If you are familiar with the Census Bureau's widely popular DP1 to
DP4 demographic profile report products, here you will find all the
data that goes into them. We have one file per state/profile and a
national collection with higher level summaries. You get to choose
between the variable names that came with the data from the Census
Bureau or MCDC-assigned mnemonic names (e.g. v23 is the Bureau
name, Over65 is the MCDC mnemonic name). Percent variables as used in
the DP reports (but not included in the data files distributed) have
been added to the datasets. This is a very well-documented and
value-added collection. Geographic entities summarized are mostly
governmental units: states, counties, places, MCDs, metro areas, 106th
congressional districts and American Indian reservations. We have a
complete collection of data for all states and US summaries.
Same idea as the sf3prof collection (above), but the data used in these files are based on data collected on the
short form. So it is basic demographics: age, sex, race and ethnicity, as well as household composition and some basic
housing data (occupancy rates and tenure, for example.) This is the 2000 census equivalent of the dpro2010 collection based
on the 2010 census.
These files provide a geographic inventory for the 1980 census. Each record/observation describes the geographic codes associated with a 1980 geographic summary area, together with some basic population and housing counts, and pci (Per Capita Income - 1979). For some geographic levels there are internal point latitude-longitude coordinates and/or land areas.
The data are similar to the geographic headers portion of the 1980 Summary Tape File 1 files. Geographic units summarized are states, counties, MCDs (county subdivisions), places (cities), census tracts (BNA's), block groups and enumeration districts. Be sure to check out the extensive Readme.html file.
This popests/nchsbri subdirectory (not technically a filetype, but rather an important sub-filetype) contains special estimates commissioned by the NCHS (National Center for Health Statistics)
using "bridged" race categories,
i.e. using race standards established by OMB in 1977 rather than the current ones established in 1997.
The complete national collection has 4 datasets per state, 2 based on 1990 intercensal estimates and 2 based on post-2000
estimates. State and county level numbers with detail by single years of age, race (only 4 "bridged" values), sex and hispanic origin. Important raw data resource for demographer types. These data
are used in the MCDC's Population Estimates by Age dynamic web
application. Updated each summer with estimates through 7-1 of the previous year. These data get refreshed (and overwritten) annually,
between June and September. (Used to be closer to September, but in 2014 we got the data at the end of June for 2013).
County Business Patterns. Counts of businesses, total and by industry, with establishments by size. Also has employment and payroll
data. Data varies by geographic level, which includes nation, state, county, metro area and ZIP code. Complete data for years 2007-2009 were
added to this collection in Nov 2011 (following a 3-year hiatus), including ZIP level data for the first time. Data for 2010 and 2011
were added in July, 2013. These were the latest available data at that time.
IRS tax return data. These data sets provide summaries of personal income tax returns by year. Data include items
such as number of total returns, total gross income reported, total taxes paid, total deductions of various types, etc. The data
are tabulated at the county and ZIP code levels, along with state aggregates. Added to archive Feb., 2014.
In July, 2014 the IRS released the data for tax year 2012. There were signficant changes to the data, especially at the ZIP level.