The states and territories included in the United States Census Bureau's statistics for the United States population, ethnicity, and most other categories include the 50 states and Washington, D.C. Separate statistics are maintained for the five permanently inhabited territories of the United States: Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands. [1]
As of April 1, 2010, the date of the 2010 United States census, the nine most populous U.S. states contain slightly more than half of the total population. The 25 least populous states contain less than one-sixth of the total population. California, the most populous state, contains more people than the 21 least populous states combined, and Wyoming, the least populous state, has a population less than any of the 31 most populous U.S. cities.[ needs update ]
The United States Census counts the persons residing in the United States including citizens, non-citizen permanent residents and non-citizen long-term visitors. [2] Civilian and military federal employees serving abroad and their dependents are counted in their home state. [3]
Every 10 years, the U.S. Census Bureau is charged with making an actual count of all residents by state and territory. The accuracy of this count is then tested after the fact, and sometimes statistically significant undercounts or overcounts occur. For example, for the 2020 decennial census, 14 states had significant miscounts ranging from 1.5% to 6.6%. While these adjustments may be reflected in government programs over the following decade, the 10-year representative apportionments discussed below are not changed to reflect the miscount. [4]
Based on this decennial census, each state is allocated a portion of the 435 fixed seats in the United States House of Representatives (until the early 20th century, the apportionment process generally increased the size of the House based on the results of the census until the size of the House was capped by the Reapportionment Act of 1929), with each state guaranteed at least one Representative. The allocation is based on each state's proportion of the combined population of the fifty states (not including the District of Columbia, Guam, American Samoa, the Northern Mariana Islands, Puerto Rico, or the United States Virgin Islands).
The Electoral College, every four years, elects the President and Vice President of the United States based on the popular vote in each state and the District of Columbia. Each state's number of votes in the Electoral College is equal to its number of members in the Senate plus members in the House of Representatives. [5]
The Twenty-third Amendment to the United States Constitution additionally grants the District of Columbia (D.C.), which is not part of any state, as many Electoral College votes as it would have if it were a state, while having no more votes than the least populous state (currently, Wyoming). Since the U.S. Constitution guarantees every state at least one member of the U.S. House of Representatives and two members of the U.S. Senate, every state has at least three Electoral College votes. Thus, the Electoral College has 538 members (100 senators, plus 435 representatives due to the limit imposed by the Reapportionment Act of 1929, plus 3 members for the District of Columbia). [5] Territories of the United States are not included in the Electoral College: people in those territories cannot vote directly for the President of the United States, [6] although they may participate in the partisan nominating primaries and caucuses. [7]
