POLIDATA Apportionment-2000 Census--Document Link Page

Document Title: APPORTIONMENT FACTOIDS, The Official Numbers
Congressional Reapportionment: Winners and Losers in 2000

Subject Keywords: CENSUS ADJUSTMENT; SAMPLING AND ESTIMATION; CONGRESSIONAL APPORTIONMENT; U.S. HOUSE; 2000 CENSUS

Dec 29, 2000. APPORTIONMENT FACTOIDS
A review of the seven Congressional apportionments since 1940 produces a few factoids.

1. Most states affected: 24 for the 1960 census.
2. Most states gaining: 11 for the 1980 census.
3. Most states losing: 16 for the 1960 census.
4. Most seats shifted: 19 for the 1990 census.
5. Largest single gain for a state: CA for the 1960 census.
6. Largest single loss for a state: NY for the 1980 census.
7. Number of times CA was the largest gainer: 5 of the last 7.
8. Number of times either NY and/or PA were the largest losers: 7 of the last 7.
9. Number of states that had ever gained (1940-1990) 2 seats or more: 3-CA, FL, TX.
10. Number of states that have ever gained (1940-2000) 2 seats or more: 5-CA, FL, TX and now AZ and GA.
11. Number of states that have ever lost (1940-2000) 3 seats or more: 2-NY and PA.
12. Number of states that have ever lost (1940-2000) 2 seats or more: 9-AR, IL, MA, MI, MO, NY, OH, OK and PA.
13. Number of states that have gained at least 1 seat every apportionment (1940-2000): 2-CA and FL.
14. Number of states that have lost at least 1 seat every apportionment (1940-2000): 1-PA.
15. Number of states that have stayed the same number of seats (1940-2000): 9; 4 At-Large: AK, DE, VT and WY; 4 at 2 seats: HI, ID, NH, RI; & SC at 6.
16. Number of single-member At-Large states following the 1930 census: 6-AZ, DE, NV, NM, VT and WY.
17. Number of single-member At-Large states following the 2000 census: 7-AK, DE, MT, ND, SD, VT and WY.
18. Number of CDs in ten largest states in 1930: 230 (250 EV), in ten smallest states in 1930: 14 (34 EV).
19. Number of CDs in ten largest states in 2000: 236 (256 EV), in ten smallest states in 2000: 13 (33 EV).
20. Seats by Sections of the nation in 1940: East/Midwest vs. South/West, 251 to 184 (58% to 42%).
21. Seats by Sections of the nation in 2000: East/Midwest vs. South/West, 183 to 252 (42% to 58%).
22. Largest relative increase in size, (1940-2000): AZ (from 2 to 8) and FL (from 6 to 25).
23. Largest relative decrease in size, (1940-2000): MT, ND, SD (from 2 to 1), and WV (from 6 to 3).
24. Most Populous Congressional District in 2000: MT at 902,195; smallest: WY at 493,782.
25. Average population per Congressional District: 647,000 (281,424,177/435).
26. Number of states with State Senate districts more populous than Congressional Districts: CA and TX.
27. Most populous Legislative Districts in 2000: CA Senate at 847,000 and TX Senate at 673,000 (persons per member).
28. Least populous Legislative Districts in 2000: NH House at 3,100 and VT House at 4,100 (persons per member).
29. State with largest number of seats: VA (1789-1800); NY (1810-1960), CA (1970-2000).
30. Number of times PA was state with second largest number of seats: 15 (1789 tied with MA, 1810-1940, and 1950 tied with CA).

Dec 29, 2000. NATIONAL AND REGIONAL TOTALS FOR 2000 CENSUS.

• Total Resident Population (50 states+DC) 281,421,906 (13% higher than 1990)
• Total Overseas Population (50 states+DC) 576,367 (37% lower than 1990)
• Total Apportionment Population (50 states only) 281,424,177 (13% higher than 1990)
• Total Population (50 states+DC+Puerto Rico): 285,230,516

Dec 28, 2000. APPORTIONMENT OF THE U.S. HOUSE, FOR THE 108TH-112TH CONGRESSES.
The constitutional purpose of the census, the apportionment of seats in the U.S. House of Representatives for the peaceful transfer of political power, will once again be commenced by today's release by the Bureau of the Census of the apportionment population.

Note that the apportionment population differs from data that will be subsequently released in at least two ways.

• First, the apportionment population includes overseas military population assigned to the several states by the Department of Defense. In 1990, the addition of these persons to the so-called resident population were enough to flip a seat from Massachusetts to Washington state.
• Second, the apportionment population is not adjusted for the net differential undercount, as subsequent data may be. This is the only item on which everyone agrees following the 1999 Supreme Court case.

• Apportionment maps summarizing the changes can be found on our site.
• Information from the Census Bureau can be found here.
• More in depth review material from the decade's annual estimates can be found at out census portal.
• See also, a note below for Dec. 8, 2000 on the 2000 Presidential election and apportionment.
• The update on this note with the new numbers is Bush 278-Gore 260, with additional seats added to the shift (Bush picks up 1 for FL, 1 for NC, loses 1 for IN; Gore loses 1 for MI).

• Eleven states in electoral votes for 2004-2008 now produce 271 votes, 2 more than needed.
• CA-55, TX-34, NY-31, FL-27, IL-21, OH-21, PA-21, OH-20, MI-17, GA-15, NJ-15, NC-15.
• 2000 Results: 5 for Gore, 6 for Bush.