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County and City Databook
http://www.census.gov/statab/www/ccdb.html
Overview
General description
County and City Databook is the official statistics for 1,078 cities,
all 3,141 U.S. counties, and 11,097 places of 2,500 or more inhabitants
in the United States about socioeconomic and housing data from the
1990 census and the surveys that update them business in your city
and county, median income, tax base, and more than 100 other variables
for counties and cities nationwide.
Geographic coverage
Counties, cities and places nationwide
Who collects it
The Bureau of the Census, U.S. Department of Commerce
How often
Irregular, earliest 1949, after that 1952, 1956, 1962, 1967, 1972,
1977, 1983, 1988, the latest 1994.
What is in it generally
"County and City Data Book" 1994
Subject content: Over 220 data items for states and counties; almost
200 data items for cities; and 33 items for places of 2,500 or more.
Vintage of data: 1987 through 1992. Examples: age, money and personal
income, population, education, health care and human services, housing
ownership and value, births, deaths, poverty, local government finance,
employment, etc. In addition, tables show data on business, banking,
climate, elections, and social programs. Data come from the Census
Bureau, other Federal government agencies and private organizations.
The data in this book are organized into four main data tables.
Table A presents 220 data items for the United States as a whole,
each census geographic region and division, and the 50 states and
the District of Columbia. Table B presents for each county and equivalent
area the same 220 data items shown in Table A. Table C presents
194 data items for cities (incorporated places with 25,000 or more
inhabitants in 1990). Table C differs somewhat in content from tables
A and B; as examples, climate data, shown for cities, are not available
for counties and physician data, shown for counties, are not available
for cities. Table D presents 1990 population and two 1990 census
income items for places with 2,500 or more inhabitants in 1990.
This table includes both incorporated places and census designated
places for all States and minor civil divisions (MCDs) for
the following 12 States: Connecticut, Maine, Massachusetts, Michigan,
Minnesota, New Hampshire, New Jersey, New York, Pennsylvania, Rhode
Island, Vermont, and Wisconsin.
Three tables of area rankings are featured in this publication
which highlight various data series. Table 1 presents the top 25
counties in the country for 64 variables along with the United States
total for comparison. Table 2 shows the top county in each state
for 24 different data items. Table 3 presents 36 data items and
rankings for the 77 cities with a 1992 population of 200,000 or
more.
How to access
CD-COMP-CCDB94 $150 Add 33% for international mailing FREE copy
of Statistical Abstract of the United
States: 1997 on CD-ROM when County and City Data Book, 1994 and
USA Counties, 1996 CD-ROMs are ordered
at the same time; cite product code CD-COMP97-KIT. Technical Documentation
included on disc (call Statistical
Compendia Staff, 301-457-1166 if
customer needs hard copy) For credit card or census deposit account
payment, call Customer Services, Bureau of the Census (Phone: 301-457-4100;
FAX: 888-249-7295 (toll-free) or 301-457-3842). If paying by check,
send a check payable to Commerce-Census to U.S. Dept. of Commerce,
Bureau of the Census, P.O. Box 277943, Atlanta, GA 30384-7943. Released
July 14, 1995 (http://www.census.gov/mp/www/rom/msrom3b.html)
Data dictionary
Rows and columns
describe the content of the database (Appendix D)
Area Rankings
Table 1. Top 25 County Rankings by Selected Subject
Table 2. Highest Ranking County in Each State by Selected Subject
Table 3. Cities with 200,000 or More Population Ranked by Selected
Subject
Tables
Table A: States
Table B: Counties
Table C: Cities 25,000 or More
Table D: Places 2,500 or More
Appendixes
Appendix A. Source of Notes and Explanations
Appendix B. Geographic Information
Appendix C. County Maps, by State
Appendix D. Table Outlines
Default values
A dash "-" represents zero.
"D" means data withheld to avoid disclosure of information
pertaining to a specific organization or individual.
"NA" means not available
The following terms are also used throughout this publication:
- An average is a number or value that is used to represent
the "typical value" of a group of members. It is a measure
of central tendency for a group of members.
- The mean is an average derived by summing the individual
item values of a particular group and dividing the total by the
number of items, e.g., average travel time to work. It is often
referred to simply as the "mean" or "average".
- The median of a group is the middle number or value when
each item in the group is arranged according to size, e.g., median
household income. It generally has the same number of items above
it or below it.
- A rate is a quantity or amount of an item measured in
relation to a number of units of another item, e.g., the number
of births per 1,000 resident population. The birth rate is obtained
by dividing the number of births for a given year by the resident
population as of a specified date and multiplying the result by
1,000.
- Per capita is a rate per individual, e.g., per capita
taxes.
Missing or suppressed data items (1994 County and City Data Book)
"S" means data suppressed; does not meet publication
standards.
"X" means not applicable.
"Z" represents a number or percent that rounds to less
than half the unit of measure shown.
Sampling methods
Needs the source of data for sampling methods.
Errors and reliability (1994 "County and City Data Book")
All data from Censuses, surveys, or administrative records are
subject to error arising from a number of factors: sampling variability
(for statistics based on samples), reporting errors in the data
for individual units, incomplete coverage, nonresponse, imputations,
and processing error.
For some items, details may not add to the totals shown: for example,
a State total may differ from the sum of its component counties,
or the United States total may differ from the sum of total 50 States
and the District of Columbia. Rounding of the data may be the reason
for these occurrences, or the total may include values that could
not be allocated to the lower geographic levels shown. Other examples
are generally footnoted in the tables or explained in the text.
The Bureau of the Census can not accept the responsibility for
the accuracy or limitations of the data presented in this publication
other than for those it collects. The responsibility for selection
of the material and for proper presentation, however, rests with
the Bureau.
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