I came across this neat tool called FeedMap, created by Chandu Thota.

It helps you map your blog to your geo-location (using your address or geo-coordinates) and shows you how many bloggers live in your city or area near you.

The site says

Using FeedMap you can geo-code your blog, browse already geo-coded blogs and search for blogs. Once geo-coded, you can get your own BlogMap location using a simple url that allows you to network with your local bloggers and much more!

For instance, here’s the feedmap I created for this blog.

It doesn’t seem very accurate cause it mapped me somewhere in the interiors of Maharastra state instead of Mumbai - where I’m sure there are many, many more than 2 bloggers

But it does seem to be a fun tool to help bloggers in the same neighbourhood connect with each other. I hope you have better luck with it.