State or territory | Census population [8] [a] | Change, 2010–2020 [8] [a] | Pop. [a] per seat (2020) | % US (2020) | % EC (2020) | |||||
---|---|---|---|---|---|---|---|---|---|---|
July 1, 2023 (est.) | April 1, 2020 | % | Abs. | Seats | % | |||||
California | 38,965,193 | 39,538,223 | 6.13% | 2,284,267 | 52 | 11.95% | 732,189 | 760,350 | 11.800% | 10.04% |
Texas | 30,503,301 | 29,145,505 | 15.91% | 3,999,944 | 38 | 8.74% | 728,638 | 766,987 | 8.698% | 7.43% |
Florida | 22,610,726 | 21,538,187 | 14.56% | 2,736,877 | 28 | 6.44% | 717,940 | 769,221 | 6.428% | 5.58% |
New York | 19,571,216 | 20,201,249 | 4.25% | 823,147 | 26 | 5.98% | 721,473 | 776,971 | 6.029% | 5.20% |
Pennsylvania | 12,961,683 | 13,002,700 | 2.36% | 300,321 | 17 | 3.91% | 684,353 | 764,865 | 3.881% | 3.53% |
Illinois | 12,549,689 | 12,812,508 | −0.14% | −18,124 | 17 | 3.91% | 674,343 | 753,677 | 3.824% | 3.53% |
Ohio | 11,785,935 | 11,799,448 | 2.28% | 262,944 | 15 | 3.45% | 694,085 | 786,630 | 3.521% | 3.16% |
Georgia | 11,029,227 | 10,711,908 | 10.57% | 1,024,255 | 14 | 3.22% | 669,494 | 765,136 | 3.197% | 2.97% |
North Carolina | 10,835,491 | 10,439,388 | 9.48% | 903,905 | 14 | 3.22% | 652,462 | 745,671 | 3.116% | 2.97% |
Michigan | 10,037,261 | 10,077,331 | 1.96% | 193,691 | 13 | 2.99% | 671,822 | 775,179 | 3.008% | 2.79% |
New Jersey | 9,290,841 | 9,288,994 | 5.65% | 497,100 | 12 | 2.76% | 663,500 | 774,083 | 2.772% | 2.60% |
Virginia | 8,715,698 | 8,631,393 | 7.88% | 630,369 | 11 | 2.53% | 663,953 | 784,672 | 2.576% | 2.42% |
Washington | 7,812,880 | 7,705,281 | 14.58% | 980,741 | 10 | 2.30% | 642,107 | 770,528 | 2.300% | 2.23% |
Arizona | 7,431,344 | 7,151,502 | 11.88% | 759,485 | 9 | 2.07% | 650,137 | 794,611 | 2.134% | 2.04% |
Tennessee | 7,126,489 | 6,910,840 | 8.90% | 564,735 | 9 | 2.07% | 628,258 | 767,871 | 2.062% | 2.04% |
Massachusetts | 7,001,399 | 7,029,917 | 7.37% | 482,288 | 9 | 2.07% | 639,083 | 781,102 | 2.098% | 2.04% |
Indiana | 6,862,199 | 6,785,528 | 4.65% | 301,726 | 9 | 2.07% | 616,866 | 753,948 | 2.025% | 2.04% |
Missouri | 6,196,156 | 6,154,913 | 2.77% | 165,986 | 8 | 1.84% | 615,491 | 769,364 | 1.837% | 1.86% |
Maryland | 6,180,253 | 6,177,224 | 6.99% | 403,672 | 8 | 1.84% | 617,722 | 772,153 | 1.844% | 1.86% |
Wisconsin | 5,910,955 | 5,893,718 | 3.64% | 206,732 | 8 | 1.84% | 589,372 | 736,715 | 1.759% | 1.86% |
Colorado | 5,877,610 | 5,773,714 | 14.80% | 744,518 | 8 | 1.84% | 577,371 | 721,714 | 1.723% | 1.86% |
Minnesota | 5,737,915 | 5,706,494 | 7.59% | 402,569 | 8 | 1.84% | 570,649 | 713,312 | 1.703% | 1.86% |
South Carolina | 5,373,555 | 5,118,425 | 10.66% | 493,061 | 7 | 1.61% | 568,714 | 731,204 | 1.528% | 1.67% |
Alabama | 5,108,468 | 5,024,279 | 5.12% | 244,543 | 7 | 1.61% | 558,253 | 717,754 | 1.499% | 1.67% |
Louisiana | 4,573,749 | 4,657,757 | 2.74% | 124,385 | 6 | 1.38% | 582,220 | 776,293 | 1.390% | 1.49% |
Kentucky | 4,526,154 | 4,505,836 | 3.84% | 166,469 | 6 | 1.38% | 563,230 | 750,973 | 1.345% | 1.49% |
Oregon | 4,233,358 | 4,237,256 | 10.60% | 406,182 | 6 | 1.38% | 529,657 | 706,209 | 1.265% | 1.49% |
Oklahoma | 4,053,824 | 3,959,353 | 5.54% | 208,002 | 5 | 1.15% | 565,622 | 791,871 | 1.182% | 1.30% |
