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Where 57266 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.
- 🔢 Type 57266 into a pocket calculator and turn it upside down: ggZLS — not quite a word, sorry.
- ➕ As a number, 57,266 = 2 × 11 × 19 × 137. Its digits add up to 26, a total 2,038 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101111110110010 - 🏠 Its numerical neighbours: 57265 (Strandburg, SD, 26 mi away) and 57268 (Toronto, SD, 54 mi away).
- 🔄 Backwards, 57266 becomes 66275, which is not a ZIP code at all.
- 👥 32 other ZIP codes are made of exactly the same digits (25667, 25676, 26576, 26675, 27656, 52766, …). The farthest-flung twin is 27656 in Raleigh, NC, 1,166 miles away.
- 🧭 Farther north than 92% of all ZIP codes, and farther west than 74%.
- 🎯385 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57266 and you would come out at 45.29°S, 82.91°E — 656 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 39m of daylight. Shortest: 8h 44m.
- 📏 At 127.3 square miles of land, 57266 is bigger than 83% of ZIP codes — room for about 97 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 626This ZIP626 |
|---|---|
| Households | 206This ZIP206 |
| Housing units | 254This ZIP254 |
| Median age | 33.7This ZIP33.7South Dakota38.0US 38.9 |
| Median household income | $72,500This ZIP$72,500South Dakota$75,081US $80,734 |
| Median home value | $162,500This ZIP$162,500South Dakota$257,400US $332,700 |
| Median gross rent | $775This ZIP$775South Dakota$946US $1,413 |
| Bachelor's degree or higher | 14.4%This ZIP14.4% |
| Mean commute | 25.3 minThis ZIP25.3 min |
| Population density | 4.9 / sq miThis ZIP4.9 / sq mi |
Business and tax activity
| Business establishments | 19This ZIP19 |
|---|---|
| Employees | 116This ZIP116 |
| Annual payroll | $6,323,000This ZIP$6,323,000 |
| Tax returns filed | 250This ZIP250 |
| Total adjusted gross income | $17,346,000This ZIP$17,346,000 |
Land area
| Land area | 127.26 sq miThis ZIP127.26 sq mi |
|---|---|
| Water area | 1.45 sq miThis ZIP1.45 sq mi |
Counties 57266 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Grant County | 52.2% |
| Roberts County | 47.8% |
Other place names in 57266
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57266
| ZIP | City | Distance |
|---|---|---|
57256 | Ortley, SD | 5.8 mi |
57251 | Marvin, SD | 7.7 mi |
57273 | Waubay, SD | 9.4 mi |
57263 | South Shore, SD | 11.1 mi |
57279 | Wilmot, SD | 13.9 mi |
57257 | Peever, SD | 14.6 mi |
57269 | Twin Brooks, SD | 14.9 mi |
57264 | Stockholm, SD | 18.6 mi |
57239 | Grenville, SD | 18.6 mi |
57227 | Corona, SD | 18.7 mi |
Find every ZIP code within 10 miles of 57266 →
Questions about this ZIP code
Where is ZIP code 57266?
57266 is in Summit, South Dakota, in Grant County. Its published point location is 45.2898, -97.0927.
What county is 57266 in?
57266 spans 2 counties: Grant County and Roberts County. Most of it falls in Grant County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 57266?
Summit uses area code 605, from NANPA's telephone records.
What time zone is 57266 in?
57266 uses America/Chicago.
How many people live in 57266?
About 626 people live in ZIP code 57266, in 206 households, at 4.9 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 57266?
$72,500 a year, against $75,081 across South Dakota.
What ZIP codes are near 57266?
The closest are 57256 (5.8 mi), 57251 (7.7 mi), 57273 (9.4 mi), 57263 (11.1 mi) and 57279 (13.9 mi).
Is 57266 a PO Box ZIP code?
57266 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57266 ZIP Code — Summit, South Dakota (Grant County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57266
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57266.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.