1970 County Group Definitions

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Detailed Composition

The table below provides links to composition tables for the county groups identified in the 1970 1% metro samples. (See CNTYGP97.)

Complete composition information for all 1970 county groups, nationwide, is also available in these files:

101-3901 Alabama, Connecticut, Delaware, Florida, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia
4001-7901 Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Mississippi, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, Wisconsin
8001-10501 Arkansas, Colorado, Illinois, Iowa, Kansas, Kentucky, Michigan, Minnesota, Missouri, Montana, Nebraska, North Dakota, Oklahoma, South Dakota, Tennessee, Wisconsin, Wyoming
10601-15500 Alabama, Alaska, Arizona, Arkansas, California, Colorado, Hawaii, Idaho, Louisiana, Mississippi, Montana, Nebraska, Nevada, Oklahoma, Oregon, New Mexico, Texas, Utah, Wyoming, Washington, Puerto Rico; Miscellaneous


Maps of 1970 county groups are provided through the links below. On the maps, the large numbers identify the first three digits of the county group code, and the smaller numbers identify the last two digits. (Leading zeros are not printed.)

Boundary File

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