ZIP Code 46778

46778 is one of Indiana's ZIP codes, delivering to addresses in Petroleum, Wells County.

City: Petroleum
County: Wells County
State: Indiana
Prefix: 467xx

Where this code sits

46778 is part of the 467xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Petroleum.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 46778 delivers to without sharing its boundary.

260 Area code 260

ZIP codes nearest 46778

The ZIP codes whose reference points sit closest to 46778.
ZIP code	Distance	Delivers to
ZIP code 46781	5.8 mi	Poneto, IN
ZIP code 47359	6.4 mi	Montpelier, IN
ZIP code 46759	6.7 mi	Keystone, IN
ZIP code 46769	6.7 mi	Linn Grove, IN
ZIP code 47369	7.1 mi	Pennville, IN
ZIP code 46714	8.7 mi	Bluffton, IN
ZIP code 46766	9.0 mi	Liberty Center, IN
ZIP code 46740	10 mi	Geneva, IN

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 46778, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 46778. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.