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NJ Health Statistics
1997

POPULATION

Estimates

The population estimates presented in this report were prepared by the Population Division of the U.S. Bureau of the Census. The county estimates were provided by five-year age groups (0-4, 5-9,.......85 and over), sex (male, female), and four racial groups (white; black; American Indian, Eskimo and Aleut; and Asian and Pacific Islander) for July 1 of each year 1990 through 1997. Population estimates by Hispanic origin (Hispanic origin, non-Hispanic origin) are also available. This set of estimates is consistent with the postcensal estimates for the U.S. and the states by age, sex, race, and Hispanic origin for 1990 through 1997 published by the Census Bureau.

County estimates provided in this report were developed in a two-stage procedure. First, the Census Bureau generated a set of state estimates by single year of age (0,1,2,.....,85 and over), sex (male, female), modified race (white; black; American Indian, Eskimo and Aleut; and Asian and Pacific Islander), and Hispanic origin regardless of race (Hispanic and non-Hispanic). The state estimates were developed using a cohort-component methodology. In this methodology, births during a time period are added, deaths during the same time frame are subtracted and net migration for the period is applied to the population at the beginning of the time period, resulting in a population estimate for the end of the time period (or the beginning of the next).

The modified age, race, sex, and Hispanic origin files from the April 1, 1990 Census were used as the starting point for the process, which produced population estimates for July 1 of 1990, 1991, 1992, 1993, 1994, 1995, 1996, and 1997. After the cohort-component method had been used to produce detailed estimates of state estimates, the ratio method was used to make these estimates consistent with previously published state and national estimates. This was accomplished by controlling each year's estimates by age, sex, race, and Hispanic origin to the corresponding year's estimates for each state by age and sex that had been independently generated by Census Bureau staff and rounding these numbers to integers, while preserving their consistency with the state and national controls.

Starting with the April 1, 1990 modified Census counts for age, sex, and modified race/Hispanic origin and using the state estimates by age, sex, and race/Hispanic origin determined through use of the cohort-component method, the estimates for counties were developed using the ratio method of controlling to the state totals. The ratio method is a technique for adjusting data to sum to a pre-determined total. It consists of multiplying each data element by the ratio formed by dividing the desired total by the sum of the data. When there are multiple totals to which the data must be adjusted, as with the county estimates, the data are first partitioned into groups corresponding to the desired totals, then ratios are generated and applied for each group. These steps were repeated to obtain estimates for counties by age, race, Hispanic origin, and sex for each of the data years.

Estimates presented in this reported are distributed by five-year age groups, sex, and three racial groups -- white, black, and all other races -- for the state and each county in Tables P1 through P22 and for the Hispanic population (of any race) by sex and ten-year age groups for the state and counties in Table 23.

The figures presented here are part of an evolving project of the U.S. Census Bureau to develop postcensal population estimates for states and counties by age, sex, race, and Hispanic origin. Census Bureau staff expect to prepare estimates for years subsequent to 1997 and to annually revise the existing series of estimates back to 1990.

The Census Bureau does not consider these estimates to be accurate for each individual cell and recommends aggregating the individual cells to larger groups when the data are used for purposes of analysis.

Tables
Table P1 Population Estimates by Age, Race and Sex, New Jersey, 1997
Table P2 Population Estimates by Age, Race and Sex, Atlantic County, 1997
Table P3 Population Estimates by Age, Race and Sex, Bergen County, 1997
Table P4 Population Estimates by Age, Race and Sex, Burlington County, 1997
Table P5 Population Estimates by Age, Race and Sex, Camden County, 1997
Table P6 Population Estimates by Age, Race and Sex, Cape May County, 1997
Table P7 Population Estimates by Age, Race and Sex, Cumberland County, 1997
Table P8 Population Estimates by Age, Race and Sex, Essex County, 1997
Table P9 Population Estimates by Age, Race and Sex, Gloucester County, 1997
Table P10 Population Estimates by Age, Race and Sex, Hudson County, 1997
Table P11 Population Estimates by Age, Race and Sex, Hunterdon County, 1997
Table P12 Population Estimates by Age, Race and Sex, Mercer County, 1997
Table P13 Population Estimates by Age, Race and Sex, Middlesex County, 1997
Table P14 Population Estimates by Age, Race and Sex, Monmouth County, 1997
Table P15 Population Estimates by Age, Race and Sex, Morris County, 1997
Table P16 Population Estimates by Age, Race and Sex, Ocean County, 1997
Table P17 Population Estimates by Age, Race and Sex, Passaic County, 1997
Table P18 Population Estimates by Age, Race and Sex, Salem County, 1997
Table P19 Population Estimates by Age, Race and Sex, Somerset County, 1997
Table P20 Population Estimates by Age, Race and Sex, Sussex County, 1997
Table P21 Population Estimates by Age, Race and Sex, Union County, 1997
Table P22 Population Estimates by Age, Race and Sex, Warren County, 1997
Table P23 Estimates of Population of Persons of Hispanic Origin by County, Sex and Age, New Jersey, 1997


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