ZIP Code 43666

43666 is one of Ohio's ZIP codes, delivering to addresses in Toledo, Lucas County.

City: Toledo
County: Lucas County
State: Ohio
Prefix: 436xx

Where this code sits

43666 is part of the 436xx range, the group of codes handled by one mail processing centre. Toledo is served by 32 ZIP codes in total; the full list, with the county each falls in, is on the Toledo page.

Toledo Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43666 delivers to without sharing its boundary.

ZIP codes nearest 43666

The ZIP codes whose reference points sit closest to 43666.
ZIP code	Distance	Delivers to
ZIP code 43656	0.0 mi	Toledo, OH
ZIP code 43661	0.0 mi	Toledo, OH
ZIP code 43604	1.8 mi	Toledo, OH
ZIP code 43611	1.9 mi	Toledo, OH
ZIP code 43605	1.9 mi	Toledo, OH
ZIP code 43608	1.9 mi	Toledo, OH
ZIP code 43660	2.5 mi	Toledo, OH
ZIP code 43616	2.8 mi	Oregon, 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 43666, plotted from its record coordinates.

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

Scope ZIP code 43666. 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.