I would recommend visiting http://www.city-data.com/city/American-Canyon-California.html. According to this site, American Canyon's "crime index" is in the low 200s, compared to the national average of 319.1. In addition, our unemployment rate as of August 2012 was 7.5%. Our local newspaper (http://www.timesheraldonline.com) recently reported that our unemployment rate went up slightly this year to 9.4% as of June 2013; however, the overall unemployment rate for our county (Napa County) is at 5.8%, compared to the national average of 7.8%.
My husband and I bought our home in American Canyon last August, and we LOVE it! The city is well-maintained, and the community members are friendly. Hope this information helps!