Middlesex County, NJ has recently completed the Local Update of Census Addresses Operation (LUCA) project during the spring and summer of 2018. This presentation will explain the methodology used to submit address data for the County and the 25 municipalities. County staff will explain how this data can be used as a baseline for address information while still adhering to the confidentiality regulations. The presentation will also consist of project management methods for working together as a County to submit the best available address information for the 2020 Census. This project served as the basis of our goal for Enterprise GIS within Middlesex County.