Contact the Wi Secretary of Agriculture’s office for the cow data. The department of health services should have the population data. You probably will only get information to about 2008. It takes a while to collect and compile all the data for a given year, then put it into report form.

Here population data for people

Once you find the cow data, do something cool like have a cow and a person jumping over the moon in the top right and vertical bar graphs for cows and people each year.

You could also try any of the major milk producing states Departments of Agriculture, or Cornell University, Penn State, etc

http://www.wisdairy.com/OtherDairyProductInfo/DairyStatistics.aspx

http://www.nass.usda.gov/Statistics_by_State/Wisconsin/index.asp

@cazzie We’re helping someone count cows. I think I just hit a new high in lame.

hey… I do it with pride. I grew up there! LOVE my Wisconsin cheese.

Cheesehead wannabe from NY

So, based on Cazzie’s first link there, i used the following search term in Google:
dairy cows Wisconsin Agricultural Statistics Service (WASS) 2009

This gave me a report with the number of dairy cows for 2009 on page 2

I suspect you could find the rest the same way by just changing the year in the search term.

I know it’s cheesy, and I’ve really been milking you all for support, but I love you guys! Thanks so much.