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Where 57538 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 57538 into a pocket calculator and turn it upside down: BESLS — not quite a word, sorry.
- ➕ As a number, 57,538 = 2 × 13 × 2213. Its digits add up to 28, a total 1,520 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000011000010 - 🏠 Its numerical neighbours: 57537 (Hayes, SD, 139 mi away) and 57540 (Holabird, SD, 95 mi away).
- 🔄 Backwards, 57538 becomes 83575, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (35578, 35587, 35758, 38557, 38575, 53578, …). The farthest-flung twin is 78553 in Harlingen, TX, 1,173 miles away.
- 🧭 Farther north than 83% of all ZIP codes, and farther west than 79%.
- 🎯229 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57538 and you would come out at 43.12°S, 80.84°E — 664 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 23m of daylight. Shortest: 8h 59m.
- 📏 At 123.0 square miles of land, 57538 is bigger than 82% of ZIP codes — room for about 93 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 236This ZIP236 |
|---|---|
| Households | 93This ZIP93 |
| Housing units | 181This ZIP181 |
| Median age | 49.2This ZIP49.2South Dakota38.0US 38.9 |
| Median household income | $46,875This ZIP$46,875South Dakota$75,081US $80,734 |
| Median home value | $61,400This ZIP$61,400South Dakota$257,400US $332,700 |
| Bachelor's degree or higher | 18.8%This ZIP18.8% |
| Mean commute | 18.2 minThis ZIP18.2 min |
| Population density | 1.9 / sq miThis ZIP1.9 / sq mi |
Business and tax activity
| Tax returns filed | 110This ZIP110 |
|---|---|
| Total adjusted gross income | $6,025,000This ZIP$6,025,000 |
Land area
| Land area | 122.96 sq miThis ZIP122.96 sq mi |
|---|---|
| Water area | 0.20 sq miThis ZIP0.20 sq mi |
Other place names in 57538
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57538
| ZIP | City | Distance |
|---|---|---|
57571 | Saint Charles, SD | 6.5 mi |
57523 | Burke, SD | 9.6 mi |
57317 | Bonesteel, SD | 9.7 mi |
68755 | Naper, NE | 13.5 mi |
68722 | Butte, NE | 19.6 mi |
57533 | Gregory, SD | 20.7 mi |
57335 | Fairfax, SD | 21.2 mi |
57529 | Dallas, SD | 21.9 mi |
57369 | Platte, SD | 23.1 mi |
57342 | Geddes, SD | 24.5 mi |
Find every ZIP code within 10 miles of 57538 →
Questions about this ZIP code
Where is ZIP code 57538?
57538 is in Herrick, South Dakota, in Gregory County. Its published point location is 43.1212, -99.1566.
What county is 57538 in?
57538 lies in Gregory County.
What area code is 57538?
Herrick uses area code 605, from NANPA's telephone records.
What time zone is 57538 in?
57538 uses America/Chicago.
How many people live in 57538?
About 236 people live in ZIP code 57538, in 93 households, at 1.9 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 57538?
$46,875 a year, against $75,081 across South Dakota.
What ZIP codes are near 57538?
The closest are 57571 (6.5 mi), 57523 (9.6 mi), 57317 (9.7 mi), 68755 (13.5 mi) and 68722 (19.6 mi).
Is 57538 a PO Box ZIP code?
57538 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57538 ZIP Code — Herrick, South Dakota (Gregory County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57538
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57538.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.