About the New Jersey Data Book

For more than 70 years, New Jersey’s legislative districts corresponded with the boundaries of its 21 counties. That began to change in the mid-1960s following amendments to the state constitution. The number of districts grew and no longer followed county boundaries, yet statistical data used by legislators to understand their constituencies continued to be organized by county, rather than district.

The first New Jersey Legislative District Data Book was published in 1976 by Rutgers Bureau of Government Research under the leadership of Dr. Ernest C. Reock, Jr. in an effort to give legislators a more accurate picture of the districts they represented. The Data Book provided maps, descriptions and a wide range of statistical data on each of New Jersey’s 40 districts and the municipalities comprising them.

The Bureau and its successor, the Center for Government Services, published new editions of the Data Book until 2015 when the data was converted to electronic format.  Prior data and new data has since been added to the njdatabook.rutgers.edu, providing updated statistics and adding new data sets.  The publication became an important resource for government, researchers, the media and citizens, found in libraries and government offices throughout the state.  Over the years the data bank of New Jersey data has grown. No other source of New Jersey data captures the historical trends reflected here.

New Jersey Data Book Transitions to Digital Version

The NJ Data Book has been offered on electronic media since 1994, in addition to the printed edition.

As computer technology evolved to make it easier to access and manipulate digitized information, the Center for Government Services moved ahead to transition the Data Book to an online platform in 2014. This change allows users to easily select data sets for analysis, and create and download tables. Like its hardcopy version, the Data Book Online provides demographic, fiscal, geographic, school and political data on New Jersey’s counties, towns and legislative districts.

Enhancements to Online New Jersey Data Book

With the introduction of the online version of the New Jersey Data Book, users also will find enhancements made in the 2013 print edition. The data is now accessible by county as well as legislative district and includes new data sets on preschool population, food assistance (SNAP), unemployment and crime in the state’s 565 municipalities.  The online platform also includes data sets for population, geography, school performance, housing, government expenditures, property tax burden, voters and voter turnout, election results and income.  The New Jersey data book continues to expand the bank of data available for use by officials, citizens and scholars.

Both raw and computed data are available.

The New Jersey Data Book represents the most comprehensive web-based source of New Jersey statistics and information about New Jersey. For more information, send email to njdatabook@docs.rutgers.edu

Dr. Ernest C. Reock, Jr.



Have questions about using the NJ Data Book? Contact via email.