This series of reports presents population estimates prepared under the auspices of the Federal-State Cooperative Program for Local. Population Estimates. The objective of this program is the development and publication of Stateprepared estimates of the population of counties using uniform procedures largely standardized for data input and methodology. The methods used have been mutually agreed upon by the individual States and the Bureau of the Census and were selected on the basis of the results of an extensive test of methods against the 1970 census conducted in late 1971 and early 1972.1 The estimates for July 1, 1971, and provisional estimates for July 1, 1972, shown here for counties in Idaho were prepared by the Division of Vital Statistics, Idaho State Department of Health. This agency was designated by the Governor to work with the Bureau of the Census in implementing and carrying out the Federal-State Cooperative Program. The estimates shown for July 1, 1971, are based on the average of: (1) The Regression 1For a more detailed description of the program, see Meyer Zitter, "Federal-State Cooperative Program for Local Population Estimates," The Registrar and Statistician, U.S. Department of Health, Education, and Welfare, January 1968, and "FederalState Cooperative Program for Local Population Estimates: Status Report, January 1971," The Registrar and Statistician, U.S. Department of Health, Education, and Welfare, April 1971. For a detailed analysis of the test results, see the forthcoming Current Population Reports, Series P-26, "FederalState Cooperative Program for Local Population Estimates: Test Results--April 1, 1970." -0.0280+ 0.4025 X + 0.1696 X2 + 0.0806 X3 +0.3072 X4; and (2) The Census Bureau's Component Method II, which employs vital statistics to measure natural increase and school enrollment as a basis for measuring net migration. The estimates made by the Census Bureau's Component Method II are specific to the civilian population under 65, with Medicare statistics used to estimate the resident population ages 65 and over. The total resident population is derived by adding to the estimates of the civilian resident population estimates of the military station strength in each county. The county estimates are then adjusted to State Component Method II. 2 2A general description of Component Method II and the Regression Method will be given in the forthcoming Current Population Reports, Series P-25, "Estimates of the Population of States, 1971 and 1972," to be published later this year. For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402, 10 cents. The provisional July 1, 1972 estimates were developed by adding the change between 1971 and 1972 Component Method II estimates to the 1971 estimate and adjusting the county estimates to agree with the provisional July 1, 1972 State estimate published in Current Population Reports, Series P-25, No. 488. Corresponding estimates for other States in the program will be published as they become available. The jointly prepared estimates for counties shown here are presented by the Bureau of the Census in lieu of preparing a separate set of estimates. These estimates for counties are consistent with independent State population totals regularly prepared by the Bureau of the Census and published in the P-25 series of reports. County populations for 1970 reflect corrections in the census count made since tabulations of the census. Counties with corrections of more than 500 are Bonneville and Boundary. The official 1970 resident State total shown on the table may differ slightly from the sum of the counties because of corrections made subsequent to the release of the State figure. The estimates presented in the table have been rounded to the nearest hundred without being adjusted to the State total, which was independently rounded to the nearest thousand. Percentages are based on unrounded numbers. ESTIMATES OF THE POPULATION OF IDAHO COUNTIES, JULY 1, 1971 AND JULY 1, 1972 (State estimates are shown to the nearest thousand, county estimates to the nearest hundred) 1Total does not agree with the sum of the counties due to corrections made to the county populations after release of the official State counts. 3,700 3,609 200 6.0 8,000 7,633 600 7.3 |