Data on the Neighborhoods of New York City and New York State

The Infoshare Community Information Service is a sophisticated tool
that lets planners, community activists, teachers, students,
researchers, and ordinary citizens view and analyze a vast array of
community and regional data.

InfoShare Online ("http://www.infoshare.org/") includes over 3000
neighborhood definitions and 50,000 items of data gathered during the
last decade on the neighborhoods. These include population statistics,
immigration trends, socio-economic indicators, birth and death data,
hospitalizations, local trade data, and much more.

Except for Demographic Projections, which are purchased from
commercial firms, all data files are obtained from City, State and
Federal government agencies. Community Studies of New York is in
constant contact with these agencies, and incorporates the newest data
as soon as it becomes available. Community Studies obtains from its
data sources data at the smallest geographic area at which it is
publicly available, usually census tracts and zip codes. To provide
data for other geographies, a series of overlap factors has been
developed which convert this small-scale data into these larger areas
of special interest. Such overlap factors are based upon the
distribution of residential housing, when this is available. In that
case, the overlaps approximate as closely as possible the distribution
of the population by residence. Where this residential data is not
available, geographic overlap factors are derived using standard
geographic mapping overlays.