Congressional Apportionment

Congressional Apportionment: 2010

Trends in congressional apportionment and the apportionment population—what it is, who is included, and what method is used to calculate it.

Strength in Numbers: Your Guide to Census 2010 Redistricting Data

This brochure explains where census numbers come from and the role they have in the way states redraw the boundaries of their legislative districts.

Censo del 2010 de Puerto Rico para la Redistribución de los Distritos

Este folleto explica de dónde provienen los números del censo y cómo son usados para determinar los límites de los distritos legislativos en Puerto Rico.

2010 Census Apportionment Results

Congressional seats are apportioned among the 50 states based on the latest decennial Census population counts.

2010 Census: Apportionment Data (Text Version)

2010 Census apportionment for the nation and states.

2010 Census: Apportionment Data Map

This interactive map widget shows 10 decades of apportionment history, current apportionment totals and our changing population through the past century.

The U.S. Census and the Amazing Apportionment Machine

Through animation, the U.S. Census Bureau explains how it uses the apportionment formula to ensure equal representation for all.