	Introduction

According to the Office of Personnel Management (OPM), the federal workforce is composed of an estimated 2.1 million civilian workers, and several federal agencies collect, compile, and publish statistics about this workforce. This report focuses on differences in methodologies, including exclusions, and the frequency of data collection employed by OMB and OPM to determine the size and scope of the federal workforce. These differences will facilitate the selection of appropriate data for specific purposes. Office of Management and Budget

OMB is the largest component of the Executive Office of the President. Consideration of Sources

The resources described in this report contain data often requested by Members or congressional staff.
This report describes online tools, reports, and data compilations created by the Office of Management and Budget (OMB) and the Office of Personnel Management (OPM) that contain statistics about federal employees and the federal workforce.
The report also describes key characteristics of each resource and briefly discusses selected methodological differences, with the intention of facilitating the selection of appropriate data for specific purposes. This report is not intended to be a definitive list of all information on the federal workforce. It describes significant and recurring products that contain specific data often requested by Members or congressional staff.