57042 ZIP Code — Madison, SD
Lake County, South Dakota
ZIP code 57042 is located in Madison, South Dakota, within Lake County. It covers approximately 193.22 square miles and serves a population of 8,178 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.
About ZIP code 57042
The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $173,400. Owner-occupancy sits near the national average at 67%.
Median household income is $70,046. 38% 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 14 minutes is near the national average.
Educational attainment is near the national average, with 37% of residents holding a bachelor's degree or higher.
8,178
population
193.22
sq mi land
Standard
ZIP type
Central (CT)
timezone
57042 ZIP code map
Cities in ZIP code 57042
Below are the cities the US Postal Service accepts for ZIP code 57042. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Madison | Acceptable |
| Madison | Preferred |
Nearby ZIP codes
57075 Wentworth (8.3 mi)
57016 Chester (8.5 mi)
57076 Winfred (10 mi)
57054 Ramona (12.3 mi)
57050 Nunda (14.1 mi)
57018 Colton (14.8 mi)
57017 Colman (15.5 mi)
57048 Montrose (17.6 mi)
57058 Salem (18.5 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 8,178 |
| Population density | 42 / sq mi |
| State FIPS | 46 |
| County FIPS | 079 |
| Geography | |
|---|---|
| Land area | 193.22 sq mi |
| Water area | 3.71 sq mi |
| Latitude | 43.9711 |
| Longitude | -97.1391 |
| 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 | 36.3% | 34.6% | 41.7% |
| $50k – $100k | 41.8% | 39.3% | 33.8% |
| $100k – $200k | 18.1% | 21.7% | 20.1% |
| Over $200k | 3.8% | 4.4% | 4.4% |
Demographics & statistics
8,178
Population
42
People per sq mi
42.4
Median age
$70,046
Median household income
$37,243
Per capita income
$173,400
Median home value
$813
Median monthly rent
66.8%
Home ownership
11.6%
Poverty rate
1.9%
Unemployment
2,654
Housing units
36.9%
Bachelor's or higher
Age distribution
Male
Female
238
Under 5
230
247
5–9
237
254
10–14
244
341
15–19
328
343
20–24
330
392
25–34
377
427
35–44
410
366
45–54
352
334
55–59
321
299
60–64
287
610
65–74
588
196
75–84
189
121
85+
117
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 1,713 | 20.9% |
| 18 and over | 6,465 | 79.1% |
| 65 and over | 1,821 | 22.3% |
| Median age | 42.4 years | |
Race & ethnicity
White
94.8%
Two or more races
2.8%
American Indian / Alaska Native
1.6%
Hispanic or Latino
0.4%
Black or African American
0.3%
| Group | Count | % |
|---|---|---|
| White | 7,782 | 94.8% |
| Two or more races | 229 | 2.8% |
| American Indian / Alaska Native | 134 | 1.6% |
| Hispanic or Latino | 35 | 0.4% |
| Black or African American | 28 | 0.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 36.3% | 34.6% | 41.7% |
| $50k – $100k | 41.8% | 39.3% | 33.8% |
| $100k – $200k | 18.1% | 21.7% | 20.1% |
| Over $200k | 3.8% | 4.4% | 4.4% |
Under $10k
6.6%
$10k–$15k
1.7%
$15k–$25k
12.8%
$25k–$35k
4.8%
$35k–$50k
8.3%
$50k–$75k
20.2%
$75k–$100k
11.4%
$100k–$150k
22.5%
$150k–$200k
5.3%
$200k+
6.6%
| Range | % of households |
|---|---|
| Under $10k | 6.6% |
| $10k–$15k | 1.7% |
| $15k–$25k | 12.8% |
| $25k–$35k | 4.8% |
| $35k–$50k | 8.3% |
| $50k–$75k | 20.2% |
| $75k–$100k | 11.4% |
| $100k–$150k | 22.5% |
| $150k–$200k | 5.3% |
| $200k+ | 6.6% |
| Median income | $70,046 |
Housing
Home values
Under $50k
7.1%
$50k–$100k
14.9%
$100k–$150k
15.7%
$150k–$200k
18.5%
$200k–$300k
22.4%
$300k–$500k
14.7%
$500k–$1M
5.8%
$1M+
1.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $173,400 |
| Median rent / month | $813 |
| Owner occupied | 66.8% |
| Renter occupied | 33.2% |
| Vacant | 13.9% |
| Single-family detached | 68.1% |
| Large apartment buildings | 7.9% |
| Mobile homes | 6.2% |
| Median rooms | 5.8 |
| Avg household size (owned) | 2.62 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 4.3% |
| 2000–2009 | 8.4% |
| 1990–1999 | 15.0% |
| 1980–1989 | 8.5% |
| 1970–1979 | 13.6% |
| 1960–1969 | 14.3% |
| 1950–1959 | 7.2% |
| 1940–1949 | 4.2% |
| 1939 or earlier | 24.6% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.6% |
| 1 bedroom | 13.3% |
| 2 bedrooms | 27.1% |
| 3 bedrooms | 32.3% |
| 4 bedrooms | 19.9% |
| 5+ bedrooms | 6.9% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.3% |
| 1 vehicle | 27.7% |
| 2 vehicles | 39.7% |
| 3 or more | 29.4% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 59.2% |
| Electricity | 26.9% |
| Propane / LP gas | 9.4% |
| Fuel oil | 1.2% |
| Wood | 0.2% |
| No fuel used | 2.5% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 1,504 | 47.0% |
| Cohabiting couple | 251 | 7.8% |
| Male householder, no spouse | 656 | 20.5% |
| Female householder, no spouse | 787 | 24.6% |
