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This paper examines the epidemiology of nonfatal firearm violence (NFFV) on the Westside of Chicago over three finite time periods: 2005–2008, 2009–2012, and 2013–2016. The trend analysis will look at any significant changes over the time periods and describe the demographic characteristics of NFFV. A descriptive analysis of Mount Sinai Hospital (MSH) Emergency Department (ED) data was conducted. NFFV patients were identified by specific firearm ICD-9 primary eCode injury categories: accident, assault, legal intervention, undetermined intent, suicide or self-inflicted injury, and legal intervention. The Pearson Chi-square test was conducted to statistically compare the categorical frequencies of the Chicago metropolitan region of injury, cause of firearm related injury, and place of injury by time period. There were a total of 3962 nonfatal hospitalizations at MSH between the three time periods due to gun violence related injuries. Overall, nonfatal hospitalizations were most frequent for those between age groups 16–24 (52.5%). The number of nonfatal hospitalizations decreased with increasing age for the age groups 35–44 (9.7%), 45–54 (3.2%), and > 54 (1.2%). There were significantly more nonfatal hospitalizations in males (n = 3649) than females (n = 312) across the three time periods. However, there was a 74.7% increase in female nonfatal hospitalizations from 2009–2012 to 2013–2016. There were significant racial differences in nonfatal hospitalizations between the three time periods. NFFV continues to be problem on the Westside of Chicago, particularly for young, Black men. The incidence of gun violence however has not changed significantly between 2005 and 2016. [ABSTRACT FROM AUTHOR]