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Apportionment Data (Text Version)

Apportionment

Apportionment is the process of dividing the 435 memberships, or seats, in the House of Representatives among the 50 states based on the population figures collected during the decennial census.

State or Region 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010
United States
Avg. People per representative 210,328 0 280,675 301,164 344,587 410,481 469,088 519,235 572,466 646,952 710,767
Seats lost or gained 47 0 27 9 14 21 11 17 19 12 12
Alabama
Representatives 10 10 9 9 9 8 7 7 7 7 7
Avg. People per representative 213,809 0 294,027 314,773 340,194 408,343 496,555 555,723 580,373 637,304 686,140
Seats lost or gained 1 0 -1 0 0 -1 -1 0 0 0 0
Alaska
Representatives - - - - - 1 1 1 1 1 1
Avg. People per representative - - - - - 226,167 304,067 400,481 551,947 628,933 721,523
Seats lost or gained - - - - - 1 0 0 0 0 0
Arizona
Representatives - - 1 2 2 3 4 5 6 8 9
Avg. People per representative - - 389,375 249,631 374,794 434,054 446,905 543,573 612,998 642,585 712,522
Seats lost or gained - - 1 1 0 1 1 1 1 2 1
Arkansas
Representatives 7 7 7 7 6 4 4 4 4 4 4
Avg. People per representative 224,921 0 264,921 278,484 318,252 446,568 485,576 571,378 590,560 669,933 731,557
Seats lost or gained 0 0 0 0 -1 -2 0 0 0 0 0
California
Representatives 11 11 20 23 30 38 43 45 52 53 53
Avg. People per representative 216,051 0 283,412 300,321 352,874 413,611 467,415 525,968 573,832 640,204 704,566
Seats lost or gained 3 0 9 3 7 8 5 2 7 1 0
Colorado
Representatives 4 4 4 4 4 4 5 6 6 7 7
Avg. People per representative 199,643 0 258,712 280,824 331,272 438,487 445,354 481,472 551,319 615,983 720,704
Seats lost or gained 1 0 0 0 0 0 1 1 0 1 0
Connecticut
Representatives 5 5 6 6 6 6 6 6 6 5 5
Avg. People per representative 222,951 0 267,816 284,874 334,547 422,539 508,449 517,929 549,278 681,907 716,326
Seats lost or gained 0 0 1 0 0 0 0 0 0 -1 0
Delaware
Representatives 1 1 1 1 1 1 1 1 1 1 1
Avg. People per representative 202,322 0 238,380 266,505 318,085 446,292 551,928 595,225 668,696 785,068 900,877
Seats lost or gained 0 0 0 0 0 0 0 0 0 0 0
Florida
Representatives 4 4 5 6 8 12 15 19 23 25 27
Avg. People per representative 188,155 0 293,638 316,236 346,413 412,630 457,047 512,631 565,364 641,156 700,029
Seats lost or gained 1 0 1 1 2 4 3 4 4 2 2
Georgia
Representatives 12 12 10 10 10 10 10 10 11 13 14
Avg. People per representative 217,427 0 290,845 312,372 344,458 394,312 462,731 546,427 591,674 631,306 694,826
Seats lost or gained 1 0 -2 0 0 0 0 0 1 2 1
Hawaii
Representatives - - - - - 2 2 2 2 2 2
Avg. People per representative - - - - - 316,386 392,451 482,500 557,637 608,321 683,431
Seats lost or gained - - - - - 2 0 0 0 0 0
Idaho
Representatives 2 2 2 2 2 2 2 2 2 2 2
Avg. People per representative 161,720 0 220,768 262,437 294,319 333,596 359,961 471,968 505,993 648,637 786,750
Seats lost or gained 1 0 0 0 0 0 0 0 0 0 0
Illinois
Representatives 27 27 27 26 25 24 24 22 20 19 18
Avg. People per representative 208,837 0 282,607 303,740 348,487 420,048 466,013 519,021 573,334 654,686 714,688
Seats lost or gained 2 0 0 -1 -1 -1 0 -2 -2 -1 -1
Indiana
Representatives 13 13 12 11 11 11 11 10 10 9 9
Avg. People per representative 207,760 0 269,873 311,618 357,657 423,863 475,287 549,018 556,423 676,754 722,398
Seats lost or gained 0 0 -1 -1 0 0 0 -1 0 -1 0
Iowa
Representatives 11 11 9 8 8 7 6 6 5 5 4
Avg. People per representative 202,252 0 274,491 317,284 327,634 393,934 474,487 485,565 557,485 586,385 763,447
Seats lost or gained 0 0 -2 -1 0 -1 -1 0 -1 0 -1
Kansas
Representatives 8 8 7 6 6 5 5 5 4 4 4
