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zipcodes.pro — ZIP/57445

57445

ZIP 57445 is Groton, South Dakota, in Brown County; area code 605; Central time.

Type
Standard
Time zone
America/Chicago
County
Brown
Metro area
Aberdeen, SD
Population
2,072
Coordinates
45.4655, -98.1150
☼ Live from 57445 — Groton, SD

Weather right now

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Local time: —

Where 57445 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 57445
  • 🔢 Type 57445 into a pocket calculator and turn it upside down: ShhLS — not quite a word, sorry.
  • ➕ As a number, 57,445 = 5 × 11489. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000001100101
  • 🏠 Its numerical neighbours: 57442 (Gettysburg, SD, 103 mi away) and 57446 (Hecla, SD, 28 mi away).
  • 🔄 Backwards, 57445 becomes 54475 — and that is a real ZIP code: Rudolph, WI, 412 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (45475, 45745, 47455, 47545, 54457, 54475, …). The farthest-flung twin is 45745 in Lower Salem, OH, 943 miles away.
  • 🧭 Farther north than 92% of all ZIP codes, and farther west than 77%.
  • 🎯390 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57445 and you would come out at 45.47°S, 81.89°E — 607 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 41m of daylight. Shortest: 8h 42m.
  • 📏 At 253.9 square miles of land, 57445 is bigger than 93% of ZIP codes — room for about 193 Central Parks.
🌙 The sky over 57445 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,072This ZIP2,072
Households865This ZIP865
Housing units989This ZIP989
Median age38.3This ZIP38.3South Dakota38.0US 38.9
Median household income$84,948This ZIP$84,948South Dakota$75,081US $80,734
Median home value$193,800This ZIP$193,800South Dakota$257,400US $332,700
Median gross rent$1,015This ZIP$1,015South Dakota$946US $1,413
Bachelor's degree or higher28.9%This ZIP28.9%
Mean commute17.2 minThis ZIP17.2 min
Population density8.2 / sq miThis ZIP8.2 / sq mi

Business and tax activity

Business establishments66This ZIP66
Employees406This ZIP406
Annual payroll$21,693,000This ZIP$21,693,000
Tax returns filed950This ZIP950
Total adjusted gross income$95,104,000This ZIP$95,104,000

Land area

Land area253.89 sq miThis ZIP253.89 sq mi
Water area0.09 sq miThis ZIP0.09 sq mi

Other place names in 57445

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 57445

ZIPCityDistance
57439 Ferney, SD 9.1 mi
57422 Andover, SD 9.5 mi
57427 Bath, SD 9.9 mi
57402 Aberdeen, SD 14.3 mi
57474 Stratford, SD 14.4 mi
57433 Columbia, SD 15.5 mi
57432 Claremont, SD 15.6 mi
57468 Pierpont, SD 18.1 mi
57449 Houghton, SD 18.3 mi
57479 Warner, SD 19.2 mi

Find every ZIP code within 10 miles of 57445 →

Questions about this ZIP code

Where is ZIP code 57445?

57445 is in Groton, South Dakota, in Brown County, part of the Aberdeen, SD micropolitan area. Its published point location is 45.4655, -98.1150.

What county is 57445 in?

57445 lies in Brown County.

What area code is 57445?

Groton uses area code 605, from NANPA's telephone records.

What time zone is 57445 in?

57445 uses America/Chicago.

How many people live in 57445?

About 2,072 people live in ZIP code 57445, in 865 households, at 8.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 57445?

$84,948 a year, against $75,081 across South Dakota.

What ZIP codes are near 57445?

The closest are 57439 (9.1 mi), 57422 (9.5 mi), 57427 (9.9 mi), 57402 (14.3 mi) and 57474 (14.4 mi).

Is 57445 a PO Box ZIP code?

57445 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57445 ZIP Code — Groton, South Dakota (Brown County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57445

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