Block Group


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Block Group

A location used by the U.S. Census Bureau where approximately 800 to 1,000 people live. As the name indicates, a block group is usually a collection of city blocks. It is a subdivision of a census tract and is the smallest geographical unit for which the Census reports data.
References in periodicals archive ?
Mean post-operative heart rate in the control group was significantly higher than that in the block group (Table 2).
The estimated number of commuters per block group who reported bicycling or walking (ACS active commuters) was downloaded from the Census Bureau (5).
Three patients--two in the paracervical block group and one in the control group--developed a cervical infection after surgery.
The geographic distribution of mammography capacity at the block group level is highlighted in Figure 2.
Options considered for model development range from focused, high-resolution analysis of a relatively small number of samples (100 to 200) to a much broader analysis, considering the majority of block groups (approximately 200,000), but with estimates generated for each block group at lower resolution.
To evaluate possible associations between socioeconomic factors and plague risk, we used US Census Bureau decennial data to compare census block groups (CBGs) in which human plague cases occurred and did not occur in New Mexico during 1976-2007.
Much of the current neighborhood-based research uses variables aggregated on administrative boundaries such as census tracts, block groups, and zip codes to explore phenomena occurring within these geospatially bound social networks (Coulton, 2005; Coulton, Cook, & Irwin, 2004; Coulton, Korbin, Chan, & Su, 2001; Coulton, Korbin, & Su, 1999; Dietz, 2002; Grannis, 1998, 2005; Mayer & Jencks, 1989; Raudenbush & Sampson, 1999; Sampson, Morenoff, & Gannon-Rowley, 2002; Sampson & Raudenbush, 1999).
In the first stage of selection, 710 census block groups were categorized by gonorrhea prevalence and number of households with at least one resident aged 15-24.
Beginning in 2010, five-year estimates will be released for populations with less than 20,000 people, down to the census tract and block group level.
Extended Block Group of the Year was won by Thomas Gammell and Paul Maher (Cummins Turbo Technologies and Von Roll Isola).
Students' addresses were matched with Census block groups and then classified according to the average SES characteristics of their block group.