Avg. People per representative 211,369 0 268,500 300,171 317,550 435,722 453,169 472,642 621,400 673,456 715,953
Seats lost or gained 0 0 -1 -1 0 -1 0 0 -1 0 0
Kentucky
Representatives 11 11 9 9 8 7 7 7 6 6 6
Avg. People per representative 208,173 0 290,508 316,181 368,101 434,022 463,783 523,062 616,495 674,905 725,101
Seats lost or gained 0 0 -2 0 -1 -1 0 0 -1 0 0
Louisiana
Representatives 8 8 8 8 8 8 8 8 7 7 6
Avg. People per representative 207,049 0 262,699 295,485 335,440 407,128 459,001 525,497 605,459 640,039 758,994
Seats lost or gained 1 0 0 0 0 0 0 0 -1 0 -1
Maine
Representatives 4 4 3 3 3 2 2 2 2 2 2
Avg. People per representative 185,593 0 265,806 282,409 304,591 484,633 503,160 562,330 616,612 638,866 666,537
Seats lost or gained 0 0 -1 0 0 -1 0 0 0 0 0
Maryland
Representatives 6 6 6 6 7 8 8 8 8 8 8
Avg. People per representative 215,891 0 271,920 303,541 334,714 387,586 494,212 527,056 599,828 663,486 723,741
Seats lost or gained 0 0 0 0 1 1 0 0 0 0 0
Massachusetts
Representatives 16 16 15 14 14 12 12 11 10 10 9
Avg. People per representative 210,401 0 283,307 308,337 335,037 429,048 477,223 521,549 602,905 635,557 728,849
Seats lost or gained 2 0 -1 -1 0 -2 0 -1 -1 0 -1
Michigan
Representatives 13 13 17 17 18 19 19 18 16 15 14
Avg. People per representative 216,167 0 284,827 309,183 353,987 411,747 470,379 514,352 583,049 663,722 707,973
Seats lost or gained 1 0 4 0 1 1 0 -1 -2 -1 -1
Minnesota
Representatives 10 10 9 9 9 8 8 8 8 8 8
Avg. People per representative 207,438 0 283,509 310,256 331,387 426,733 479,147 509,644 548,379 615,709 664,360
Seats lost or gained 1 0 -1 0 0 -1 0 0 0 0 0
Mississippi
Representatives 8 8 7 7 6 5 5 5 5 4 4
Avg. People per representative 224,639 0 286,879 311,971 363,152 435,628 446,770 504,128 517,289 713,232 744,560
Seats lost or gained 0 0 -1 0 -1 -1 0 0 0 -1 0
Missouri
Representatives 16 16 13 13 11 10 10 9 9 9 8
Avg. People per representative 205,833 0 279,162 291,128 359,514 431,981 471,803 546,383 570,867 622,918 751,435
Seats lost or gained 0 0 -3 0 -2 -1 0 -1 0 0 -1
Montana
Representatives 2 2 2 2 2 2 2 2 1 1 1
Avg. People per representative 183,169 0 262,365 279,728 295,512 337,384 350,787 393,345 803,655 905,316 994,416
Seats lost or gained 1 0 0 0 0 0 0 0 -1 0 0
Nebraska
Representatives 6 6 5 4 4 3 3 3 3 3 3
Avg. People per representative 198,702 0 275,025 328,959 331,378 470,443 498,940 523,335 528,206 571,790 610,608
Seats lost or gained 0 0 -1 -1 0 -1 0 0 0 0 0
Nevada
Representatives 1 1 1 1 1 1 1 2 2 3 4
Avg. People per representative 80,293 0 86,390 110,247 160,083 285,278 492,396 399,592 603,076 667,344 677,358
Seats lost or gained 0 0 0 0 0 0 0 1 0 1 1
New Hampshire
Representatives 2 2 2 2 2 2 2 2 2 2 2
Avg. People per representative 215,286 0 232,646 245,762 266,621 303,461 373,142 460,305 556,958 619,208 660,723
Seats lost or gained 0 0 0 0 0 0 0 0 0 0 0
New Jersey
Representatives 12 12 14 14 14 15 15 14 13 13 12
Avg. People per representative 211,431 0 288,666 297,155 345,381 404,452 480,536 526,011 596,049 648,027 733,958
Seats lost or gained 2 0 2 0 0 1 0 -1 -1 0 -1
New Mexico
Representatives - - 1 2 2 2 2 3 3 3 3
Avg. People per representative - - 395,982 265,909 340,594 475,512 513,332 433,323 507,260 607,940 689,091
Seats lost or gained - - 1 1 0 0 0 1 0 0 0
New York
Representatives 43 43 45 45 43 41 39 34 31 29 27
Avg. People per representative 211,836 0 279,733 299,536 344,888 409,324 470,207 516,391 582,081 655,344 719,298
Seats lost or gained 6 0 2 0 -2 -2 -2 -5 -3 -2 -2
North Carolina
Representatives 10 10 11 12 12 11 11 11 12 13 13
Avg. People per representative 220,629 0 287,934 297,635 338,494 414,196 465,930 534,039 554,803 620,590 735,829