Connecticut | 3,617,176 | 3,605,944 | 0.89% | 31,847 | 5 | 1.15% | 515,135 | 721,189 | 1.076% | 1.30% |
Utah | 3,417,734 | 3,271,616 | 18.37% | 507,731 | 4 | 0.92% | 545,269 | 817,904 | 0.976% | 1.12% |
Iowa | 3,207,004 | 3,190,369 | 4.73% | 144,014 | 4 | 0.92% | 531,728 | 797,592 | 0.952% | 1.12% |
Puerto Rico | 3,205,691 | 3,285,874 | −11.81% | −439,915 | 1* | — | — | — | 0.981% | — |
Nevada | 3,194,176 | 3,104,614 | 14.96% | 404,063 | 4 | 0.92% | 517,436 | 776,154 | 0.927% | 1.12% |
Arkansas | 3,067,732 | 3,011,524 | 3.28% | 95,606 | 4 | 0.92% | 501,921 | 752,881 | 0.899% | 1.12% |
Kansas | 2,940,546 | 2,937,880 | 2.97% | 84,762 | 4 | 0.92% | 489,647 | 734,470 | 0.877% | 1.12% |
Mississippi | 2,939,690 | 2,961,279 | −0.20% | −6,018 | 4 | 0.92% | 493,547 | 740,320 | 0.884% | 1.12% |
New Mexico | 2,114,371 | 2,117,522 | 2.83% | 58,343 | 3 | 0.69% | 423,504 | 705,841 | 0.632% | 0.93% |
Nebraska | 1,978,379 | 1,961,504 | 7.40% | 135,163 | 3 | 0.69% | 392,301 | 653,835 | 0.585% | 0.93% |
Idaho | 1,964,726 | 1,839,106 | 17.32% | 271,524 | 2 | 0.46% | 459,777 | 919,553 | 0.549% | 0.74% |
West Virginia | 1,770,071 | 1,793,716 | −3.20% | −59,278 | 2 | 0.46% | 448,429 | 896,858 | 0.535% | 0.74% |
Hawaii | 1,435,138 | 1,455,271 | 6.98% | 94,970 | 2 | 0.46% | 363,818 | 727,636 | 0.434% | 0.74% |
New Hampshire | 1,402,054 | 1,377,529 | 4.66% | 61,059 | 2 | 0.46% | 344,382 | 688,765 | 0.411% | 0.74% |
Maine | 1,395,722 | 1,362,359 | 2.56% | 33,998 | 2 | 0.46% | 340,590 | 681,180 | 0.407% | 0.74% |
Montana | 1,132,812 | 1,084,225 | 9.58% | 94,810 | 2 | 0.46% | 271,056 | 542,113 | 0.324% | 0.74% |
Rhode Island | 1,095,962 | 1,097,379 | 4.26% | 44,812 | 2 | 0.46% | 274,345 | 548,690 | 0.328% | 0.74% |
Delaware | 1,031,890 | 989,948 | 10.25% | 92,014 | 1 | 0.23% | 329,983 | 989,948 | 0.295% | 0.56% |
South Dakota | 919,318 | 886,667 | 8.90% | 72,487 | 1 | 0.23% | 295,556 | 886,667 | 0.265% | 0.56% |
North Dakota | 783,926 | 779,094 | 15.83% | 106,503 | 1 | 0.23% | 259,698 | 779,094 | 0.233% | 0.56% |
Alaska | 733,406 | 733,391 | 3.26% | 23,160 | 1 | 0.23% | 244,464 | 733,391 | 0.219% | 0.56% |
District of Columbia | 678,972 | 689,545 | 14.60% | 87,822 | 1* | — | 229,848 | — | 0.206% | 0.56% |
Vermont | 647,464 | 643,077 | 2.77% | 17,336 | 1 | 0.23% | 214,359 | 643,077 | 0.192% | 0.56% |
Wyoming | 584,057 | 576,851 | 2.35% | 13,225 | 1 | 0.23% | 192,284 | 576,851 | 0.172% | 0.56% |
Guam [10] | N/A | 153,836 | −3.47% | −5,522 | 1* | — | — | — | 0.046% | — |
U.S. Virgin Islands [11] | N/A | 87,146 | −18.10% | −19,259 | 1* | — | — | — | 0.026% | — |
American Samoa [12] | N/A | 49,710 | −10.46% | −5,809 | 1* | — | — | — | 0.015% | — |
Northern Mariana Islands [13] | N/A | 47,329 | −12.16% | −6,554 | 1* | — | — | — | 0.014% | — |
Contiguous United States | 332,746,351 | 329,260,619 | 7.36% | 22,585,613 | 432 (+1*) | 99.31% | 623,600 | 756,921 | 98.265% | 98.70% |
The 50 states | 334,235,923 | 330,759,736 | 7.34% | 22,615,921 | 435 | 100% | 618,242 | 760,367 | 98.713% | 99.44% |
The 50 states and D.C. | 334,914,895 | 331,449,281 | 7.35% | 22,703,743 | 435 (+1*) | 100% | 616,077 | — | 98.918% | 100% |
Total US and territories | N/A | 335,073,176 | 7.10% | 22,226,684 | 435 (+6*) | 100% | — | — | 100% | — |
* — non-voting member of the House of Representatives.
