The ICW US Digital Map Atlas
covers the 50 states, District of Columbia, and Puerto Rico.
The maps are organized into units of geography: by county
in 48 states, parishes in Louisiana, in Alaska the division
is boroughs and census areas and county equivalents in other
There are 17 to 40 plus layers
of information for every unit of geography: Block, Block Groups,
Tracts/BNA, MCD/CCD, Place, County, Reservation, and Alaskan
Native Lands, Elementary/Middle/Secondary/Unified School Districts,
CMSA/PMSA/MSA, Urbanized Area, water polygons, Congressional
Districts, voter precincts, landmark polygons and points,
key geographic locations, roads, major roads, airports and
railroad tracks, linear water features, other physical features,
ZCTA’s and Zip+4 centroids.
data sets can be derived from this national atlas.
For example one may be interested in a ZIP+4 coverage for
the entire US, a region, or a State. Perhaps a Tract or Block
Group table for the same geographic area is required. ICW
can assist the client in the creation of these types of custom
data sets or create custom data sets for the customer.
Direct linkage to demographic data
between the 2000 decennial census data products or third party
demographic providers can be accomplished quite easily. Blocks,
Block Groups, Tracts, Place, and other Census geography carry
the necessary FIPS and area codes with which to join demographic