ZIP code · Fostoria · Iowa · United States
ZIP code 51340 — Fostoria
ZIP code 51340 serves Fostoria, Iowa.
- Postal code
- 51340Single source Value from one source, not cross-checked.
- City
- Fostoria
- County
- Clay FIPS 19041
- State
- Iowa
- Country
- United States
- Coordinates
- 43.0824, -95.1511 — precision precise (locality)
View on OpenStreetMap - Population
- 80 (ZCTA, ACS 5-year)
- Population density
- 668 / sq mi
- Land area
- 0.1 sq mi (0.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $88,750
- Per-capita income
- $50,875
- Median age
- 52.8
- Households
- 46
- Housing units
- 46
- Median home value
- $116,700
- Congressional district
- IA-4 (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 712 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 51340 with another ZIP · ZIPs within 25 miles · distance from 51340
Map of ZIP code 51340
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 7°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 25 | 30 | 43 | 58 | 70 | 80 | 84 | 81 | 75 | 60 | 44 | 30 |
| Avg low °F | 7 | 11 | 24 | 35 | 47 | 58 | 62 | 59 | 50 | 37 | 24 | 13 |
| Precip in | 0.7 | 0.8 | 1.7 | 3.5 | 4.2 | 4.6 | 3.7 | 3.8 | 3.3 | 2.4 | 1.4 | 1.0 |
NOAA 1991–2020 climate normals from the nearest station: SPENCER 1 N (5.7 mi) · NOAA NCEI
Places in ZIP 51340
- 1 post offices
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page