PlainZIP

Madison, SD · standard

ZIP Code 57042

Lake County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

8,415
16/sq mi
$71,868
Median income
$228,200
Median home value
36.6%
Bachelor's or higher

The verdict

Madison pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 50%
household income, US ZIPs
Top 48%
home value, US ZIPs
16
people per sq mi
67%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57042 against every reporting US ZIP.

ZIP code 57042 is a mid-sized community (a standard USPS delivery area) in Madison, Lake County, South Dakota, home to 8,415 residents across 532.6 square miles, a density of 16 people per square mile, in the Chicago time zone.

ZIP 57042 lands in the middle-income range, with a median household income of $71,868 (6% below the South Dakota average), while per-capita income is $39,812. Poverty here runs at 8.1%, with unemployment measured at 3.8%. Median home value sits at $228,200 (19% above the state average), median rent at $963 a month, and owner-occupancy at 67.4%.

A solid share of residents have a four-year degree: 36.6% of adults hold a bachelor's degree or higher, the median age is 43.1, and the average commute is 13 minutes. Beyond these figures, 1 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Lake County, letting you compare 57042 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 57042

Top 5 sectors by establishment count in Madison, SD

Which industries have the most business establishments in ZIP 57042.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 57042, Madison, SD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

8,415

Population

532.6

Area (sq mi)

16

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 57042?

43.1

Median Age

51.1%

Male

48.9%

Female

2.3%

Foreign-Born

White 95.0%
African American 1.0%
Asian 1.0%
American Indian or Alaska Native 0.7%
Native Hawaiian or Pacific Islander 0.2%
Two or More Ethnicities 1.9%
Hispanic or Latino 3.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$71,868

Median Household Income

-6% vs state

$39,812

Per Capita Income

8.1%

Poverty Rate

3.8%

Unemployment Rate

12.6 min

Mean Commute Time

How ZIP 57042 ranks nationally

Madison, SD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$71,868 Top 50% higher than 50% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 59.5%
Bachelor's Degree or Higher 36.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

3,800

Total Housing Units

3,331

Occupied Units

469

Vacant Units

2.17

Avg Household Size

Occupancy Type

Owner 67.4%
Renter 32.6%

$228,200

Median Home Value

+19% vs state

$963

Median Rent

1974

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+10.9%

YoY Change (2024)

299

HPI Index (2000 = 100)

+199%

Total Change Since 2000

Home values in ZIP 57042 have increased 10.9% over the past year (2024). Since 2000, this ZIP has seen +199% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.9% 190
2021 +10.6% 210
2022 +12.7% 236
2023 +14.1% 270
2024 +10.9% 299

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 272 business establishments in ZIP 57042, employing approximately 3,517 people with a combined annual payroll of $182,885,000.

272

Businesses

3,517

Employees

$182.9M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Retail trade 35 12.9%
Accommodation and food services 28 10.3%
Construction 26 9.6%
Other services (except public administration) 26 9.6%
Finance and insurance 25 9.2%
Professional, scientific, and technical services 24 8.8%
Health care and social assistance 23 8.5%
Manufacturing 22 8.1%
Wholesale trade 15 5.5%
Transportation and warehousing 9 3.3%
Administrative and support and waste management and remediation services 9 3.3%
Real estate and rental and leasing 8 2.9%
Information 6 2.2%
Arts, entertainment, and recreation 5 1.8%
Educational services 4 1.5%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 57042 vs 57054 →

ZIP Code City Population Distance
57054 Ramona, SD 502 11.6 mi

More ZIP Codes in Lake County

57075 standard
Wentworth, SD
Pop: 893
57016 standard
Chester, SD
Pop: 693
57076 standard
Winfred, SD
Pop: 521
57054 standard
Ramona, SD
Pop: 502
57050 standard
Nunda, SD
Pop: 191
57057 standard
Rutland, SD
Pop: 152

Related Areas

Lake County Madison, SD South Dakota

Frequently Asked Questions

What county is ZIP code 57042 in? ▼
ZIP code 57042 (Madison) is located in Lake County, South Dakota. Lake County contains multiple ZIP codes, see the full list at /counties/lake-sd.
What is the population of ZIP code 57042? ▼
ZIP code 57042 in Madison, SD has a population of 8,415 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57042? ▼
The median household income in ZIP 57042 is $71,868, which is 6% below the national average of $76,288.
What is the average home value in ZIP 57042? ▼
The median home value in ZIP 57042 is $228,200, which is 18% below the national average of $278,155.
What is the demographic makeup of ZIP 57042? ▼
The largest racial group in ZIP 57042 is White at 95.0%. Hispanic or Latino residents make up 3.4% of the population.
How many businesses are in ZIP code 57042? ▼
ZIP code 57042 has 272 business establishments employing approximately 3,517 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 57042? ▼
The top industries by establishment count in ZIP 57042 are: Retail trade (35), Accommodation and food services (28), Construction (26). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 57042? ▼
According to the FHFA House Price Index, home values in ZIP 57042 increased by 10.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 199%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 57042? ▼
In ZIP code 57042, 59.5% of residents aged 25+ have a high school diploma or higher, and 36.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 57042? ▼
The mean commute time for workers in ZIP code 57042 is 12.6 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 57042? ▼
In ZIP code 57042, approximately 67.4% of occupied housing units are owner-occupied and 32.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57042? ▼
The poverty rate in ZIP code 57042 is 8.1% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.