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Using GeoDemographic Shapefiles
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Decision-Making Information
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Contact Proximity for information
resources and solutions ...
(888) DMI-SOLN
(888) 364-7656
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Getting an accurate picture of how things are changing, or an understanding of existing situations,
requires a flexible way to make maps, and perform geospatial analyses, using relevant geodemographics and related matter.
We need to knit together different types of geographic representations to see the larger picture.
Shapefiles with integrated
demographic-economic data enable us to perform these important operations.
Market Analysis & Shapefiles. The map at the right shows relationships of branch bank locations, customers, census tracts and streets.
Click the graphic for a larger zoom-in view (then press F11 key for best view). Here the street detail appears. Analysis
might be focused on sub-tract areas such as the red hatched block group. A profile of that block group is displayed --- these characteristics
are based on the integrated subject matter contained in the corresponding block group shapefile. This brief example illustrates how
shapefiles described in this section can be knitted together to provide focused insights.
School Demographic Analysis. It is hard to figure out when a school attendance zone filled with houses of empty nesters
will turn over to the next generation of homeowners with kids who will attend a particular elementary school.
Houses in some school districts might be priced above the point where many immigrants would be moving in. Others not.
It is not just that the children of the baby boomers are having children. The next spike would get blunted because generations
come a lot closer together for some groups compared to others.
Florida, for example, would be skewed because of retirees -- yet having a rapidly increasing school age population.
There are huge expanses of new-looking subdivisions in Florida and associated huge elementary schools and middle schools.
To examine these issues requires shapefiles used in a GIS application -- the attendance zones, school locations, demographics by school district
and sub-areas, geocoded student data, and so on. This example illustrates that having shapefiles for use in a GIS is a basic "enabler"
for analysis. The next and ongoing part of the analyses are the demographics -- subject matter data conveyed by the shapefiles.
School Districts: contact us and provide your school district name and state (in the message section)
and we will provide a GIS project with shapefiles for your school district, schools, and related places/counties.
Please use your school district e-mail address.
There is no fee. You will be able to use your school district map project with the no fee
CommunityViewer software.
Proximity GeoDemographic Shapefiles
Proximity develops and provides access to wide-ranging shapefiles.
Demographic-economic data already integrated into the shapefiles enable you to immediately make thematic maps, examine patterns, and perform
geospatial analyses/queries.
This section provides information on how to order shapefiles.
Unless otherwise stated, instructions for downloading files will be sent by e-mail normally within one business day of when the order is received.
Files only available on DVD will be shipped to the address provided normally within one business day of when the order is processed.
All shapefiles are distributed as NAD 83, geographic, no projection and in decimal degrees.
These shapefiles may be used directly with the Proximity
CommunityViewer software or any software that can process shapefiles.
Shapefiles are licensed for end-use (no redistribution) on a perpetual use basis and licensed
to the individual/group purchasing the license.
Proximity also develops custom shapefiles and geodemographic data to meet specific application requirements.
Shapefile examples are school attendance zones, geocoded address data and special study areas.
We develop custom current demographic estimates and projections and integrate these data into shapefiles.
Other types of files are available in addition to those listed below.
Contact us with questions or special requests.
Ordering Shapefiles. Shapefiles that can be ordered are organized into three sections:
• Census Blocks, Block Groups and Road/Streets (non-smoothed)
• National Scope Shapefiles (smoothed)
• National Scope Shapefiles (non-smoothed)
Smoothed shapefiles are "processed" versions of the original, more detailed and more precise shapefile.
Some boundary sections are linearized by removing vertices which do not add too much change in the boundary section -- when viewed as a larger
geographic area. Precision is lost with the smoothing process. Advantages of smoothed shapefiles are than they are smaller and display faster.
Non-smoothed lines/boundaries enable you to show different layers in a map
(e.g. representing streets and congressional district shapefiles) and have lines and boundaries match exactly.
When smoothed boundaries are used, the lines/boundaries may not match exactly with lines/boundaries in other layers.
Smoothed boundaries may be acceptable for larger areas such as counties, metros, and states, but not for smaller area such as blocks, tracts and streets.
Census Blocks, Block Groups and Road/Streets
The following files are non-smoothed (click link then press F11, for more information),
maximum detail vertices (best precision available) shapefiles.
Where applicable, boundaries in these files extend to 3-mile limit in coastal areas.
White House-Capitol Area
Census Blocks - Click for larger View
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U.S. Census Block Groups -- $1,195
# NG01
Integrated demographics: DP1 .. DP2 .. DP3 .. DP4
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White House-Capitol Area
Streets - Click for larger View
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U.S. Roads/Streets -- $1,295
# NR01 -- DVD |
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State by Roads/Streets -- $395
# SR01 |
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County by Roads/Streets -- $95
# CR01 |
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National Scope Shapefiles (smoothed)
The following files are smoothed (click graphic at right, then press F11, for more information) Census 2000 vintage shapefiles unless otherwise noted. Most of these files may be downloaded using the
CommunityViewer software client/server module without fee (state by state files
rather than single national file).
Smoothed vs Non-Smoothed Shapefiles
Congressional Districts - Click for details
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U.S. 110th Congressional Districts -- $95
February 2007 vintage
# NS_CD110_01 |
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U.S. Core Based Statistical Areas -- $195
December 2006 vintage
# NS_CBSA_01 |
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U.S. Counties -- $95
# NS_CTY_01 |
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U.S. Places -- $95
# NS_PLC_01 |
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U.S. School Districts -- $295
# NS_SD_01 |
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U.S. ZIP Codes (ZCTA) -- $195
# NS_ZCTA_01 |
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U.S. Census Tracts -- $295
# NS_TRC_01 |
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National Scope Shapefiles (non-smoothed)
The following files are non-smoothed (click graphic at above right, then press F11, for more information), maximum detail vertices (best precision available) shapefiles.
Where applicable, boundaries in these files extend to 3-mile limit in coastal areas.
U.S. 110th Congressional Districts -- $495
March 2007 vintage
# ND_CD110_01 |
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U.S. Places -- $995
Boundaries as of January 2006
# ND_PLC_01 |
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U.S. School Districts -- $1,695
2005-06 as defined by state education agencies
(view sample use)
# ND_SD_01 |
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U.S. School Districts w/Subject Matter -- $2,495
Same as # ND_SD_01 with
subject matter data
# ND_SD_02 |
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U.S. K-12 Public Schools -- $1,695
102,000+ schools; 2005-06 as defined by state education agencies
(view sample use)
# ND_SC_01 |
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U.S. K-12 Public Schools w/Subject Matter -- $2,495
Same as # ND_SC_01 with
subject matter data (excludes block group demographics)
# ND_SC_02 |
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U.S. K-12 Private Schools w/Subject Matter -- $1,495
Approximately 30,000 schools; 2005-06 school year; see
subject matter items
# ND_SP_01 |
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U.S. ZIP Codes (ZCTA) -- $995
# ND_ZCTA_01 |
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U.S. Census Tracts -- $995
# ND_TRC_01 |
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Market Analysis & Shapefiles. The map at the right shows relationships of branch bank locations, customers, census tracts and streets.
Click the graphic for a larger zoom-in view (then press F11 key for best view). Here the street detail appears. Analysis
might be focused on sub-tract areas such as the red hatched block group. A profile of that block group is displayed --- these characteristics
are based on the integrated subject matter contained in the corresponding block group shapefile. This brief example illustrates how
shapefiles described in this section can be knitted together to provide focused insights.
