57311 ZIP Code — Alexandria, SD

Hanson County, South Dakota

ZIP code 57311 is located in Alexandria, South Dakota, within Hanson County. It covers approximately 188.35 square miles and serves a population of 1,699 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

About ZIP code 57311

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 $173,700. Owner-occupancy is high at 85%, well above the national average.

Median household income is $93,750. The poverty rate of 3% is below the national average. 32% 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 21 minutes is near the national average.

College attainment at 21% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 57311 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,699

population

188.35

sq mi land

Standard

ZIP type

Central (CT)

timezone

57311 ZIP code map

Cities in ZIP code 57311

Below are the cities the US Postal Service accepts for ZIP code 57311. Using any city not on this list may result in mail delivery delays.

City	Status
Alexandria	Acceptable
Alexandria	Preferred

Nearby ZIP codes

57340 Fulton (8.9 mi) 57374 Spencer (9.9 mi) 57332 Emery (11.4 mi) 57301 Mitchell (14.4 mi) 57319 Bridgewater (15.1 mi) 57334 Ethan (16.2 mi) 57321 Canova (16.8 mi) 57058 Salem (19.9 mi)

Demographics updated 05/2026

Population
Total population	1,699
Population density	9 / sq mi
State FIPS	46
County FIPS	061

Geography
Land area	188.35 sq mi
Water area	0.22 sq mi
Latitude	43.6682
Longitude	-97.7467
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	41.3%	42.3%	41.7%
$50k – $100k	28.5%	31.8%	33.8%
$100k – $200k	26.0%	22.1%	20.1%
Over $200k	4.2%	3.9%	4.4%

Demographics & statistics

1,699

Population

People per sq mi

37.4

Median age

$93,750

Median household income

$35,548

Per capita income

$173,700

Median home value

$812

Median monthly rent

85.1%

Home ownership

3.1%

Poverty rate

0.7%

Unemployment

497

Housing units

20.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

104

35–44

100

45–54

55–59

60–64

127

65–74

124

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	471	27.7%
18 and over	1,228	72.3%
65 and over	290	17.1%
Median age	37.4 years

Race & ethnicity

White 88.4%

Two or more races 8%

Hispanic or Latino 3.6%

Group	Count	%
White	1,558	88.4%
Two or more races	141	8%
Hispanic or Latino	64	3.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.3%	42.3%	41.7%
$50k – $100k	28.5%	31.8%	33.8%
$100k – $200k	26.0%	22.1%	20.1%
Over $200k	4.2%	3.9%	4.4%

Under $10k 1.4%

$10k–$15k 0.4%

$15k–$25k 2.8%

$25k–$35k 0.8%

$35k–$50k 11.5%

$50k–$75k 17.7%

$75k–$100k 20.9%

$100k–$150k 30.4%

$150k–$200k 9.1%

$200k+ 5.0%

Range	% of households
Under $10k	1.4%
$10k–$15k	0.4%
$15k–$25k	2.8%
$25k–$35k	0.8%
$35k–$50k	11.5%
$50k–$75k	17.7%
$75k–$100k	20.9%
$100k–$150k	30.4%
$150k–$200k	9.1%
$200k+	5.0%
Median income	$93,750

Housing

Home values

Under $50k 3.3%

$50k–$100k 7.9%

$100k–$150k 25.7%

$150k–$200k 22.2%

$200k–$300k 28.5%

$300k–$500k 7.2%

$500k–$1M 5.1%

Housing overview

Metric	Value
Median home value	$173,700
Median rent / month	$812
Owner occupied	85.1%
Renter occupied	14.9%
Vacant	12.1%
Single-family detached	91.8%
Large apartment buildings	0.0%
Mobile homes	2.6%
Median rooms	6.3
Avg household size (owned)	3.41

Year built

Era	%
2020 or later	0.3%
2010–2019	6.6%
2000–2009	13.8%
1990–1999	7.2%
1980–1989	6.3%
1970–1979	12.4%
1960–1969	6.1%
1950–1959	8.9%
1940–1949	4.4%
1939 or earlier	33.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.4%
2 bedrooms	20.3%
3 bedrooms	42.3%
4 bedrooms	21.2%
5+ bedrooms	11.9%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	11.5%
2 vehicles	26.8%
3 or more	58.8%

Heating fuel

Fuel type	%
Utility gas	36.2%
Electricity	31.0%
Propane / LP gas	27.0%
Fuel oil	3.2%
Wood	1.4%
No fuel used	1.2%