Seats lost or gained 0 0 1 1 0 -1 0 0 1 1 0
North Dakota
Representatives 3 3 2 2 2 2 1 1 1 1 1
Avg. People per representative 191,468 0 336,670 320,968 309,818 316,223 624,181 652,695 641,364 643,756 675,905
Seats lost or gained 1 0 -1 0 0 0 -1 0 0 0 0
Ohio
Representatives 22 22 24 23 23 24 23 21 19 18 16
Avg. People per representative 216,687 0 276,943 300,331 345,506 404,433 466,530 514,163 573,017 631,919 723,031
Seats lost or gained 1 0 2 -1 0 1 -1 -2 -2 -1 -2
Oklahoma
Representatives 8 8 9 8 6 6 6 6 6 5 5
Avg. People per representative 207,144 0 264,691 292,054 372,225 388,047 430,914 504,211 526,267 691,764 752,976
Seats lost or gained 8 0 1 -1 -2 0 0 0 0 -1 0
Oregon
Representatives 3 3 3 4 4 4 4 5 5 5 5
Avg. People per representative 224,255 0 316,793 272,421 380,335 442,172 527,703 526,533 570,747 685,709 769,721
Seats lost or gained 1 0 0 1 0 0 0 1 0 0 0
Pennsylvania
Representatives 36 36 34 33 30 27 25 23 21 19 18
Avg. People per representative 212,920 0 283,274 300,005 349,934 419,236 475,373 515,945 567,843 647,404 707,495
Seats lost or gained 4 0 -2 -1 -3 -3 -2 -2 -2 -2 -1
Rhode Island
Representatives 3 3 2 2 2 2 2 2 2 2 2
Avg. People per representative 180,870 0 343,749 356,673 395,948 429,744 478,899 473,577 502,992 524,831 527,624
Seats lost or gained 1 0 -1 0 0 0 0 0 0 0 0
South Carolina
Representatives 7 7 6 6 6 6 6 6 6 6 7
Avg. People per representative 216,486 0 289,793 316,634 352,838 397,099 436,220 519,868 584,285 670,844 663,711
Seats lost or gained 0 0 -1 0 0 0 0 0 0 0 1
South Dakota
Representatives 3 3 2 2 2 2 2 1 1 1 1
Avg. People per representative 191,892 0 336,503 321,481 326,370 340,257 336,624 690,178 699,999 756,874 819,761
Seats lost or gained 1 0 -1 0 0 0 0 -1 0 0 0
Tennessee
Representatives 10 10 9 10 9 9 8 9 9 9 9
Avg. People per representative 218,479 0 290,722 291,584 365,746 396,343 495,133 510,083 544,071 633,337 708,381
Seats lost or gained 0 0 -1 1 -1 0 -1 1 0 0 0
Texas
Representatives 18 18 21 21 22 23 24 27 30 32 36
Avg. People per representative 216,475 0 277,362 305,468 350,509 416,508 470,783 526,977 568,660 653,250 701,901
Seats lost or gained 2 0 3 0 1 1 1 3 3 2 4
Utah
Representatives 2 2 2 2 2 2 2 3 3 3 4
Avg. People per representative 185,932 0 252,871 275,155 344,431 445,314 533,905 487,012 575,928 745,571 692,691
Seats lost or gained 1 0 0 0 0 0 0 1 0 0 1
Vermont
Representatives 2 2 1 1 1 1 1 1 1 1 1
Avg. People per representative 177,978 0 359,611 359,231 377,747 389,881 448,327 511,456 564,964 609,890 630,337
Seats lost or gained 0 0 -1 0 0 0 0 0 0 0 0
Virginia
Representatives 10 10 9 9 10 10 10 10 11 11 11
Avg. People per representative 206,161 0 269,092 297,530 331,868 396,695 469,074 534,628 565,143 645,518 730,703
Seats lost or gained 0 0 -1 0 1 0 0 0 1 0 0
Washington
Representatives 5 5 6 6 7 7 7 8 9 9 10
Avg. People per representative 228,027 0 258,737 289,365 339,852 407,602 491,927 516,270 543,105 656,520 675,337
Seats lost or gained 2 0 1 0 1 0 0 1 1 0 1
West Virginia
Representatives 6 6 6 6 6 5 4 4 3 3 3
Avg. People per representative 203,520 0 288,200 316,996 334,259 372,084 440,833 487,411 600,542 604,359 619,938
Seats lost or gained 1 0 0 0 0 -1 -1 0 -1 0 0
Wisconsin
Representatives 11 11 10 10 10 10 9 9 9 8 8
Avg. People per representative 212,078 0 293,172 313,759 343,458 395,178 494,113 522,815 545,194 671,401 712,279
Seats lost or gained 0 0 -1 0 0 0 -1 0 0 -1 0
Wyoming
Representatives 1 1 1 1 1 1 1 1 1 1 1
Avg. People per representative 144,658 0 223,630 250,742 290,529 330,066 335,719 470,816 455,975 495,304 568,300
Seats lost or gained 0 0 0 0 0 0 0 0 0 0 0