ZIP code 51340
Where is ZIP code 51340?
Fostoria, Iowa
Clay County · PO Box only ZIP code
ZIP code 51340 belongs to Fostoria, Iowa in Clay County. 51340 is a PO Box only ZIP code: it is used for post office boxes at the Fostoria post office, not for street addresses. It is in the Central Time zone and uses area code 712. About 75 people live in the 51340 area, where the median household income is $90,250. The closest ZIP codes are 51301 (Spencer, 4.3 mi north), 51343 (Greenville, 5.8 mi southeast) and 51357 (Royal, 6.3 mi west).
| ZIP code | 51340 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Fostoria |
| State | Iowa (IA) |
| County | Clay County |
| Time zone | Central Time · now |
| Area code | 712 |
| Coordinates | 43.0824, -95.1511 map |
| 3-digit prefix | 513 |
Population and income in 51340
| Population | 75 · lower than 96% of Iowa ZIP codes |
|---|---|
| People per square mile | 625 · higher than 91% of Iowa ZIP codes |
| Median age | 46.9 years · higher than 70% of Iowa ZIP codes |
| Men / women | 59% / 41% |
| Median household income | $90,250 · higher than 79% of Iowa ZIP codes |
| Income per person | $44,464 |
| Below the poverty line | 0.0% |
| Bachelor’s degree or higher | 18% of adults 25+ |
| Median home value | $133,800 · lower than 66% of Iowa ZIP codes |
| Housing units | 39 |
| Households | 37 (2.03 people on average) |
| Owners / renters | 89% / 11% |
| Land area | 0.12 sq mi |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51340. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51340
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 51301 | Spencer, IA | 4.3 mi N | Standard |
| 51343 | Greenville, IA | 5.8 mi SE | Standard |
| 51357 | Royal, IA | 6.3 mi W | Standard |
| 51341 | Gillett Grove, IA | 7.1 mi SE | PO Box only |
| 51333 | Dickens, IA | 9.7 mi NE | Standard |
| 51338 | Everly, IA | 10.2 mi NW | Standard |
| 51366 | Webb, IA | 12.1 mi SE | Standard |
| 50585 | Sioux Rapids, IA | 12.2 mi S | Standard |
| 51047 | Peterson, IA | 14 mi SW | Standard |
| 51358 | Ruthven, IA | 14.1 mi E | Standard |
| 51033 | Linn Grove, IA | 15.2 mi S | Standard |
| 50515 | Ayrshire, IA | 15.6 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51340 or measure the distance to another ZIP code.
How to address mail to 51340
PO BOX 123
FOSTORIA IA 51340
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (51340-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 51340?
- 51340 is a Fostoria, Iowa ZIP code.
- What county is 51340 in?
- ZIP code 51340 is in Clay County, Iowa.
- What time zone is ZIP code 51340 in?
- 51340 is in the Central Time zone (America/Chicago).
- What area code is 51340?
- Phone numbers in ZIP code 51340 use area code 712.
- What is the population of ZIP code 51340?
- About 75 people live in ZIP code 51340, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51340?
- The median household income in 51340 is $90,250 a year, higher than 79% of Iowa ZIP codes.
- Can I use 51340 for a street address?
- No. 51340 is only for PO Boxes. Street addresses in Fostoria use another ZIP code.
- What ZIP codes are near 51340?
- The nearest ZIP codes to 51340 are 51301 (Spencer, 4.3 miles), 51343 (Greenville, 5.8 miles), 51357 (Royal, 6.3 miles) and 51341 (Gillett Grove, 7.1 miles).