On Monday, April 26, 2021, the Census Bureau released the Census 2020 population by state data, also known as apportionment data. These counts are used to divide up the seats in the U.S. House of Representatives among the 50 states. We can use this first Census 2020 data release to calculate population growth by state for 2020.  

My partner, Anthony, built the data viz below so you can see how your state(s) of interest grew. The idea behind this visualization is that you can tell at a glance that “this state is growing [faster than | about the same as | slower than] the US or other states as well as itself.”

Population Growth by State 2020 Data Visualization

2020 Residential Population Percent Population Change
1990-2000 2000-2010 2010-2020
United States 331,449,281
Alabama 5,024,279
Alaska 733,391
Arizona 7,151,502
Arkansas 3,011,524
California 39,538,223
Colorado 5,773,714
Connecticut 3,605,944
Delaware 989,948
District of Columbia 689,545
Florida 21,538,187
Georgia 10,711,908
Hawaii 1,455,271
Idaho 1,839,106
Illinois 12,812,508
Indiana 6,785,528
Iowa 3,190,369
Kansas 2,937,880
Kentucky 4,505,836
Louisiana 4,657,757
Maine 1,362,359
Maryland 6,177,224
Massachusetts 7,029,917
Michigan 10,077,331
Minnesota 5,706,494
Mississippi 2,961,279
Missouri 6,154,913
Montana 1,084,225
Nebraska 1,961,504
Nevada 3,104,614
New Hampshire 1,377,529
New Jersey 9,288,994
New Mexico 2,117,522
New York 20,201,249
North Carolina 10,439,388
North Dakota 779,094
Ohio 11,799,448
Oklahoma 3,959,353
Oregon 4,237,256
Pennsylvania 13,002,700
Puerto Rico 3,285,874
Rhode Island 1,097,379
South Carolina 5,118,425
South Dakota 886,667
Tennessee 6,910,840
Texas 29,145,505
Utah 3,271,616
Vermont 643,077
Virginia 8,631,393
Washington 7,705,281
West Virginia 1,793,716
Wisconsin 5,893,718
Wyoming 576,851
Sources for the above visualization
  • 1990 All Geographies Except Puerto Rico – https://www.census.gov/data/tables/1990/dec/1990-apportionment-data.html
  • 1990 Puerto Rico – https://www2.census.gov/programs-surveys/popest/tables/1990-2000/municipios/totals/pr-99-1.txt
  • 2000 – https://www.census.gov/data/tables/2000/dec/2000-apportionment-data.html
  • 2010 – https://www.census.gov/data/tables/2010/dec/2010-apportionment-data.html
  • 2020 – https://www.census.gov/data/tables/2020/dec/2020-apportionment-data.html

You can get the same visualization above when you purchase Radius Reports for counties. Using the population projection data in the report, you can say “this county, where I’m interested in opening my new business, is growing [faster than | about the same as | slower than] the state.”

Where’s the rest of the Census 2020 data?

It’s coming. I still haven’t heard a release date for the Demographic and Housing Characteristics File (aka the good stuff that we all want — data for small geographies). I will be updating the 2020 Census Data Release Update blog post as I hear more.

Other Highlights from the Census Bureau’s 2020 Apportionment Data Release

Yesterday, the Census Bureau released apportionment data which includes the total U.S. Population. As of April 1, 2020, we were 331,449,281 people strong.

Census 2020 Residential Population

As a country, our population is increasing, but the growth rate slowed a bit over the past 10 years. As you can see below, the percent change dropped from 9.7% in 2000 – 2010 to 7.4% in 2010 – 2020. In fact, the Census Bureau staff mentioned that this is one of the slowest population growth periods we’ve had in our nation’s comparatively short history.

Census 2020 Percent Change

The South and West regions are growing faster than the other regions. Must be all of that sunshine and warmth!

US Census Regions Population Change 2010 to 2020

California and Wyoming are not that different if you are looking at land area but look at the huge difference in the population.

States with the Largest and Smallest Population in 2020

Most states grew in population during the 2010 – 2020 time period with Utah being the fastest growing state. Only 3 states had a decrease in population with West Virginia declining the most.

States with the Largest and Smallest Population Increase and Decrease in 2020

The above images are from the US Census Bureau’s Apportionment News Conference.