Canada, Mexico, and the US are trying to provide agricultural statistics across the 3 countries. Here's a map showing the distribution of farms, with each blue dot equaling 200 farms. Because it's static, not interactive, the map isn't great, but it's still interesting. Canada has an interesting distribution: no farms above the western Great Lakes, but many east of the Rockies and a surprising concentration north of NH and VT. Mexico has about twice as many farms as the US, so the southern part of the country is solid blue.
I'd also note the Amish concentration in Lancaster county, PA. The concentration of smaller farms shows up as an almost blue dot.