- 2010 population and housing density by block group
This is a 30m grid of population density based on the 2010 block population and block group
land area and TIGER "shapefiles" (metadata | arctar (85MB zipfile))
- 2000 total population and housing unit count by block group
This is tabular data from summary file 1 aggregated by block group. The
block group identifier (BGI) composed of state, county, tract, and block group number
is used to link the demographic data to 2000 block group
polygons from TIGER Line files or other
block group boundary files.
Metadata ||
INFO file ||
DBF file
- 2000 population density
This is a 100m grid of population density based on the 2000 block group population and
land area (see above) and the generalized
block group boundaries.
- Map showing percent change in population from 1990-1997
for NAWQA study units - data based on 1990 county population and
1997 county population estimates from the Bureau of the Census:
Postscript file||
PDF file
- 1990
census of population and housing
This is a point coverage of the 1990 Census of Population and Housing
for the conterminous United States. The coverage contains the location
of population points retrieved at the block group level and the 1990
population and housing unit counts for each point. We also have
corresponding files for
Alaska and
Hawaii,
but they are not
documented.
- 1990 population density
This is a 100m grid of population density based on the 1990 block group population and
land area and the
block group boundaries.
- 1990 total
population by block group
This is an INFO file containing the 1990 total population by block
group. The totals were calculated using the ARC FREQUENCY command on
the USPOP90 coverage .pat file. The frequency item was block group
and the summary item was population.
(file name: uspop90.freq2.e00.gz-- 4,778,641 bytes)
- STF 3A extract
of source of water and sewage disposal
This is an INFO lookup table containing housing unit counts,
source of water, and sewage disposal method by block group.
Consult the
metadata for
more details.
(file name: hu90.e00.gz-- 6,087,987 bytes)
- 1970, 1980, 1990
county population data
This data set consists of two INFO lookup tables containing county
population data for 1990 and for 1970/1980, respectively, and a
blank county coverage for reference to the lookup tables using FIPS
county code. The lookup tables can be used with another county
coverage as long as the coverage contains county FIPS codes.
(file name: popdiff.e00.gz-- 860,754 bytes)
-
1994 NAWQA study unit block group coverages
This data set consists of block group polygons for the 1994 NAWQA
study units and includes 1990 total population and population density.
-
Updated land use coverages
This data set consists of the 1970's land use data updated with 1990 population
data to indicate new residential development.
- 1980
census of population and housing
This is a point coverage of the 1980 Master Area Reference File
for the conterminous United States. Each point repesents the center
of a census tract, although some tracts were split. Estimates of
1970, 1982, 1984, and 1985 population were inferred from county population
data.
- CensusCD
1980 (advertisement)
It took until 1999, but finally 1980 Census data is in a format
that anyone can use. Time series analysis on areas as small as a
Census Tract, can now be done with over 1,500 variables. Mapping
software and boundaries for 1980 tracts, counties, states, places,
and MCD, are included.
- CensusCD+Maps
(advertisement)
50 gigabytes of US demographic data (1790-2002) and
geographic boundaries, with estimates, projections, consumer
expenditure, time series, historical data, as well as a complete
set of 1990 Census data.
