PlainZIP

Oacoma, SD · standard

ZIP Code 57365

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

522
3/sq mi
$76,000
Median income
$218,400
Median home value
23.6%
Bachelor's or higher

The verdict

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

Top 44%
household income, US ZIPs
49th pct
home value, US ZIPs
3
people per sq mi
80%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57365 against every reporting US ZIP.

ZIP code 57365 is a sparsely populated ZIP (a standard USPS delivery area) in Oacoma, Lyman County, South Dakota, home to just 522 residents across 158.2 square miles, a density of 3 people per square mile, in the Chicago time zone.

ZIP 57365 lands in the middle-income range, with a median household income of $76,000 (1% below the South Dakota average), while per-capita income is $56,943. 7.0% of residents live below the poverty line, and the unemployment rate reads 5.8%. On housing, the median home value is $218,400 (14% above the state average) with median rent at $883 per month, and 79.5% of occupied units are owner-occupied.

Educational attainment sits below the national norm: 23.6% of adults hold a bachelor's degree or higher, the median age is 41.2, and the average commute is -. A geography-based comparison follows: 1 ZIP codes within about 10 miles of 57365, plus 5 more within Lyman County, give a clearer read than the national average 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 57365

Top 5 sectors by establishment count in Oacoma, SD

Which industries have the most business establishments in ZIP 57365.

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 57365, Oacoma, 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

522

Population

158.2

Area (sq mi)

3

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 57365?

41.2

Median Age

59.3%

Male

40.7%

Female

1.7%

Foreign-Born

White 96.3%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 2.3%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 1.8%

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?

$76,000

Median Household Income

-1% vs state

$56,943

Per Capita Income

7.0%

Poverty Rate

5.8%

Unemployment Rate

How ZIP 57365 ranks nationally

Oacoma, SD household income vs. every US ZIP code

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

$76,000 Top 44% higher than 56% 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 66.9%
Bachelor's Degree or Higher 23.6%

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

What does housing look like?

333

Total Housing Units

264

Occupied Units

69

Vacant Units

2.27

Avg Household Size

Occupancy Type

Owner 79.5%
Renter 20.5%

$218,400

Median Home Value

+14% vs state

$883

Median Rent

1993

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 24 business establishments in ZIP 57365, employing approximately 256 people with a combined annual payroll of $7,871,000.

24

Businesses

256

Employees

$7.9M

Annual Payroll

3

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 9 37.5%
Retail trade 8 33.3%
Construction 3 12.5%

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 57365 vs 57325 →

ZIP Code City Population Distance
57325 Chamberlain, SD 3,054 7.1 mi

More ZIP Codes in Lyman County

57548 standard
Lower Brule, SD
Pop: 1,380
57568 standard
Presho, SD
Pop: 689
57569 standard
Reliance, SD
Pop: 445
57544 standard
Kennebec, SD
Pop: 419
57576 standard
Vivian, SD
Pop: 204

Related Areas

Lyman County Oacoma, SD South Dakota

Frequently Asked Questions

What county is ZIP code 57365 in? ▼
ZIP code 57365 (Oacoma) is located in Lyman County, South Dakota. Lyman County contains multiple ZIP codes, see the full list at /counties/lyman-sd.
What is the population of ZIP code 57365? ▼
ZIP code 57365 in Oacoma, SD has a population of 522 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57365? ▼
The median household income in ZIP 57365 is $76,000, which is 0% below the national average of $76,288.
What is the average home value in ZIP 57365? ▼
The median home value in ZIP 57365 is $218,400, which is 21% below the national average of $278,155.
What is the demographic makeup of ZIP 57365? ▼
The largest racial group in ZIP 57365 is White at 96.3%. Hispanic or Latino residents make up 1.8% of the population.
How many businesses are in ZIP code 57365? ▼
ZIP code 57365 has 24 business establishments employing approximately 256 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 57365? ▼
The top industries by establishment count in ZIP 57365 are: Accommodation and food services (9), Retail trade (8), Construction (3). There are 3 industry sectors represented in total.
What is the education level in ZIP code 57365? ▼
In ZIP code 57365, 66.9% of residents aged 25+ have a high school diploma or higher, and 23.6% 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 57365? ▼
In ZIP code 57365, approximately 79.5% of occupied housing units are owner-occupied and 20.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57365? ▼
The poverty rate in ZIP code 57365 is 7.0% 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.