Why do you think they call them counties?

Top 20 most visited counties by our users

Cook, IL
Washington, DC
Fairfax, VA
Orange, FL
Los Angeles, CA
Denver, CO
Fulton, GA
Prince George's, MD
New York, NY
Arlington, VA
Baltimore, MD
City of Baltimore, MD
St. Louis, MO
Philadelphia, PA
Clark, NV
Prince William, VA
Montgomery, MD
Essex, NJ
Cuyahoga, OH
Davidson, TN

Top 10 most visited Canadian counties by our users

Niagara, ON
Toronto, ON
Hamilton, ON
Peel, ON
Halton, ON
Greater Vancouver, BC
Montréal, QC
Oxford, ON
Middlesex, ON
Essex, ON

And the 20 least visited counties by our users (lower 48 states)

1. McPherson, SD
2T. Daniels, MT
2T. Logan, ND
4. McIntosh, ND
5T. Griggs, ND
5T. Grant, ND
7T. Sheridan, MT
7T. Cavalier, ND
7T. Eddy, ND
10. Marshall, SD
11. Towner, ND
12. Faulk, SD
13. Steele, ND
14. Ransom, ND
15. Divide, ND
16. McPherson, NE
17. Sargent, ND
18. Owsley, KY
19T. Garfield, MT
19T. Dewey, SD

announcements

10/25/2018: County/municipio boundaries added for the U.S. Territories and Outlying Areas.

09/23/2018: rework of Google Maps page, and introduction of maps page based on OpenStreetMaps. The latter page will be subject to a completely different set of daily limits.

07/19/2018: We are recovering from a power outage and database crash. Please let me know if you notice anything out of the ordinary.

11/27/2017: A major update to this site has recently been completed. The update will include substantial changes for Canada and add the 2458 municipios of Mexico. Bookmarks or old links to the site may not work. Please report any other issues to mobrule@gmail.com.

welcome

Always ones to let our competitive nature get the better of us, we (that's Bert, Mark, Chris, Marty, and all our like-minded friends) are keeping track of all the U.S. and Canadian counties we've been to.

The rules are simple: you visit a county, then you count it. To visit a county, just cross the plane of the county line. Usually, you visit a county in a car, but it is possible to visit counties by biking, hiking, or even skiing. Generally, we don't count flying over a county, especially flying in a commercial jet airplane (it's just too hard to see the signs that say "Entering Beaufort County").

The scoring so far: U.S. | Canada | Mexico (!)
Browse the Map Room
County lines imposed on ~~Google~~ some Internet maps
Google driving directions with county lines and your visited county data. Includes a tool to list the counties that your proposed route passes through.
The FAQ (Frequently asked questions about whether certain highways go through certain counties).
Think you know your counties? Try the county quiz.
The county-by-county results for the 2000 U.S. Presidential Election which started a trend.
Links to county results of 2004 and 2008 and 2012 U.S. Presidential Election.