Lake County ZIP Codes

Lake County is a county of Ohio.

ZIP codes: 11
Cities & towns: 8
Area codes: 3
Land area: 229 sq mi

Every ZIP code in Lake County

440xx

The complete list of Lake County, OH ZIP codes with the city each one delivers to.
ZIP code	City
44045	Grand River
44057	Madison
44060	Mentor
44061	Mentor
44077	Painesville
44081	Perry
44092	Wickliffe
44094	Willoughby
44095	Eastlake
44096	Willoughby
44097	Eastlake

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Lake County codes above are listed without a column we would have to invent.

Cities and towns in Lake County

Area codes covering Lake County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Lake County's ZIP codes sit

Each point is the reference point of one Lake County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Scope every ZIP code recorded in Lake County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.