I'd like to help with that but... that's really an impossible question to answer here. It depends on what is happening in that area, if it is on the edge of development, and local economy. Check locally.

I can't find any data that shows the trends at all...was wondering if anyone had anything anecdotaly they could tell me. Even in just your local area?

Here is information on land in Kansas. Values in other states will depend on proximity to populated areas (most of rural kansas is sparcely populated)

Here is a link that might be useful: Kansas land prices

That's a pretty broad question ... here in Western NY, outside Buffalo, we never had the huge increases in values ... it's always just been a slow steady increase.

Now some of the more rural areas are becoming more popular as people want to move out of the McMansion burbs, into less populated areas. More popular = increase in price.

East of the Cascades in Oregon:

The small farms, the big farms, and the enormous cattle ranches went up in price just as much as residential, if not more.

The prices of agricultural have fallen steeply, but not down to what they were before the bubble, and not as deep a cut as residential.