Legend |
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Division totals – 9 divisions for 50 states and District of Columbia |
Region totals – 4 regions (2 or 3 divisions each) |
Individual territories |
Total U.S. territories |
50 states + District of Columbia |
Divisions & regions as defined by U.S. Census Bureau |
Last col. shows larger region which contains entity in col. 1 |
Column header abbreviations: # = Rank, Geo. = Geographic
State/federal district/territory/ division/region | # | 2020 pop. | # | 2010 pop. | # | 2000 pop. | # | 2010– 2020 change | Geo. sort |
---|---|---|---|---|---|---|---|---|---|
Massachusetts | 15 | 7,029,917 | 14 | 6,547,629 | 13 | 6,349,097 | 21 | 7.4% | NEng |
Connecticut | 29 | 3,605,944 | 29 | 3,574,097 | 29 | 3,405,565 | 47 | 0.9% | NEng |
New Hampshire | 41 | 1,377,529 | 42 | 1,316,470 | 41 | 1,235,786 | 30 | 4.6% | NEng |
Maine | 42 | 1,362,359 | 41 | 1,328,361 | 40 | 1,274,923 | 42 | 2.6% | NEng |
Rhode Island | 43 | 1,097,379 | 43 | 1,052,567 | 43 | 1,048,319 | 31 | 4.3% | NEng |
Vermont | 49 | 643,077 | 49 | 625,741 | 49 | 608,827 | 40 | 2.8% | NEng |
New England | 9 | 15,116,205 | 9 | 14,444,865 | 9 | 13,922,517 | 7 | 4.6% | NEast |
New York | 4 | 20,201,249 | 3 | 19,378,102 | 3 | 18,976,457 | 32 | 4.2% | MAtl |
Pennsylvania | 5 | 13,002,700 | 6 | 12,702,379 | 6 | 12,281,054 | 43 | 2.4% | MAtl |
New Jersey | 11 | 9,288,994 | 11 | 8,791,894 | 9 | 8,414,350 | 25 | 5.7% | MAtl |
Mid-Atlantic | 4 | 42,492,943 | 4 | 40,872,375 | 4 | 39,671,861 | 8 | 4.0% | NEast |
Northeast | 4 | 57,609,148 | 4 | 55,317,240 | 4 | 53,594,378 | 3 | 4.1% | USA |
Florida | 3 | 21,538,187 | 4 | 18,801,310 | 4 | 15,982,378 | 8 | 14.6% | SAtl |
Georgia | 8 | 10,711,908 | 9 | 9,687,653 | 10 | 8,186,453 | 12 | 10.6% | SAtl |
North Carolina | 9 | 10,439,388 | 10 | 9,535,483 | 11 | 8,049,313 | 15 | 9.5% | SAtl |
Virginia | 12 | 8,631,393 | 12 | 8,001,024 | 12 | 7,078,515 | 18 | 7.9% | SAtl |
Maryland | 18 | 6,177,224 | 19 | 5,773,552 | 19 | 5,296,486 | 22 | 7.0% | SAtl |
South Carolina | 23 | 5,118,425 | 24 | 4,625,364 | 26 | 4,012,012 | 10 | 10.7% | SAtl |
West Virginia | 39 | 1,793,716 | 37 | 1,852,994 | 37 | 1,808,344 | 50 | −3.2% | SAtl |
Delaware | 45 | 989,948 | 45 | 897,934 | 45 | 783,600 | 13 | 10.2% | SAtl |
District of Columbia | – | 689,545 | – | 601,723 | – | 572,059 | – | 14.6% | SAtl |
