57755 ZIP Code — Ludlow, SD

Harding County, South Dakota

ZIP code 57755 is located in Ludlow, South Dakota, within Harding County. It covers approximately 254.67 square miles and serves a population of 130 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

130

population

254.67

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

57755 ZIP code map

Cities in ZIP code 57755

Below are the cities the US Postal Service accepts for ZIP code 57755. Using any city not on this list may result in mail delivery delays.

City	Status
Ludlow	Acceptable

Demographics updated 06/2026

Population
Total population	130
Population density	1 / sq mi
State FIPS	46
County FIPS	063

Geography
Land area	254.67 sq mi
Water area	0.30 sq mi
Latitude	45.8224
Longitude	-103.3713
Timezone	Mountain (MT)
Area code	605

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.8%	28.0%	41.7%
$50k – $100k	31.0%	53.5%	33.8%
$100k – $200k	45.2%	17.7%	20.1%
Over $200k	0.0%	0.8%	4.4%

Demographics & statistics

130

Population

People per sq mi

28.9

Median age

$96,250

Median household income

$44,022

Per capita income

$54,000

Median home value

Median monthly rent

62.2%

Home ownership

0.0%

Poverty rate

0.0%

Unemployment

Housing units

13.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

20–24

25–34

45–54

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	34	26.2%
18 and over	96	73.8%
65 and over	10	7.7%
Median age	28.9 years

Race & ethnicity

White 66.9%

Two or more races 33.1%

Group	Count	%
White	87	66.9%
Two or more races	43	33.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.8%	28.0%	41.7%
$50k – $100k	31.0%	53.5%	33.8%
$100k – $200k	45.2%	17.7%	20.1%
Over $200k	0.0%	0.8%	4.4%

$35k–$50k 8.9%

$50k–$75k 37.8%

$75k–$100k 6.7%

$100k–$150k 20.0%

$150k–$200k 20.0%

$200k+ 6.7%

Range	% of households
$35k–$50k	8.9%
$50k–$75k	37.8%
$75k–$100k	6.7%
$100k–$150k	20.0%
$150k–$200k	20.0%
$200k+	6.7%
Median income	$96,250

Housing

Home values

Under $50k 42.9%

$50k–$100k 25.0%

$200k–$300k 17.9%

$300k–$500k 14.3%

Housing overview

Metric	Value
Median home value	$54,000
Median rent / month	$0
Owner occupied	62.2%
Renter occupied	37.8%
Vacant	21.1%
Single-family detached	66.7%
Large apartment buildings	0.0%
Mobile homes	33.3%
Median rooms	6.3
Avg household size (owned)	2.18

Year built

Era	%
2020 or later	0.0%
2010–2019	8.8%
2000–2009	5.3%
1990–1999	15.8%
1980–1989	15.8%
1970–1979	31.6%
1960–1969	0.0%
1950–1959	3.5%
1940–1949	3.5%
1939 or earlier	15.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	0.0%
3 bedrooms	71.9%
4 bedrooms	28.1%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	6.7%
2 vehicles	40.0%
3 or more	53.3%

Heating fuel

Fuel type	%
Electricity	4.4%
Propane / LP gas	84.4%
Wood	6.7%

Households & families

Household type	Count	%
Married-couple family	35	77.8%
Cohabiting couple	5	11.1%
Male householder, no spouse	2	4.4%
Female householder, no spouse	3	6.7%
Households with children under 18	22	48.9%
Households with seniors (65+)	7	15.6%
Average household size	2.89

Marital status

Status	Male	Female
Never married	14.6%	16.7%
Married	85.4%	72.9%
Separated	0.0%	0.0%
Widowed	0.0%	10.4%
Divorced	0.0%	0.0%

Education

Less than 9th grade 3.4%

Some HS, no diploma 0.0%

HS graduate 17.2%

Some college, no degree 63.2%

Associate's degree 2.3%

Bachelor's degree 13.8%

Graduate / professional 0.0%

Metric	%
HS diploma or higher	96.6%
Bachelor's or higher	13.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	7	100.0%
Elementary school	0	0.0%
High school	0	0.0%
College / grad school	0	0.0%

Employment

Industry of employment

Agriculture & mining 41.3%

Construction 38.8%

Manufacturing 6.3%

Wholesale trade 5.0%

Arts, food & hospitality 3.8%

Information 2.5%

Education & healthcare 2.5%

Occupation

Category	%
Management, business & arts	45.0%
Service	3.8%
Sales & office	16.3%
Natural resources & construction	35.0%
Production & transportation	0.0%

Employment type

Type	%
Private sector	65.0%
Government	2.5%
Self-employed	32.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	46.3%
Carpool	10.0%
Public transit	0.0%
Walk	0.0%
Work from home	43.8%
Other means	0.0%
Avg commute (minutes)	17.9

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	15.6%
Retirement income	6.7%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	32.9%
High blood pressure	29.7%
High cholesterol	30.2%
Diabetes	8.4%
Heart disease	6.0%
Stroke	2.7%
Asthma	8.8%
Arthritis	22.1%
Kidney disease	2.6%
Pulmonary disease	5.6%
Cancer	6.7%

Behavior / access	%
Smoking	17.5%
Binge drinking	21.2%
No physical activity	20.7%
Less than 7 hrs sleep	27.6%
Depression	15.5%
Fair or poor health	10.3%
Poor mental health	10.7%
Poor physical health	8.2%
No health insurance	11.2%
Visited doctor (checkup)	73.8%
Visited dentist	68.6%
Cholesterol screening	88.5%
Teeth loss	11.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	0	0.0%

Disability	%
Any disability	2.3%
Under 18	0.0%
18–64 years	0.0%
65 and over	30.0%

Health insurance coverage

Type	%
Private insurance	91.5%
Public insurance	7.7%
No insurance	6.9%
Uninsured under 19	11.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	103	79.2%
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)	130	100.0%
Born in same state	130	100.0%
Born in different state	85	65.4%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	32	24.6%
Polish	9	6.9%

Ancestry	Count	%
French	3	2.3%

Technology access

Metric	% of households
Computer access	34.6%
Internet access	95.6%

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

Frequently asked questions about ZIP code 57755

What city is ZIP code 57755 in?

ZIP code 57755 is primarily assigned to Ludlow, South Dakota.

What county is ZIP code 57755 in?

ZIP code 57755 falls within Harding County, South Dakota.

How educated is the population of ZIP code 57755?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the typical home value in ZIP code 57755?

The median home value in ZIP code 57755 is $54,000.

What is the population of ZIP code 57755?

ZIP code 57755 has an estimated population of 130 residents, with a density of 1 people per square mile.

What is the median household income in ZIP code 57755?

The median household income in ZIP code 57755 is $96,250, above the national median of ~$75,000.

What timezone is ZIP code 57755 in?

ZIP code 57755 observes the MST timezone.