.6%
18 and over	213	73.4%
65 and over	61	21.0%
Median age	48.8 years

Race & ethnicity

White 98.3%

Two or more races 1.4%

American Indian / Alaska Native 0.3%

Group	Count	%
White	285	98.3%
Two or more races	4	1.4%
American Indian / Alaska Native	1	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.8%	34.4%	41.7%
$50k – $100k	41.3%	42.7%	33.8%
$100k – $200k	23.1%	16.5%	20.1%
Over $200k	4.9%	6.4%	4.4%

$10k–$15k 0.8%

$15k–$25k 11.6%

$25k–$35k 3.3%

$35k–$50k 10.7%

$50k–$75k 27.3%

$75k–$100k 4.1%

$100k–$150k 28.9%

$150k–$200k 5.8%

$200k+ 7.4%

Range	% of households
$10k–$15k	0.8%
$15k–$25k	11.6%
$25k–$35k	3.3%
$35k–$50k	10.7%
$50k–$75k	27.3%
$75k–$100k	4.1%
$100k–$150k	28.9%
$150k–$200k	5.8%
$200k+	7.4%
Median income	$72,750

Housing

Home values

Under $50k 18.0%

$50k–$100k 15.3%

$100k–$150k 9.9%

$150k–$200k 30.6%

$200k–$300k 15.3%

$300k–$500k 7.2%

$1M+ 3.6%

Housing overview

Metric	Value
Median home value	$157,800
Median rent / month	$400
Owner occupied	91.7%
Renter occupied	8.3%
Vacant	23.9%
Single-family detached	84.9%
Large apartment buildings	0.0%
Mobile homes	9.4%
Median rooms	6.9
Avg household size (owned)	2.46

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	14.5%
1990–1999	10.7%
1980–1989	0.0%
1970–1979	3.8%
1960–1969	0.0%
1950–1959	10.7%
1940–1949	2.5%
1939 or earlier	57.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.5%
2 bedrooms	28.9%
3 bedrooms	40.3%
4 bedrooms	22.0%
5+ bedrooms	6.3%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	17.4%
2 vehicles	28.1%
3 or more	48.8%

Heating fuel

Fuel type	%
Utility gas	36.4%
Electricity	20.7%
Propane / LP gas	26.4%
Fuel oil	5.8%
Wood	2.5%

Households & families

Household type	Count	%
Married-couple family	76	62.8%
Cohabiting couple	2	1.7%
Male householder, no spouse	29	24.0%
Female householder, no spouse	14	11.6%
Households with children under 18	44	36.4%
Households with seniors (65+)	48	39.7%
Average household size	2.40

Marital status

Status	Male	Female
Never married	12.4%	13.1%
Married	64.3%	73.7%
Separated	0.0%	0.0%
Widowed	6.2%	5.1%
Divorced	17.1%	8.1%

Education

Less than 9th grade 0.5%

Some HS, no diploma 0.5%

HS graduate 52.1%

Some college, no degree 20.3%

Associate's degree 11.5%

Bachelor's degree 10.9%

Graduate / professional 4.2%

Metric	%
HS diploma or higher	99.0%
Bachelor's or higher	15.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	3	5.2%
Elementary school	31	53.4%
High school	22	37.9%
College / grad school	2	3.4%

Employment

Industry of employment

Agriculture & mining 21.3%

Professional & management 19.7%

Education & healthcare 16.5%

Retail trade 11.0%

Manufacturing 8.7%

Construction 7.1%

Finance & real estate 6.3%

Transportation & utilities 5.5%

Information 2.4%

Arts, food & hospitality 1.6%

Occupation

Category	%
Management, business & arts	42.5%
Service	8.7%
Sales & office	26.0%
Natural resources & construction	16.5%
Production & transportation	6.3%

Employment type

Type	%
Private sector	59.8%
Government	11.8%
Self-employed	28.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	75.6%
Carpool	7.9%
Public transit	0.0%
Walk	7.9%
Work from home	8.7%
Other means	0.0%
Avg commute (minutes)	24.2

Poverty

All people 0.7%

Under 18 years 0.0%

18 and over 0.9%

Married-couple families 1.3%

Female-led households 0.0%

Income support

Source	% of households
Social Security	45.5%
Retirement income	14.0%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	2.5%

Health indicators

Condition	%
Obesity	35.9%
High blood pressure	35.5%
High cholesterol	33.5%
Diabetes	10.9%
Heart disease	8.2%
Stroke	3.6%
Asthma	8.9%
Arthritis	27.7%
Kidney disease	3.4%
Pulmonary disease	7.1%
Cancer	8.3%

Behavior / access	%
Smoking	19.0%
Binge drinking	17.6%
No physical activity	24.3%
Less than 7 hrs sleep	28.0%
Depression	15.8%
Fair or poor health	12.8%
Poor mental health	10.3%
Poor physical health	9.9%
No health insurance	11.7%
Visited doctor (checkup)	77.0%
Visited dentist	67.3%
Cholesterol screening	91.6%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	26	12.2%

Disability	%
Any disability	16.2%
Under 18	11.7%
18–64 years	6.6%
65 and over	45.9%

Health insurance coverage

Type	%
Private insurance	83.4%
Public insurance	30.0%
No insurance	3.4%
Uninsured under 19	2.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	277	95.5%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	289	99.7%
Born in same state	289	99.7%
Born in different state	242	83.4%
Foreign born	0	0.0%
Naturalized citizen	1	0.3%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	44	15.2%
Polish	20	6.9%
Arab	10	3.4%

Ancestry	Count	%
French	3	1%
Dutch	2	0.7%
English	1	0.3%

Technology access

Metric	% of households
Computer access	41.7%
Internet access	92.6%

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

Frequently asked questions about ZIP code 57374

What city is ZIP code 57374 in?

ZIP code 57374 is primarily assigned to Spencer, South Dakota.

What county is ZIP code 57374 in?

ZIP code 57374 falls within Hanson County, South Dakota.

Is ZIP code 57374 mostly owner-occupied?

92% of occupied units in ZIP code 57374 are owner-occupied, well above the national average.

Does ZIP code 57374 have a large retiree population?

46% of households in ZIP code 57374 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 57374 have a large veteran population?

12% of civilians in ZIP code 57374 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 57374?

The median home value in ZIP code 57374 is $157,800.

What timezone is ZIP code 57374 in?

ZIP code 57374 observes the CST timezone.