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Where 51245 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 51245 into a pocket calculator and turn it upside down: ShZIS — not quite a word, sorry.
- ➕ As a number, 51,245 = 5 × 37 × 277. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100000101101 - 🏠 Its numerical neighbours: 51244 (Matlock, IA, 20 mi away) and 51246 (Rock Rapids, IA, 37 mi away).
- 🔄 Backwards, 51245 becomes 54215 — and that is a real ZIP code: Kellnersville, WI, 398 miles away.
- 👥 28 other ZIP codes are made of exactly the same digits (12455, 12545, 14525, 15254, 15425, 15542, …). The farthest-flung twin is 12545 in Millbrook, NY, 1,118 miles away.
- 🧭 Farther north than 83% of all ZIP codes, and farther west than 70%.
- 🎯272 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51245 and you would come out at 43.08°S, 84.40°E — 803 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 22m of daylight. Shortest: 8h 59m.
- 📏 At 77.4 square miles of land, 51245 is bigger than 71% of ZIP codes — room for about 59 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,377This ZIP1,377 |
|---|---|
| Households | 475This ZIP475 |
| Housing units | 530This ZIP530 |
| Median age | 33.4This ZIP33.4Iowa38.6US 38.9 |
| Median household income | $69,531This ZIP$69,531Iowa$75,059US $80,734 |
| Median home value | $149,700This ZIP$149,700Iowa$208,000US $332,700 |
| Median gross rent | $672This ZIP$672Iowa$972US $1,413 |
| Bachelor's degree or higher | 24.2%This ZIP24.2% |
| Mean commute | 26.5 minThis ZIP26.5 min |
| Population density | 17.8 / sq miThis ZIP17.8 / sq mi |
Business and tax activity
| Business establishments | 42This ZIP42 |
|---|---|
| Employees | 259This ZIP259 |
| Annual payroll | $10,628,000This ZIP$10,628,000 |
| Tax returns filed | 600This ZIP600 |
| Total adjusted gross income | $48,087,000This ZIP$48,087,000 |
Land area
| Land area | 77.36 sq miThis ZIP77.36 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 51245
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51245
| ZIP | City | Distance |
|---|---|---|
51231 | Archer, IA | 7.3 mi |
51058 | Sutherland, IA | 8.8 mi |
51046 | Paullina, IA | 8.9 mi |
51248 | Sanborn, IA | 9.2 mi |
51009 | Calumet, IA | 9.5 mi |
51346 | Hartley, IA | 10.8 mi |
51029 | Larrabee, IA | 13.6 mi |
51022 | Granville, IA | 14.2 mi |
51238 | Hospers, IA | 14.7 mi |
51047 | Peterson, IA | 15.0 mi |
Find every ZIP code within 10 miles of 51245 →
Questions about this ZIP code
Where is ZIP code 51245?
51245 is in Primghar, Iowa, in O'Brien County. Its published point location is 43.0778, -95.6014.
What county is 51245 in?
51245 lies in O'Brien County.
What area code is 51245?
Primghar uses area code 712, from NANPA's telephone records.
What time zone is 51245 in?
51245 uses America/Chicago.
How many people live in 51245?
About 1,377 people live in ZIP code 51245, in 475 households, at 17.8 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 51245?
$69,531 a year, against $75,059 across Iowa.
What ZIP codes are near 51245?
The closest are 51231 (7.3 mi), 51058 (8.8 mi), 51046 (8.9 mi), 51248 (9.2 mi) and 51009 (9.5 mi).
Is 51245 a PO Box ZIP code?
51245 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51245 ZIP Code — Primghar, Iowa (O'Brien County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51245
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51245.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.