TO THE HEADS
OF EXECUTIVE DEPARTMENTS AND ESTABLISHMENTS
Revised Statistical Definitions of Metropolitan Areas (MAs) and
Guidance on Uses of MA Definitions
This Bulletin establishes two new Metropolitan Statistical Areas
(MSAs). It also provides guidance on the use of the statistical
definitions of MAs.
Pursuant to 44 U.S.C. 3504(e)(3) and 31 U.S.C. 1104(d) and Executive
Order No. 10253 (June 11, 1951), the Office of Management and
Budget (OMB) defines MAs for use in Federal statistical activities.
OMB updates these definitions each June, adding new areas that qualify
as MAs and cities that qualify as central cities for MAs.
MSAs: Auburn-Opelika, Alabama is defined as a Level D MSA
(FIPS Code 0580) effective June 30, 1999. The Auburn-Opelika, Alabama
MSA comprises Lee County, Alabama. The MSA's central cities are
Auburn, Alabama and Opelika, Alabama. Corvallis, Oregon, is defined
as a Level D MSA (FIPS Code 1890) effective June 30, 1999.
The Corvallis, Oregon, MSA comprises Benton County, Oregon. The
MSA's central city is Corvallis, Oregon.
This Bulletin gives the definitions of all MAs in the United States
and Puerto Rico based on the standards published on March 30, 1990,
in the Federal Register (55 FR 12154-12160), the 1990 Decennial
Census data, and 1998 Census Bureau population estimates. A total
of 261 MSAs are recognized. There are 19 Consolidated Metropolitan
Statistical Areas (CMSAs), consisting of 76 Primary Metropolitan Statistical
Areas (PMSAs). List I provides titles and definitions of all MSAs;
List II presents similar information for CMSAs and PMSAs. List III
identifies the MSAs, CMSAs, and PMSAs in each State. List IV provides
titles and definitions for the New England County Metropolitan Areas
(NECMAs). MSAs, PMSAs, and NECMAs are categorized by their 1990 population
size, as follows:
Level A --
Areas of 1 million or more
Level B -- Areas of 250,000 to 999,999
Level C -- Areas of 100,000 to 249,999
Level D -- Areas of less than 100,000
of MA Definitions: All agencies that conduct statistical
activities to collect and publish data for MAs should use the most
recent definitions of MAs established by OMB.
and maintains the definitions of MAs solely for statistical purposes.
In periodically reviewing and revising the MA definitions, OMB
does not take into account or attempt to anticipate any nonstatistical
uses that may be made of the definitions, nor will OMB modify
the definitions to meet the requirements of any nonstatistical
that some legislation specifies the use of MAs for programmatic
purposes, including allocating Federal funds. For example, as
called for by the Social Security Act, the Health Care Financing
Administration uses MAs to define labor market areas and gather
hospital wage data that are used in developing a hospital wage
index for the labor-related portion of a hospital's standardized
Medicare payment. We will continue to work with the Congress to
clarify the foundations of the MA definitions and the resultant,
often unintended consequences of their use for nonstatistical
In a case
where there is no statutory requirement and an agency elects to
use the MA definitions in a nonstatistical program,
it is the sponsoring agency's responsibility to ensure that the
definitions are appropriate for such use. When an agency is publishing
for comment a proposed regulation that would use the MA definitions
for a nonstatistical purpose, the agency should seek public comment
on the proposed use of the MA definitions. Please refer to M-94-22
on Use of Metropolitan Area Definitions, issued by OMB on May
5, 1994, for further information.
of MA Definitions: This bulletin is available electronically
from the OMB home page at http://whitehouse.gov/OMB; go
to Bulletins. Copies of the list of MAs as of June 30, 1999, are
available from the National Technical Information Service (NTIS),
Document Sales, 5285 Port Royal Road, Springfield, VA 22161 (703-605-6000
or 1-800-553-6847) (Accession Number PB99-132698). This list is
also available through NTIS in electronic form (Wordperfect) (Accession
Inquiries concerning MA standards and the statistical uses of MA
definitions should be directed to Suzann Evinger (202-395-3093).