dliden/2020_Census_Reapportionment

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Overseas (military/federal civilian) population component of 2020 Census Apportionment Population

2020 Census Overseas Population

State Population used to determine apportionment counts following 2010 census

2010 Census Apportionment Population

Resident population component of 2010 Census Apportionment Population

2010 Census Resident Population

State Population used to determine apportionment counts following 2020 census

2020 Census Apportionment Population

Overseas (military/federal civilian) population component of 2010 Census Apportionment Population

2010 Census Overseas Population

Resident population component of 2020 Census Apportionment Population

2020 Census Resident Population

U.S. State Name (column includes U.S. Total, U.S. and Puerto Rico total, District of Columbia, and Puerto Rico)

State

# 2010 and 2020 Apportionment Populations

This repository contains state-level population data used to inform congressional apportionment following the 2010 and 2020 Censuses.

## Usage Notes

From the U.S. Census Bureau. The Apportionment population

> includes the resident population for the 50 states, as ascertained by the Twenty-Fourth Decennial Census under Title 13, United States Code, and counts of U.S. military and federal civilian employees living overseas (and their dependents living with them overseas) allocated to their home state, as reported by the employing federal agencies. Overseas is defined as any location outside the 50 United States and the District of Columbia. The apportionment population excludes the population of the District of Columbia and Puerto Rico.

## Data Source

Bureau, US Census. “2020 Census Apportionment Results.” The United States Census Bureau. Accessed June 1, 2021. [https://www.census.gov/data/tables/2020/dec/2020-apportionment-data.html](https://www.census.gov/data/tables/2020/dec/2020-apportionment-data.html). Table A: Apportionment Population, Resident Population, and Overseas Population: 2020 Census and 2010 Census.

2010 and 2020 Apportionment Populations

Count of representatives apportioned to each state following the 1960 census

1960

Count of representatives apportioned to each state following the 1950 census

1950

Count of representatives apportioned to each state following the 1940 census

1940

Count of representatives apportioned to each state following the 1920 census

1920

Count of representatives apportioned to each state following the 1910 census

1910

Count of representatives apportioned to each state following the 1930 census

1930

Count of representatives apportioned to each state following the 2020 census

2020

Count of representatives apportioned to each state following the 2010 census

2010

Count of representatives apportioned to each state following the 2000 census

2000

Count of representatives apportioned to each state following the 1990 census

1990

Count of representatives apportioned to each state following the 1980 census

1980

Count of representatives apportioned to each state following the 1970 census

1970

State Name (Also includes "Total" row, which includes the count of all representatives in a given year)

# Apportionment Counts from 1910 to 2020

This table contains the counts of House seats apportioned to each state from 1910 through 2020.
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## Usage Notes

These data can also be obtained using the "Historical Apportionment" table. This table is provided for convenience: it only includes the apportionment counts (no populations), and it is limited to the 50 states (Puerto Rico and District of Columbia are not relevant to apportionment count calculations).

## Data Source

Bureau, US Census. “2020 Census Apportionment Results.” The United States Census Bureau. Accessed June 1, 2021. [https://www.census.gov/data/tables/2020/dec/2020-apportionment-data.html](https://www.census.gov/data/tables/2020/dec/2020-apportionment-data.html). Table C1. Number of Seats in U.S. House of Representatives by State: 1910 to 2020.

Apportionment Counts 1910 to 2020

Resident Population of country/state/region

Resident Population

Resident Population Density

State ranking (high to low) of population density, by decennial census

Resident Population Density Rank

Number of representatives awarded after apportionment following each decennial census

Number of Representatives

Change in the number of representatives since the prior apportionment

Change in Number of Representatives

U.S. Population divided by the number of representatives

Average Apportionment Population Per Representative

State, Region, or Nation. Note that Puerto Rico and District of Columbia are coded as "State" per the census source data.

Geography Type

Year of decennial census on which each apportionment was calculated (1910-2020)

Year

Percent Change in resident population from prior census

Percent Change in Resident Population

Name

# Historical Apportionment Data

This table contains data on state and regional populations, population densities, and apportionment changes following each decennial census from 1910 through 2020.

# Data Source

US Census Bureau. “Historical Apportionment Data (1910-2020).” Census.gov. Accessed June 9, 2021. [https://www.census.gov/data/tables/time-series/dec/apportionment-data-text.html](https://www.census.gov/data/tables/time-series/dec/apportionment-data-text.html).

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