Checked
ZIP Code 57445
Groton, SD, Brown County
Population
2,072
Land area
253.9sq mi
People per sq mi
8
City
Groton
ZIP 57445 and nearby ZIP codes
ZIP 57445 at a glance
- ZIP 57445 (Groton) is 32% less dense than South Dakota as a whole.
- Households here earn a median of $84,948 a year, 13% more than the South Dakota figure of $75,081.
- A typical owner-occupied home is valued at $193,800 (25% below South Dakota) and median rent is $1,015 a month.
Local data for ZIP 57445
Counts from official public data
Housing and community stats
ZIP 57445, American Community Survey 2020-2024
Median household income
$84,948
Poverty rate
3.5%
Median home value
$193,800
Median rent
$1,015/mo
Homeownership
76.8%
Bachelor's or higher
28.9%
Median age
38.3
Average commute
17.2 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
66
ZIP Business Patterns 2023
Employees
406
$21.7M annual payroll
PPP loans
$6.8M
294 loans
Campaign donations
$16.7K
44% D, 5% R, 2026 cycle
Environment and hazard risk
ZIP 57445, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
1,202
Countywide, mostly thunderstorm wind
Flood insurance policies
114
0.7% of homes, county
July high / Jan low
82° / 5°F
24.0 inches of rain a year
Health statistics
Share of adults in ZIP 57445, CDC PLACES estimates
Obesity
34.8%
U.S. 33.3% +1.5 pts
Diabetes
11.2%
U.S. 12.1% -0.9 pts
Smoking
13.6%
U.S. 12.8% +0.8 pts
Uninsured (18-64)
6.9%
U.S. 11.1% -4.2 pts
Frequently asked questions
- What city is ZIP code 57445?
- ZIP code 57445 is in Groton, SD (Brown County).
- What county is ZIP code 57445 in?
- ZIP code 57445 is mostly in Brown County, South Dakota.
- How many people live in ZIP code 57445?
- About 2,072 people live in the 57445 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.