Where does the data in the New Jersey Data Book come from?

The New Jersey Data Book uses official statistics from a variety of federal, state and county government sources including the U.S. Census Bureau; departments within New Jersey state government, including: Labor and Workforce Development; Human Services; Community Affairs; the N.J. divisions of State Police, Taxation; and County Boards of Election, among others. A list of sources can be found in Sources & Notes on this site.


How do I know the data are accurate?

The Center for Government Services applies a rigorous protocol to the collection, validation and usage of statistics and information in the New Jersey Data Book to assure their accuracy and reliability. New Jersey statistics and information are checked multiple times before publication, and often vetted with their original sources.  


Can I access data from previous New Jersey Legislative District Data Books?

Version 2.0  of the NJ Data Book online publication includes data from 2014 edition of the New Jersey Legislative District Data Book, which was the last printed edition, with some data dating back to 1980s editions. Visit the Data Availability page to see which years are available for the data you are interested in.

NEW:  in 2015, data going back to the 1980 U.S. Census has been added. Eventually, the online New Jersey Data Book will include the historic data from all 39 New Jersey Legislative District Data Books going back to 1976.


How are data selected for the Data Book? Who decides?

A committee at the Rutgers Center for Government Services annually evaluates available, reliable data and decides which data sets should be included. It is important to note that data sources are sometimes discontinued and new ones added. We are always open to suggestions from users on what to include. Please contact us or send email to njdatabook@docs.rutgers.edu to suggest new data sets.  

Wondering what the differences is between the NJ Data Book and the NJ Data Bank?   The NJ Data Book has been published by Rutgers since 1976.  Using rigorous protocols and official sources, data is collected and reported over decades.  Other sources of New Jersey data provide links to web sites, categorize data by types and sources or reflect data collected from the NJ Data Book.


When are new editions or new data published on the site?

While the data sets we publish are updated by government agencies at different times of the year, the New Jersey Data Book will be updated annually, when all data sets are available for the previous year. This provides users with a consistent resource for making comparisons. 


May I reproduce a table I created on this website in a document for academic or legal purposes?

The data may be used by any user for their purposes; however, we cannot guarantee their validity for specific purposes. Tables downloaded from this site will contain a watermark identifying their source as Rutgers University – New Jersey Data Book; however, we also request the use of citations when reproducing tables or data from this online or hard-copy publication.  


When I register, how is my personal information, such as my email address and organization, used?

Registration information, including email addresses, will not be shared for any purpose. Registrations will enable us to determine which data sets are used most frequently and what types of organizations are making use of them so that we can continue to improve the data book’s usefulness. We will inform users by email of updates to the New Jersey Data Book.  Please read our privacy policy.


Can I submit inquiries for particular data? 

The New Jersey Data Book enables users to search for, compare and download data easily. We do not have the resources to respond to individual requests for specific data. We will, however, evaluate feedback and suggestions for enhancing the New Jersey Data Book so that it responds to the needs of users.


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