Households & families

Household type	Count	%
Married-couple family	376	74.8%
Cohabiting couple	12	2.4%
Male householder, no spouse	52	10.3%
Female householder, no spouse	63	12.5%
Households with children under 18	172	34.2%
Households with seniors (65+)	159	31.6%
Average household size	3.32

Marital status

Status	Male	Female
Never married	37.2%	34.3%
Married	59.2%	58.9%
Separated	0.0%	1.1%
Widowed	2.6%	2.3%
Divorced	1.0%	3.4%

Education

Less than 9th grade 4.9%

Some HS, no diploma 0.9%

HS graduate 28.6%

Some college, no degree 17.9%

Associate's degree 27.2%

Bachelor's degree 14.7%

Graduate / professional 5.8%

Metric	%
HS diploma or higher	94.2%
Bachelor's or higher	20.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	18	3.9%
Kindergarten	14	3.0%
Elementary school	212	45.6%
High school	125	26.9%
College / grad school	96	20.6%

Employment

Industry of employment

Education & healthcare 18.3%

Construction 14.3%

Finance & real estate 9.8%

Agriculture & mining 9.4%

Manufacturing 8.7%

Retail trade 8.5%

Professional & management 6.9%

Arts, food & hospitality 5.1%

Other services 4.7%

Public administration 4.2%

Transportation & utilities 3.6%

Wholesale trade 3.2%

Information 3.1%

Occupation

Category	%
Management, business & arts	47.4%
Service	6.9%
Sales & office	23.6%
Natural resources & construction	13.0%
Production & transportation	9.1%

Employment type

Type	%
Private sector	71.2%
Government	17.0%
Self-employed	11.6%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	79.7%
Carpool	5.5%
Public transit	0.0%
Walk	5.1%
Work from home	8.4%
Other means	1.4%
Avg commute (minutes)	20.9

Poverty

All people 3.1%

Under 18 years 0.0%

18 and over 4.3%

Married-couple families 2.7%

Female-led households 0.0%

Income support

Source	% of households
Social Security	32.0%
Retirement income	10.3%
Supplemental Security	1.4%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	33.7%
High blood pressure	28.2%
High cholesterol	28.0%
Diabetes	7.9%
Heart disease	5.8%
Stroke	2.6%
Asthma	8.8%
Arthritis	21.6%
Kidney disease	2.5%
Pulmonary disease	5.4%
Cancer	6.6%

Behavior / access	%
Smoking	18.0%
Binge drinking	20.9%
No physical activity	21.4%
Less than 7 hrs sleep	27.9%
Depression	16.0%
Fair or poor health	10.1%
Poor mental health	11.1%
Poor physical health	8.1%
No health insurance	11.7%
Visited doctor (checkup)	73.4%
Visited dentist	69.3%
Cholesterol screening	88.1%
Teeth loss	12.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	80	6.5%

Disability	%
Any disability	3.8%
Under 18	1.5%
18–64 years	3.9%
65 and over	7.6%

Health insurance coverage

Type	%
Private insurance	84.6%
Public insurance	25.2%
No insurance	2.8%
Uninsured under 19	4.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,567	92.2%
Spanish	4	0.3%
Other Indo-European	0	0.0%
Asian & Pacific Islander	4	0.3%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,695	99.8%
Born in same state	1,679	98.8%
Born in different state	1,414	83.2%
Foreign born	16	0.9%
Naturalized citizen	4	0.2%
Not a US citizen	4	100.0%

Ancestry

Ancestry	Count	%
Arab	227	13.4%
Italian	134	7.9%
French	129	7.6%

Ancestry	Count	%
Polish	120	7.1%
Dutch	10	0.6%
English	7	0.4%

Technology access

Metric	% of households
Computer access	29.6%
Internet access	97.4%

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

Frequently asked questions about ZIP code 57311

What city is ZIP code 57311 in?

ZIP code 57311 is primarily assigned to Alexandria, South Dakota.

What county is ZIP code 57311 in?

ZIP code 57311 falls within Hanson County, South Dakota.

Is ZIP code 57311 mostly owner-occupied?

85% of occupied units in ZIP code 57311 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 57311?

The median home value in ZIP code 57311 is $173,700.

What is the population of ZIP code 57311?

ZIP code 57311 has an estimated population of 1,699 residents, with a density of 9 people per square mile.

What is the median household income in ZIP code 57311?

The median household income in ZIP code 57311 is $93,750, above the national median of ~$75,000.

What timezone is ZIP code 57311 in?

ZIP code 57311 observes the CST timezone.