US ZIP Code
57630

Glencross, SD

Dewey County  ·  South Dakota

● Active
👥 21 Population ↓ 19% since 2019
💰 $197,500 Median HH Income
▲ 159% above avg
🎂 55.4 Median Age ↑ 5% since 2019
🎓 38.9% College Grads
≈ Avg
📊 0.0% Unemployment
▼ 100% below avg
ZIP Code Details
ZIP Code57630
CityGlencross
StateSouth Dakota (SD)
CountyDewey County
Area Code605
Elevation2,140 ft
Latitude45.333778
Longitude-100.844046
TimezoneChicago (DST)
FIPS46041
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 42.9% (9) Female 57.1% (12) ♀

Race & Ethnicity

White: 76.2%Race
White76.2%

Age Breakdown

45–64
86%

Key Indicators

Median Age55.4 yrs ↑ 5% since 2019
Avg Household Size1.31
Below Poverty0.0% ▼ 100% below avg
College Grads38.9% ≈ Avg
Unemployment0.0% ▼ 100% below avg
HS Graduate8 (44.4%)
Associates3 (16.7%)
Bachelors3 (16.7%)
Graduate Degree4 (22.2%)

Education

HS Grad: 44.4%Associates: 16.7%Bachelors: 16.7%Graduate: 22.2%Edu
HS Grad44.4%
Associates16.7%
Bachelors16.7%
Graduate22.2%
Housing & Income

Housing Tenure

Owner: 100%Tenure
Owner100.0%

Home Value Distribution

Under $50k
13%
$50k–100k
19%
$100k–150k
25%
$150k–200k
19%
$300k–500k
25%

Financials

Median HH Income$197,500 ▲ 159% above avg
Total Units19
Vacant Units3
Avg HH Size1.31

Income Distribution

$50k–75k
38%
$150k–200k
13%
Over $200k
50%
Employment & Commute

How People Get to Work

Drove Alone
67%
Work From Home
33%

Commute Time

15–30 min
75%
30–45 min
25%
Housing Stock

Year Built

Before 1940
14%
1940s–1950s
7%
1980s–1990s
24%
2000+
55%

Summary

Total Units19
Vacant3
Owner Occupied100.0%
Renter Occupied0.0%
Avg HH Size1.31
Frequently Asked Questions
ZIP code 57630 is in Glencross, SD, in Dewey County.
ZIP code 57630 is located in South Dakota (SD).
ZIP code 57630 is in Dewey County, SD.
ZIP 57630 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 57630 is 21 people (ACS 2023).
The median household income in ZIP code 57630 is $197,500 (ACS 2023).
Home value data not available.
About ZIP Code 57630

ZIP code 57630 is located in Glencross, South Dakota, within Dewey County. With a population of 21, this is a sparsely populated ZIP code with an older community — the median age is 55.4 years. Economically, 57630 is a affluent ZIP code: the median household income of $197,500 is more than double the national average.

The population of 57630 is primarily White (76.19%). Residents are moderately educated — 38.9% hold a bachelor's degree or higher, which is near the national average.

A notably high share of workers — 33% — work from home, reflecting the professional makeup of the area. As in most parts of the country, driving alone is the dominant commute mode at 67%.

Overall, ZIP code 57630 in Glencross, SD is characterized as affluent, moderately educated, an older community, and predominantly owner-occupied.