ZIP code · Petroleum · Indiana · United States
ZIP code 46778 — Petroleum
ZIP code 46778 serves Petroleum, Indiana.
- Postal code
- 46778Single source Value from one source, not cross-checked.
- City
- Petroleum
- County
- Wells
- State
- Indiana
- Country
- United States
- Coordinates
- 40.6114, -85.1526 — precision precise (locality)
View on OpenStreetMap - Population
- 83 (ZCTA, ACS 5-year)
- Median age
- 53.2
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 · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page