ZIP Code Tabulation Area · South Dakota

ZIP Code 57242: Hamlin County, SD

ZIP Code 57242 (Hamlin County, South Dakota) has an estimated 320 residents in 102 households. The median household income is $113,958, the median home value is $177,100 and the median gross rent is $681/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 4 figures for this ZIP (median age, bachelor's or higher, owner-occupied, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

320

Margin of error ±126

Median household income

$113,958

Margin of error ±$16,554

Median home value

$177,100

Margin of error ±$49,060

Median gross rent

$681/mo

Margin of error ±$15

Median age

33.7 yrs*

Margin of error ±18.4 yrs· estimate has a large margin of error

Mean travel time to work

19.9 min*

Margin of error ±11.4 min· estimate has a large margin of error

How ZIP 57242 compares with South Dakota and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 5724233.7 yrs*South Dakota38.0 yrsUnited States38.9 yrs

Median household income

ZIP 57242$113,958South Dakota$75,081United States$80,734

Per capita income

ZIP 57242$33,848South Dakota$40,550United States$44,673

Poverty rate

ZIP 572422.2%South Dakota11.9%United States12.5%

Unemployment rate

ZIP 572420.0%South Dakota2.9%United States5.2%

Bachelor's degree or higher

ZIP 5724224.3%*South Dakota31.9%United States35.7%

Median home value

ZIP 57242$177,100South Dakota$257,400United States$332,700

Median gross rent

ZIP 57242$681/moSouth Dakota$946/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5724289.2%*South Dakota68.6%United States65.2%

Mean travel time to work

ZIP 5724219.9 min*South Dakota17.8 minUnited States26.4 min

Worked from home

ZIP 572425.8%South Dakota9.7%United States15.1%

All figures for ZIP 57242

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 57242 — ACS 2020–2024 5-year estimates
Measure	ZIP 57242	Margin of error	South Dakota	United States
Total population	320	±126	907,428	334,922,499
Median age	33.7 yrs*	±18.4 yrs	38.0 yrs	38.9 yrs
Households	102	±34	365,544	129,227,496
Median household income	$113,958	±$16,554	$75,081	$80,734
Per capita income	$33,848	±$9,283	$40,550	$44,673
Poverty rate	2.2%	±1.3 pts	11.9%	12.5%
Unemployment rate	0.0%	±5.5 pts	2.9%	5.2%
Bachelor's degree or higher	24.3%*	±14.1 pts	31.9%	35.7%
Median home value	$177,100	±$49,060	$257,400	$332,700
Median gross rent	$681/mo	±$15	$946/mo	$1,413/mo
Owner-occupied homes	89.2%*	±12.7 pts	68.6%	65.2%
Mean travel time to work	19.9 min*	±11.4 min	17.8 min	26.4 min
Worked from home	5.8%	±8.5 pts	9.7%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 57242
Group	ZIP 57242	South Dakota	United States
White alone, not Hispanic or Latino	100.0%	79.8%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	2.1%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	7.1%	0.5%
Asian alone, not Hispanic or Latino	0.0%	1.4%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.3%	0.6%
Two or more races, not Hispanic or Latino	0.0%	4.4%	4.3%
Hispanic or Latino (of any race)	0.0%	4.8%	19.3%

Where ZIP 57242 is

State: South Dakota
Main county: Hamlin County— also overlaps Codington County
Largest overlapping place: Hazel (less than 1% of the ZIP's land area)
Land area: 86.67 sq mi· about 4 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Hamlin County

57221 Hamlin County, SD 57223 Hamlin County, SD 57241 Hamlin County, SD 57248 Hamlin County, SD

See every ZIP code in South Dakota, or compare ZIP 57242 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.