South Atlantic | 1 | 66,089,734 | 1 | 59,777,037 | 1 | 51,769,160 | 3 | 10.6% | South |
Tennessee | 16 | 6,910,840 | 17 | 6,346,105 | 16 | 5,689,283 | 17 | 8.9% | ESC |
Alabama | 24 | 5,024,279 | 23 | 4,779,736 | 23 | 4,447,100 | 27 | 5.1% | ESC |
Kentucky | 26 | 4,505,836 | 26 | 4,339,367 | 25 | 4,041,769 | 33 | 3.8% | ESC |
Mississippi | 34 | 2,961,279 | 31 | 2,967,297 | 31 | 2,844,658 | 49 | −0.2% | ESC |
East South Central | 8 | 19,402,234 | 8 | 18,432,505 | 8 | 17,022,810 | 6 | 5.3% | South |
Texas | 2 | 29,145,505 | 2 | 25,145,561 | 2 | 20,851,820 | 3 | 15.9% | WSC |
Louisiana | 25 | 4,657,757 | 25 | 4,533,372 | 22 | 4,468,976 | 41 | 2.7% | WSC |
Oklahoma | 28 | 3,959,353 | 28 | 3,751,351 | 27 | 3,450,654 | 26 | 5.5% | WSC |
Arkansas | 33 | 3,011,524 | 32 | 2,915,918 | 33 | 2,673,400 | 35 | 3.3% | WSC |
West South Central | 5 | 40,774,139 | 5 | 36,346,202 | 5 | 31,444,850 | 2 | 12.2% | South |
South | 1 | 126,266,107 | 1 | 114,555,744 | 1 | 100,236,820 | 1 | 10.2% | USA |
Illinois | 6 | 12,812,508 | 5 | 12,830,632 | 5 | 12,419,293 | 48 | −0.1% | ENC |
Ohio | 7 | 11,799,448 | 7 | 11,536,504 | 7 | 11,353,140 | 45 | 2.3% | ENC |
Michigan | 10 | 10,077,331 | 8 | 9,883,640 | 8 | 9,938,444 | 46 | 2.0% | ENC |
Indiana | 17 | 6,785,528 | 15 | 6,483,802 | 14 | 6,080,485 | 29 | 4.7% | ENC |
Wisconsin | 20 | 5,893,718 | 20 | 5,686,986 | 18 | 5,363,675 | 34 | 3.6% | ENC |
East North Central | 3 | 47,368,533 | 3 | 46,421,564 | 2 | 45,155,037 | 9 | 2.0% | MWest |
Missouri | 19 | 6,154,913 | 18 | 5,988,927 | 17 | 5,595,211 | 39 | 2.8% | WNC |
Minnesota | 22 | 5,706,494 | 21 | 5,303,925 | 21 | 4,919,479 | 19 | 7.6% | WNC |
Iowa | 31 | 3,190,369 | 30 | 3,046,355 | 30 | 2,926,324 | 28 | 4.7% | WNC |
Kansas | 35 | 2,937,880 | 33 | 2,853,118 | 32 | 2,688,418 | 37 | 3.0% | WNC |
Nebraska | 37 | 1,961,504 | 38 | 1,826,341 | 38 | 1,711,263 | 20 | 7.4% | WNC |
South Dakota | 46 | 886,667 | 46 | 814,180 | 46 | 754,844 | 16 | 8.9% | WNC |
North Dakota | 47 | 779,094 | 48 | 672,591 | 47 | 642,200 | 4 | 15.8% | WNC |
West North Central | 7 | 21,616,921 | 7 | 20,505,437 | 6 | 19,237,739 | 5 | 5.4% | MWest |
Midwest | 3 | 68,985,454 | 3 | 66,927,001 | 2 | 64,392,776 | 4 | 3.1% | USA |
Arizona | 14 | 7,151,502 | 16 | 6,392,017 | 20 | 5,130,632 | 9 | 11.9% | Mtn |
Colorado | 21 | 5,773,714 | 22 | 5,029,196 | 24 | 4,301,261 | 6 | 14.8% | Mtn |
Utah | 30 | 3,271,616 | 34 | 2,763,885 | 34 | 2,233,169 | 1 | 18.4% | Mtn |
