The Institute prepared demographic profies for each of the five neighborhood bases adopted by the Dallas Morning News. These reports contained analysis of a variety of secondary data and public records. Because public records are updated with various and sporadic frequency, these analyses represent the most recent information available. In some cases, this was 2008, in others, it is as old as 2005. While neighborhood bases are defined by streets and intersections, data about these neighborhoods was available at a variety of geographic levels; to provide meaningful neighborhood summaries it was necessary to define the neighborhood bases in different ways. For information available at the Census Block Group, like data on demographic trends, each neighborhood base was defined by aggregating the block groups comprising it. Other data, such as official birth and death data for the state, was available at the Census Tract level, which is larger than the Block Group. In some cases, tract boundaries extended beyond the actual boundaries of the neighborhood base. The aggregation of those tracts most closely resembling the neighborhood base boundaries was used for reporting purposes. One of the larger units at which data were available include the Public Use Hospital Discharge data file, IRS Statistics on Income data file, FDIC Summary of Deposits file, and Census County Business Patterns data, all of which were released at the ZIP code level. While some neighborhood bases sit entirely in a single ZIP code (Pleasant Grove, for instance, occupies only a portion of 75217), other bases like Heart of Oak Cliff spanned portions of several ZIP codes. As with census tract data, aggregations of ZIP codes that most closely matched the neighborhood base boundaries were used to provide neighborhood summaries. A final, larger level of analysis was the school district attendance boundary, which was used in the analyses based on the Texas Academic Excellence Indicator System. As with ZIP codes, schools whose attendance boundaries included a significant number of neighborhood students were included in the profile.