In the 13 years from 2001-2013 the city of Greenville, Texas had 23 killings. In nine of those years they had a total of 10 killings. One year was 8 and one year was 5. They are not likely to catch Baltimoron any time soon.
One bad event such as some asshole murdering his wife and kids can skew the stats in a smaller population base.
I hate lists like this that do not give actual raw numbers.