Nevada | 32 | 3,104,614 | 35 | 2,700,551 | 35 | 1,998,257 | 5 | 15.0% | Mtn |
New Mexico | 36 | 2,117,522 | 36 | 2,059,179 | 36 | 1,819,046 | 38 | 2.8% | Mtn |
Idaho | 38 | 1,839,106 | 39 | 1,567,582 | 39 | 1,293,953 | 2 | 17.3% | Mtn |
Montana | 44 | 1,084,225 | 44 | 989,415 | 44 | 902,195 | 14 | 9.6% | Mtn |
Wyoming | 50 | 576,851 | 50 | 563,626 | 50 | 493,782 | 44 | 2.3% | Mtn |
Mountain | 6 | 24,919,150 | 6 | 22,065,451 | 7 | 18,172,295 | 1 | 12.9% | West |
California | 1 | 39,538,223 | 1 | 37,253,956 | 1 | 33,871,648 | 24 | 6.1% | Pac |
Washington | 13 | 7,705,281 | 13 | 6,724,540 | 15 | 5,894,121 | 7 | 14.6% | Pac |
Oregon | 27 | 4,237,256 | 27 | 3,831,074 | 28 | 3,421,399 | 11 | 10.6% | Pac |
Hawaii | 40 | 1,455,271 | 40 | 1,360,301 | 42 | 1,211,537 | 23 | 7.0% | Pac |
Alaska | 48 | 733,391 | 47 | 710,231 | 48 | 626,932 | 36 | 3.3% | Pac |
Pacific | 2 | 53,669,422 | 2 | 49,880,102 | 3 | 45,025,637 | 4 | 7.6% | West |
West | 2 | 78,588,572 | 2 | 71,945,553 | 3 | 63,197,932 | 2 | 9.2% | USA |
50 states and District of Columbia | – | 331,449,281 | – | 308,745,538 | – | 281,421,906 | – | 7.4% | NAmer |
Puerto Rico | 1 | 3,285,874 | 1 | 3,725,789 | 1 | 3,808,610 | 3 | −11.8% | I.A. |
Guam | 2 | 153,836 | 2 | 159,358 | 2 | 154,805 | 1 | −3.5% | I.A. |
U.S. Virgin Islands | 3 | 87,146 | 3 | 106,405 | 3 | 108,612 | 2 | −18.1% | I.A. |
American Samoa | 4 | 49,710 | 4 | 55,519 | 5 | 57,291 | 4 | −7.7% | I.A. |
Northern Mariana Islands | 5 | 47,329 | 5 | 53,883 | 4 | 69,221 | 5 | −14.8% | I.A. |
U.S. Minor Outlying Islands | 6 | [note 1] | 6 | [note 2] | 6 | 316 | 6 | — | I.A. |
Island Areas (Territories) | – | 3,623,895 | – | 4,100,954 | – | 4,198,855 | – | −11.6% | USA |
State/federal district/territory/ division/region | # | 2020 pop. | # | 2010 pop. | # | 2000 pop. | # | 2010– 2020 change | Geo. sort |
Guam is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. Guam's capital is Hagåtña, and the most populous village is Dededo. It is the westernmost point and territory of the United States, reckoned from the geographic center of the U.S. In Oceania, Guam is the largest and southernmost of the Mariana Islands and the largest island in Micronesia. As of 2022, its population was 168,801. Chamorros are its largest ethnic group, but a minority on the multiethnic island. The territory spans 210 square miles and has a population density of 775 per square mile (299/km2).
