In which county is ZIP code 45812 located?

ZIP 45812 is listed under Hardin, OH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 45812: Alger, OH

ZIP: 45812

County: Hardin

Coordinates: 40.70600, -83.82500

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Alger, OH postal area 45812. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Alger
ZIP Code	45812
County	Hardin
State	OH
Latitude / Longitude	40.70600, -83.82500
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 45812 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 45812 is approximately 40.70600 (latitude) and -83.82500 (longitude). This location sits within Hardin, contributing to regional planning across OH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 45812 for mail delivery and general location reference in Hardin, OH.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Alger.

Related ZIP Codes (Nearby)

Explore other postal codes near Alger within OH.

Frequently Asked Questions

What is the primary city for ZIP code 45812?

The primary city for this ZIP code is Alger, located in OH.

In which county is 45812 located?

ZIP code 45812 is situated within Hardin, OH.

What are the coordinates for 45812?

The approximate center point is 40.70600 (Latitude) and -83.82500 (Longitude).

Is ZIP code 45812 active?

This page lists ZIP 45812 as Listed based on the latest refresh date shown above.

Does ZIP 45812 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08