57445 ZIP Code, Groton, SD
57445 is a ZIP code in Groton, South Dakota in Brown County. It covers 254 square miles of land. The closest ZIP codes are 57439, 57422 and 57427. 2,072 people live here in 865 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (77%). Median household income is $84,948, above the South Dakota median of $75,081.
Quick facts
- Mailing city: Groton, SD
- County: Brown County
- Land area: 254 sq mi
- Population: 2,072
- Median household income: $84,948
Key figures
| Measure | Value |
|---|---|
| Residents | 2,072 |
| Households | 865 |
| Median household income | $84,948 |
| Income per person | $46,542 |
| Median age | 38.3 |
| Homeowners | 76.8% |
| Median home value | $193,800 |
| Median rent | $1,015 |
| Bachelor's degree or higher | 28.9% |
| Average commute (minutes) | 17.2 |
| Households with kids under 18 | 27.5% |
| Moved in the past year | 8.6% |
| Below the poverty line | 3.5% |
| Broadband internet | 88.1% |
| Speak a non-English language at home | 5.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.8% |
| $10–15K | 0.3% |
| $15–25K | 4.6% |
| $25–35K | 10.2% |
| $35–50K | 16.2% |
| $50–75K | 10.6% |
| $75–100K | 11.6% |
| $100–150K | 16.9% |
| $150–200K | 12.3% |
| $200K+ | 14.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 14.4% |
| 10–19 | 11.4% |
| 20–24 | 2.2% |
| 25–34 | 16.1% |
| 35–44 | 12.5% |
| 45–54 | 9.9% |
| 55–64 | 15.8% |
| 65–74 | 8.8% |
| 75+ | 9.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 43.1% |
| Owned outright | 24.2% |
| Rented | 20.2% |
| Vacant | 12.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 75.5% |
| Townhome | 3.4% |
| 2–4 units | 9.9% |
| 5–19 units | 5.5% |
| 20+ units | 0.0% |
| Mobile / other | 5.6% |
Businesses in 57445
66 business establishments with 406 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 10
- Construction: 9
- Wholesale Trade: 7
- Other Services (except Public Administration): 6
- Finance and Insurance: 5
- Health Care and Social Assistance: 5
- Transportation and Warehousing: 4
- Agriculture, Forestry, Fishing and Hunting: 3
EDDM carrier routes
See every USPS carrier route in 57445 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 57439 — Ferney CDP, SD (9.1 mi)
- 57422 — Andover town, SD (9.5 mi)
- 57427 — Bath CDP, SD (9.9 mi)
- 57474 — Stratford town, SD (14.4 mi)
- 57433 — Columbia city, SD (15.5 mi)
- 57432 — Newport Colony CDP, SD (15.6 mi)
- 57468 — Pierpont town, SD (18.1 mi)
- 57449 (18.3 mi)
Areas that include 57445
- Groton, SD ZIP codes — 1 ZIP code
- Brown County ZIP codes — 16 ZIP codes
- South Dakota ZIP code data
Mail every home in 57445
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 57445, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 57445 in?
- 57445 is a Groton, SD mailing address. None of its land lies inside a Census-defined city or community.
- What county is 57445 in?
- 57445 is in Brown County.
- What is the population of 57445?
- About 2,072 people (±420), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,951.
- What is the median household income in 57445?
- $84,948 (±$21,854), compared with $75,081 for South Dakota as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 57445?
- EDDM2GO's stored route library does not include 57445 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 57445?
- The closest, measured center to center: 57439 (9.1 mi, Ferney), 57422 (9.5 mi, Andover), 57427 (9.9 mi, Bath), 57474 (14.4 mi, Stratford), 57433 (15.5 mi, Columbia) and 57432 (15.6 mi, Newport Colony).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.