The globalEDGE team has recently updated the United States State Trade Statistics with the latest data. For every state in the "Global Insights" tab, you can click on "Trade Statistics" in the left-hand column. For each trade statistic, you can find a particular state's exporter rank, importer rank, trade balance rank, total numbers and percentages for exports and imports, and the impact of international trade on the countries economy. You will also find an updated list of each state's top 10 exporters and importers and the top 10 types of goods imported and exported, along with the USD$ amount for each exporter, importer, and good. Overall, this is a great tool for understanding the United States market.
For example, here is the link to Michigan's State Trade Statistics.