Milwaukee County Divided up into Block Groups.Definition : a block group denotesa cluster of blocks in which 800 to1000 people reside. Block groups are a subset of census tracts.
Each Block group was measured for: 1) Geographic Identifier 2) Number of Items Checked Out 3) Number of patrons
Data collection started in lateNovember, and includes two months data.
Service Area Map Methodology2008 Service Map Emerging 2013 Service Map• The service areas were • All of the citys territory and population is included. determined by MPL staff • Service areas are formed by committee; block groups.• Based on geographic • Service areas are contiguous. features/barriers; • Block group selection considers which libraries• Transportation options; and patrons used to check out items.• Anecdotal observation. • Block group selection also considers natural and man- made features; and paths of travel (street orientation.)
MPL Service AreasExisting Service Area Map (2008) Emerging Service Map (2013)
Notes on Emerging Service Map 1. West Allis, Wauwatosa and Brown Deer draw nearby city residents in large numbers to their locations. 2. The southern suburbs don’t draw heavily (Greenfield, Greendale, Cudahy etc.) 3. Central Library has a stronger geographic reach to the north than to the south. 4. Most Block Groups showed check outs from several different libraries.
This is just the beginning! Major data sets still to be incorporated in coming months: Public safety (source: Milwaukee Police Department) Schools (source: MPS) Geographic (sources: Milwaukee City, County and Esri) Tapestry segmentation (source: Esri) Demographic/socio-economic (sources: Census 2010, American Community Survey, Census 2012 Current Year Estimate of Population, and Esri)