PlainZIP

Delmont, SD · standard

ZIP Code 57330

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

625
2/sq mi
$71,563
Median income
$143,800
Median home value
40.8%
Bachelor's or higher

The verdict

Delmont pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.

49th pct
household income, US ZIPs
24th pct
home value, US ZIPs
2
people per sq mi
87%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57330 against every reporting US ZIP.

ZIP code 57330 is a sparsely populated ZIP (a standard USPS delivery area) in Delmont, Douglas County, South Dakota, home to just 625 residents across 328.9 square miles, a density of 2 people per square mile, in the Chicago time zone.

ZIP 57330 lands in the middle-income range, with a median household income of $71,563 (7% below the South Dakota average), while per-capita income is $29,329. 23.5% of residents live below the poverty line, and the unemployment rate reads 0.5%. Housing costs here run $143,800 for a typical home value (25% below the state average), with rent averaging $618 a month; 86.5% of homes are owner-occupied.

A solid share of residents have a four-year degree: 40.8% of adults hold a bachelor's degree or higher, the median age is 40.1, and the average commute is -. South Dakota and national benchmarks, shown above, are the best way to contextualize 57330, not the raw numbers 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 →

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 57330, Delmont, 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

625

Population

328.9

Area (sq mi)

2

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 57330?

40.1

Median Age

44.1%

Male

55.9%

Female

0.0%

Foreign-Born

White 95.3%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.8%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.7%
Hispanic or Latino 1.3%

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?

$71,563

Median Household Income

-7% vs state

$29,329

Per Capita Income

23.5%

Poverty Rate

0.5%

Unemployment Rate

How ZIP 57330 ranks nationally

Delmont, SD household income vs. every US ZIP code

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

$71,563 49th percentile higher than 49% 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 62.7%
Bachelor's Degree or Higher 40.8%

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

What does housing look like?

203

Total Housing Units

171

Occupied Units

32

Vacant Units

2.85

Avg Household Size

Occupancy Type

Owner 86.5%
Renter 13.5%

$143,800

Median Home Value

-25% vs state

$618

Median Rent

1945

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 6 business establishments in ZIP 57330, employing approximately 19 people with a combined annual payroll of $666,000.

6

Businesses

19

Employees

$666K

Annual Payroll

0

Industry Sectors

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

More ZIP Codes in Douglas County

57328 standard
Corsica, SD
Pop: 1,134
57313 standard
Armour, SD
Pop: 1,128
57344 standard
Harrison, SD
Pop: 155
57364 standard
New Holland, SD
Pop: 56

Related Areas

Douglas County Delmont, SD South Dakota

Frequently Asked Questions

What county is ZIP code 57330 in? ▼
ZIP code 57330 (Delmont) is located in Douglas County, South Dakota. Douglas County contains multiple ZIP codes, see the full list at /counties/douglas-sd.
What is the population of ZIP code 57330? ▼
ZIP code 57330 in Delmont, SD has a population of 625 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57330? ▼
The median household income in ZIP 57330 is $71,563, which is 6% below the national average of $76,288.
What is the average home value in ZIP 57330? ▼
The median home value in ZIP 57330 is $143,800, which is 48% below the national average of $278,155.
What is the demographic makeup of ZIP 57330? ▼
The largest racial group in ZIP 57330 is White at 95.3%. Hispanic or Latino residents make up 1.3% of the population.
How many businesses are in ZIP code 57330? ▼
ZIP code 57330 has 6 business establishments employing approximately 19 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57330? ▼
In ZIP code 57330, 62.7% of residents aged 25+ have a high school diploma or higher, and 40.8% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 57330? ▼
In ZIP code 57330, approximately 86.5% of occupied housing units are owner-occupied and 13.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57330? ▼
The poverty rate in ZIP code 57330 is 23.5% 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.