PlainZIP

Glenham, SD · standard

ZIP Code 57631

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

361
1/sq mi
$56,827
Median income
$162,500
Median home value
21.6%
Bachelor's or higher

The verdict

Glenham pairs one of the lowest household incomes in the country with below-median home values, in a rural, homeowner-dominated area.

24th pct
household income, US ZIPs
31th pct
home value, US ZIPs
1
people per sq mi
90%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57631 against every reporting US ZIP.

ZIP code 57631 is a sparsely populated ZIP (a standard USPS delivery area) in Glenham, Walworth County, South Dakota, home to just 361 residents across 401.1 square miles, a density of 1 people per square mile, in the Chicago time zone.

ZIP 57631 reports a modest median household income of $56,827 (26% below the South Dakota average), while per-capita income is $52,384. Poverty here runs at 0.5%, with unemployment measured at 21.6%. Median home value sits at $162,500 (15% below the state average), median rent at - a month, and owner-occupancy at 90.3%.

Educational attainment sits below the national norm: 21.6% of adults hold a bachelor's degree or higher, the median age is 60.7, and the average commute is -. Compare these figures to the South Dakota and national benchmarks above rather than reading 57631's numbers in isolation.

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 57631, Glenham, 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

361

Population

401.1

Area (sq mi)

1

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 57631?

60.7

Median Age

45.6%

Male

54.4%

Female

0.8%

Foreign-Born

White 93.7%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.2%
Hispanic or Latino 3.6%

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?

$56,827

Median Household Income

-26% vs state

$52,384

Per Capita Income

0.5%

Poverty Rate

21.6%

Unemployment Rate

How ZIP 57631 ranks nationally

Glenham, SD household income vs. every US ZIP code

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

$56,827 24th percentile higher than 24% 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%). This entry sits in this band. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $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 56.8%
Bachelor's Degree or Higher 21.6%

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

What does housing look like?

296

Total Housing Units

207

Occupied Units

89

Vacant Units

1.76

Avg Household Size

Occupancy Type

Owner 90.3%
Renter 9.7%

$162,500

Median Home Value

-15% vs state

1978

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 57631, employing approximately 18 people with a combined annual payroll of $737,000.

6

Businesses

18

Employees

$737K

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 Walworth County

57601 standard
Mobridge, SD
Pop: 4,003
57472 standard
Selby, SD
Pop: 953
57452 standard
Java, SD
Pop: 278
57420 standard
Akaska, SD
Pop: 75

Related Areas

Walworth County Glenham, SD South Dakota

Frequently Asked Questions

What county is ZIP code 57631 in? ▼
ZIP code 57631 (Glenham) is located in Walworth County, South Dakota. Walworth County contains multiple ZIP codes, see the full list at /counties/walworth-sd.
What is the population of ZIP code 57631? ▼
ZIP code 57631 in Glenham, SD has a population of 361 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57631? ▼
The median household income in ZIP 57631 is $56,827, which is 26% below the national average of $76,288.
What is the average home value in ZIP 57631? ▼
The median home value in ZIP 57631 is $162,500, which is 42% below the national average of $278,155.
What is the demographic makeup of ZIP 57631? ▼
The largest racial group in ZIP 57631 is White at 93.7%. Hispanic or Latino residents make up 3.6% of the population.
How many businesses are in ZIP code 57631? ▼
ZIP code 57631 has 6 business establishments employing approximately 18 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57631? ▼
In ZIP code 57631, 56.8% of residents aged 25+ have a high school diploma or higher, and 21.6% 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 57631? ▼
In ZIP code 57631, approximately 90.3% of occupied housing units are owner-occupied and 9.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57631? ▼
The poverty rate in ZIP code 57631 is 0.5% 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.