The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI), is an unincorporated territory and commonwealth of the United States consisting of 14 islands in the northwestern Pacific Ocean. The CNMI includes the 14 northernmost islands in the Mariana Archipelago; the southernmost island, Guam is a U.S. territory. The Northern Mariana Islands were listed by the United Nations as a non-self-governing territory until 1990.
In the United States, a county or county equivalent is an administrative or political subdivision of a U.S. state or other territories of the United States which consists of a geographic area with specific boundaries and usually some level of governmental authority. The term "county" is used in 48 states, while Louisiana and Alaska have functionally equivalent subdivisions called parishes and boroughs, respectively. Counties and other local governments exist as a matter of U.S. state law, so the specific governmental powers of counties may vary widely between the states, with many providing some level of services to civil townships, municipalities, and unincorporated areas. Certain municipalities are in multiple counties; New York City is uniquely partitioned into five counties, referred to at the city government level as boroughs. Some municipalities have been consolidated with their county government to form consolidated city-counties, or have been legally separated from counties altogether to form independent cities. Conversely, counties in Connecticut and Rhode Island, eight of Massachusetts's 14 counties, and Alaska's Unorganized Borough have no government power, existing only as geographic distinctions.
In 45 of the 50 states of the United States, the county is used for the level of local government immediately below the state itself. Louisiana uses parishes, and Alaska uses boroughs. In Connecticut, Massachusetts, and Rhode Island, some or all counties within states have no governments of their own; the counties continue to exist as legal entities, however, and are used by states for some administrative functions and by the United States Census bureau for statistical analysis. There are 3,242 counties and county equivalent administrative units in total, including the District of Columbia and 100 county-equivalents in the U.S. territories.
United States congressional apportionment is the process by which seats in the United States House of Representatives are distributed among the 50 states according to the most recent decennial census mandated by the United States Constitution. After each state is assigned one seat in the House, most states are then apportioned a number of additional seats which roughly corresponds to its share of the aggregate population of the 50 states. Every state is constitutionally guaranteed two seats in the Senate and at least one seat in the House, regardless of population.
Territories of the United States are sub-national administrative divisions and dependent territories overseen by the federal government of the United States. The American territories differ from the U.S. states and Indian reservations as they are not sovereign entities. In contrast, each state has a sovereignty separate from that of the federal government and each federally recognized Native American tribe possesses limited tribal sovereignty as a "dependent sovereign nation". Territories are classified by incorporation and whether they have an "organized" government through an organic act passed by the Congress. American territories are under American sovereignty and may be treated as part of the U.S. proper in some ways and not others. Unincorporated territories in particular are not considered to be integral parts of the U.S., and the U.S. Constitution applies only partially in those territories.
The United States territory of Guam is divided into nineteen municipalities, called villages. Each village is governed by an elected mayor. Village populations range in size from under 1,000 to over 40,000. In the 2020 census, the total population of Guam was 153,836. Each municipality, known as an "election district" by the United States Census Bureau, is counted as a county equivalent by the Census Bureau for statistical purposes.
Pacific Islander Americans are Americans who are of Pacific Islander ancestry. For its purposes, the United States census also counts Aboriginal Australians as part of this group.
The District of Columbia and United States Territories quarters were a series of six quarters minted by the United States Mint in 2009 to honor the District of Columbia and the unincorporated United States insular areas of Puerto Rico, Guam, the United States Virgin Islands, American Samoa, and the Northern Mariana Islands. The islands commonly grouped together as the United States Minor Outlying Islands were not featured, as the law defined the word "territory" as being limited to the areas mentioned above. They followed the completion of the 50 State Quarters Program. The coins used the same George Washington obverse as with the quarters of the previous 10 years. The reverse of the quarters featured a design selected by the Mint depicting the federal district and each territory. Unlike on the 50 State quarters, the motto "E Pluribus Unum" preceded and was the same size as the mint date on the reverse.