Works perfect for me on WP 3.9.2

Currently using this on single and MU installs v3.9.2 and its working perfect code wise.

Granted some of the location data is not accurate but this is not the fault of the plugin but of the Free Maxmind database. You need to buy the professional Maxmind db if you want really accurate location data for states and cities especially.

I’ve tested using various country filters and it works fine for me

https://www.ads-software.com/plugins/wpgeocode/