When I check https://www.lowes.com/store/ it does a reasonable job, based on my current network. Entering my actual zip code changes the order of the results just a bit.

Websites typically rely on your computer's current IP address to determine your location. This is based primarily on information your internet service provider provided to public databases, or if you use an intermediary like a VPN, information provided by that service provider. This can result in "out-of-town" results, or in some cases completely bizarre results.

Many sites allow you to enter and save your preferred location, or can trigger a request to Firefox to provide more precise location information. This varies from site to site, and might not be retained if you are not logged in or clear cookies.

Hmm, this is not what you want to hear:

Your Yahoo services update your location whenever the device you're using moves to a new area. The feature to add or manually select locations is temporarily disabled while under development for improvements.

Source: Can I change the location preference in my Yahoo account? | Yahoo Help - SLN16027