Historical U.S. Counties Auto-Checker

While searching Ancestry & FamilySearch, auto-checks county and place, notes boundary changes, shows historical county maps

Historical U.S. Counties Auto-Checker is available to install from Chrome Web Store and for download from this page. It has 1,000+ active users The latest version is 4.75, and it was published 3 days ago.

Install from Chrome Web Store

View source code

Total download count: 136 (Only count downloads from Chrome-Stats)

All available versions

You can find the current and older versions of Historical U.S. Counties Auto-Checker here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions

35 versions available for download.

Install CRX file

Option 1: The easy way (for Windows users only)

Download and run chrome-stats.exe file on your PC. This method will allow you to install Chrome extensions directly from chrome-stats.com in one click. You only need to do this once!
Type in chrome://restart in the URL bar to restart the browser for the changes to take effect.
Download and install the Historical U.S. Counties Auto-Checker CRX file

Option 2: Advanced method

Download Historical U.S. Counties Auto-Checker CRX file
NOTE: Sometimes the browser may block downloading / installing CRX file from outside the Chrome Web Store. If so, you may need to use option 1, or download the ZIP file instead.
In the URL bar, go to chrome://extensions
Enable Developer mode
Drag and drop the downloaded Historical U.S. Counties Auto-Checker CRX file into the Extensions page
When prompted, click Add extension to install Historical U.S. Counties Auto-Checker.

Install ZIP file

Download and unpack the Historical U.S. Counties Auto-Checker ZIP file to a directory of your choice.
In Chrome browser, go to chrome://extensions
Enable Developer mode.
Click on the Load Unpacked button.
Select the directory of with the unpacked Historical U.S. Counties Auto-Checker ZIP file from step 1. Historical U.S. Counties Auto-Checker is now installed on your browser.