Census blocks are the smallest geographic tabulation area for the decennial census.

27,937 census blocks cover San Diego County wall-to-wall (of the 8.2 million census blocks covering the U.S., two-thirds are water blocks.

See population density color-value patterns in legend section.

Zoom-in to San Diego city area north of Balboa Park.  View of census tracts by %high school graduate.

Identify tool (see pointer/hand) used to show mini profile of tract 0009.

Further zoom-in  to tract 0009 now shown with census blocks (red boundary with partial transparency).  Street detail added.

Blocks labeled (upper label) with state-county-tract-block geocode.  Blocks labeled (lower label) with total Census 2000 population.

Blocks with red boundary.  Identify tool used to display mini-profile of selected block.

Path=C:\cv\cafiles\tl_2009_06073_tabblock00.shp

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