US ZIP Code
57445

Groton, SD

Brown County  ·  South Dakota

● Active
👥 2,033 Population ↑ 5% since 2019
💰 $76,250 Median HH Income
≈ Avg ↑ 18% since 2019
🎂 37.3 Median Age ↓ 4% since 2019
🏠 $185,200 Median Home Value
▼ 34% below avg ↑ 13% since 2019
🎓 39.6% College Grads
≈ Avg
📊 2.8% Unemployment
▼ 42% below avg ↑ 99% since 2019
ZIP Code Details
ZIP Code57445
CityGroton
StateSouth Dakota (SD)
CountyBrown County
Area Code605
Elevation1,304 ft
Latitude45.465537
Longitude-98.114967
TimezoneChicago (DST)
FIPS46013
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 53.5% (1,088) Female 46.5% (945) ♀

Race & Ethnicity

White: 91%Hispanic: 5.1%Asian: 2.1%Other: 1.1%Race
White91.0%
Hispanic5.1%
Asian2.1%
Other1.1%

Age Breakdown

Under 5
7%
5–17
19%
18–24
3%
25–44
27%
45–64
25%
65+
7%

Key Indicators

Median Age37.3 yrs ↓ 4% since 2019
Avg Household Size2.36
Below Poverty3.3% ▼ 67% below avg
College Grads39.6% ≈ Avg
Unemployment2.8% ▼ 42% below avg
No HS Diploma10 (0.8%)
HS Graduate362 (27.2%)
Some College228 (17.1%)
Associates204 (15.3%)
Bachelors190 (14.3%)
Graduate Degree336 (25.3%)

Education

No HS: 0.8%HS Grad: 27.2%Some College: 17.1%Associates: 15.3%Bachelors: 14.3%Graduate: 25.3%Edu
No HS0.8%
HS Grad27.2%
Some College17.1%
Associates15.3%
Bachelors14.3%
Graduate25.3%
Housing & Income

Housing Tenure

Owner: 78%Renter: 22%Tenure
Owner78.0%
Renter22.0%

Home Value Distribution

Under $50k
10%
$50k–100k
8%
$100k–150k
23%
$150k–200k
13%
$200k–300k
24%
$300k–500k
16%
Over $500k
6%

Financials

Median HH Income$76,250 ≈ Avg ↑ 18% since 2019
Median Home Value$185,200 ▼ 34% below avg ↑ 13% since 2019
Home/Income Ratio2.4x (nat avg ~3.5x)
Median Rent$972/mo ↑ 30% since 2019
Total Units963
Vacant Units118
Avg HH Size2.36

Income Distribution

Under $25k
10%
$25k–50k
27%
$50k–75k
12%
$75k–100k
11%
$100k–150k
16%
$150k–200k
11%
Over $200k
13%
Employment & Commute

How People Get to Work

Drove Alone
95%
Walked
2%
Work From Home
3%

Commute Time

Under 15 min
39%
15–30 min
48%
30–45 min
9%
Over 45 min
5%
Housing Stock

Year Built

Before 1940
3%
1940s–1950s
8%
1960s–1970s
9%
1980s–1990s
10%
2000+
71%

Summary

Total Units963
Vacant118
Owner Occupied78.0%
Renter Occupied22.0%
Avg HH Size2.36
Frequently Asked Questions
ZIP code 57445 is in Groton, SD, in Brown County.
ZIP code 57445 is located in South Dakota (SD).
ZIP code 57445 is in Brown County, SD.
ZIP 57445 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 57445 is 2,033 people (ACS 2023).
The median household income in ZIP code 57445 is $76,250 (ACS 2023).
The median home value in ZIP 57445 is $185,200 (ACS 2023).
About ZIP Code 57445

ZIP code 57445 is located in Groton, South Dakota, within Brown County. With a population of 2,033, this is a sparsely populated ZIP code with a relatively young community — the median age is 37.3 years. Economically, 57445 is a middle-income ZIP code: the median household income of $76,250 is near the national average.

Real estate in ZIP code 57445 represents an affordable housing market. The median home value of $185,200 is below the national average. Renters can expect to pay around $972 per month in median rent. Homeownership is strong here — 78.0% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 13% since 2019.

The population of 57445 is primarily White (91.00%). Residents are moderately educated — 39.6% hold a bachelor's degree or higher, which is near the national average. Poverty affects a relatively small share of residents at 3.3%. Household income has grown by 18% since 2019.

The unemployment rate in 57445 stands at 2.8%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 92%.

Overall, ZIP code 57445 in Groton, SD is characterized as middle-income, moderately educated, a relatively young community, and predominantly owner-occupied. With 2,033 residents, a median household income of $76,250, and a median home value of $185,200, it offers a clear picture of life in this part of South Dakota.