| Households with children under 18 | 770 | 24.1% |
| Households with seniors (65+) | 1,156 | 36.1% |
| Average household size | 2.39 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 38.5% | 26.8% |
| Married | 49.9% | 45.9% |
| Separated | 2.0% | 4.1% |
| Widowed | 1.0% | 13.4% |
| Divorced | 8.6% | 9.7% |
Education
Less than 9th grade
1.1%
Some HS, no diploma
5.3%
HS graduate
24.7%
Some college, no degree
20.8%
Associate's degree
11.2%
Bachelor's degree
25.9%
Graduate / professional
11.0%
| Metric | % |
|---|---|
| HS diploma or higher | 93.6% |
| Bachelor's or higher | 36.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 150 | 6.7% |
| Kindergarten | 119 | 5.3% |
| Elementary school | 811 | 36.4% |
| High school | 327 | 14.7% |
| College / grad school | 822 | 36.9% |
Employment
Industry of employment
Education & healthcare
29.2%
Retail trade
14.0%
Manufacturing
10.9%
Arts, food & hospitality
8.9%
Transportation & utilities
8.0%
Agriculture & mining
5.8%
Public administration
5.8%
Professional & management
4.6%
Other services
4.6%
Construction
4.2%
Finance & real estate
2.4%
Information
0.9%
Wholesale trade
0.7%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 36.6% |
| Service | 19.1% |
| Sales & office | 23.3% |
| Natural resources & construction | 8.8% |
| Production & transportation | 12.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 65.3% |
| Government | 24.4% |
| Self-employed | 10.3% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 83.1% |
| Carpool | 4.5% |
| Public transit | 0.6% |
| Walk | 4.1% |
| Work from home | 6.7% |
| Other means | 1.0% |
| Avg commute (minutes) | 13.5 |
Poverty
All people
11.6%
Under 18 years
17.0%
18 and over
10.0%
Married-couple families
2.4%
Female-led households
9.3%
Income support
| Source | % of households |
|---|---|
| Social Security | 37.8% |
| Retirement income | 23.1% |
| Supplemental Security | 6.2% |
| Cash public assistance | 2.8% |
| Food stamps / SNAP | 5.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 31.9% |
| High blood pressure | 28.7% |
| High cholesterol | 28.5% |
| Diabetes | 8.6% |
| Heart disease | 6.8% |
| Stroke | 3.1% |
| Asthma | 9.0% |
| Arthritis | 23.0% |
| Kidney disease | 3.0% |
| Pulmonary disease | 5.9% |
| Cancer | 7.2% |
| Behavior / access | % |
|---|---|
| Smoking | 16.6% |
| Binge drinking | 20.7% |
| No physical activity | 23.1% |
| Less than 7 hrs sleep | 27.3% |
| Depression | 15.3% |
| Fair or poor health | 11.2% |
| Poor mental health | 10.9% |
| Poor physical health | 8.7% |
| No health insurance | 11.9% |
| Visited doctor (checkup) | 74.3% |
| Visited dentist | 67.7% |
| Cholesterol screening | 86.5% |
| Teeth loss | 14.9% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 407 | 6.3% |
| Disability | % |
|---|---|
| Any disability | 13.0% |
| Under 18 | 3.6% |
| 18–64 years | 10.2% |
| 65 and over | 30.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 74.0% |
| Public insurance | 37.9% |
| No insurance | 4.3% |
| Uninsured under 19 | 1.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 7,710 | 94.3% |
| Spanish | 18 | 0.2% |
| Other Indo-European | 10 | 0.1% |
| Asian & Pacific Islander | 8 | 0.1% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 8,108 | 99.1% |
| Born in same state | 8,096 | 99.0% |
| Born in different state | 5,593 | 68.4% |
| Foreign born | 12 | 0.1% |
| Naturalized citizen | 70 | 0.9% |
| Not a US citizen | 49 | 70.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Polish | 1,692 | 20.7% |
| Italian | 873 | 10.7% |
| French | 687 | 8.4% |
| Arab | 616 | 7.5% |
| Ancestry | Count | % |
|---|---|---|
| English | 260 | 3.2% |
| Dutch | 35 | 0.4% |
| German | 19 | 0.2% |
| Irish | 14 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 39.1% |
| Internet access | 96.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57042
What city is ZIP code 57042 in?
ZIP code 57042 is primarily assigned to Madison, South Dakota.
What county is ZIP code 57042 in?
ZIP code 57042 falls within Lake County, South Dakota.
Does ZIP code 57042 have a large retiree population?
38% of households in ZIP code 57042 receive Social Security income, suggesting a significant retiree or disability population.
What is the typical home value in ZIP code 57042?
The median home value in ZIP code 57042 is $173,400.
What is the population of ZIP code 57042?
ZIP code 57042 has an estimated population of 8,178 residents, with a density of 42 people per square mile.
What is the median household income in ZIP code 57042?
The median household income in ZIP code 57042 is $70,046, below the national median of ~$75,000.
What timezone is ZIP code 57042 in?
ZIP code 57042 observes the CST timezone.