ZIP Code 43520

43520 is one of Ohio's ZIP codes, delivering to addresses in Farmer, Defiance County.

City: Farmer
County: Defiance County
State: Ohio
Prefix: 435xx

Where this code sits

43520 is part of the 435xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Farmer.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43520 delivers to without sharing its boundary.

ZIP codes nearest 43520

The ZIP codes whose reference points sit closest to 43520.
ZIP code	Distance	Delivers to
ZIP code 43549	5.5 mi	Ney, OH
ZIP code 43517	6.5 mi	Edgerton, OH
ZIP code 43506	6.8 mi	Bryan, OH
ZIP code 43536	6.8 mi	Mark Center, OH
ZIP code 43556	8.1 mi	Sherwood, OH
ZIP code 43526	9.0 mi	Hicksville, OH
ZIP code 43505	11 mi	Blakeslee, OH
ZIP code 45821	12 mi	Cecil, OH

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 43520, plotted from its record coordinates.

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

Scope ZIP code 43520. 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.