American Indian and Alaska Native population by state
Alaska has the highest share of American Indian and Alaska Native residents: 22.2% (±0.5 percentage points) reported that race, alone or with another, in 2025. Oklahoma (17.0%) and New Mexico (12.8%) follow; Pennsylvania and Massachusetts are lowest (1.6%1 each). By number, California2 has the most people who are American Indian or Alaska Native alone, ahead of Arizona and Oklahoma.
Data as of October 29, 2026 (newest release used on this page).
Source: Census Bureau, American Community Survey 1-year estimates, 2025, table B02010; Census Bureau, 2024 Cartographic Boundary Files. Darker states are higher; DC is the dot. Period: 2025.
| 1 | Alaska | 22.2% | ±0.5 | 1st | Higher | 15.6% | 14.1% |
|---|---|---|---|---|---|---|---|
| 2 | Oklahoma | 17.0% | ±0.2 | 2nd | Higher | 9.4% | 7.4% |
| 3 | New Mexico | 12.8% | ±0.4 | 3rd | Higher | 11.6% | 8.8% |
| 4 | South Dakota | 11.4% | ±0.4 | 4th | Higher | 9.0% | 7.9% |
| 5 | Montana | 9.2% | ±0.2 | 5th | Higher | 6.4% | 5.3% |
| 6 | North Dakota | 7.4% | ±0.5 | 6th | Higher | 5.4% | 4.4% |
| 7 | Arizona | 6.5% | ±0.2 | 7th–8th | Higher | 5.6% | 3.4% |
| 8 | Wyoming | 5.9% | ±0.6 | 7th–8th | Higher | 2.9% | 1.6% |
| 9 | Oregon | 5.1% | ±0.2 | 9th | Higher | 2.6% | 0.8% |
| 10 | Washington | 4.5% | ±0.2 | 10th–11th | Higher | 2.4% | 1.0% |
| 11 | Arkansas | 4.4% | ±0.2 | 10th–11th | Higher | 1.5% | 0.7% |
| 12 | Kansas | 4.0% | ±0.2 | 12th–15th | Higher | 1.5% | 0.7% |
| 13 | Colorado | 4.0% | ±0.2 | 12th–15th | Higher | 2.3% | 0.5% |
| 14 | Idaho | 3.9% | ±0.3 | 12th–15th | Higher | 2.0% | 0.9% |
| 15 | Nevada | 3.8% | ±0.3 | 12th–16th | Higher | 2.7% | 0.8% |
| 16 | California | 3.6% | ±0.1 | 15th–16th | Higher | 4.3% | 0.4% |
| 17 | North Carolina | 3.5% | ±0.1 | 17th | Higher | 2.0% | 1.0% |
| 18 | Missouri | 3.3% | ±0.1 | 18th–21st | Higher | 0.7% | 0.4% |
| 19 | Nebraska | 3.2% | ±0.2 | 18th–25th | Not significant | 2.1% | 0.7% |
| 20 | Minnesota | 3.1% | ±0.1 | 19th–25th | Not significant | 1.7% | 0.9% |
| 21 | Utah | 3.0% | ±0.2 | 19th–28th | Not significant | 2.1% | 0.8% |
| 22 | Texas | 2.9% | ±0.1 | 19th–25th | Lower | 1.9% | 0.3% |
| 23 | Hawaii | 2.9% | ±0.4 | 18th–31st | Not significant | 0.5% | 0.2% |
| 24 | Louisiana | 2.9% | ±0.3 | 19th–29th | Not significant | 1.2% | 0.5% |
| 25 | Rhode Island | 2.8% | ±0.6 | 18th–45th | Not significant | 2.1% | 0.3% |
| 26 | Alabama | 2.7% | ±0.1 | 22nd–33rd | Lower | 1.1% | 0.3% |
| 27 | Maine | 2.7% | ±0.2 | 22nd–33rd | Lower | 0.7% | 0.4% |
| 28 | Wisconsin | 2.7% | ±0.1 | 22nd–33rd | Lower | 1.4% | 0.8% |
| 29 | Michigan | 2.6% | ±0.1 | 24th–33rd | Lower | 0.8% | 0.5% |
| 30 | Illinois | 2.5% | ±0.2 | 24th–35th | Lower | 2.0% | 0.2% |
| 31 | Vermont | 2.5% | ±0.3 | 23rd–38th | Lower | 0.4% | 0.3% |
| 32 | Tennessee | 2.5% | ±0.1 | 25th–35th | Lower | 0.9% | 0.2% |
| 33 | South Carolina | 2.4% | ±0.1 | 29th–40th | Lower | 0.9% | 0.2% |
| 34 | Kentucky | 2.4% | ±0.1 | 29th–42nd | Lower | 0.5% | 0.2% |
| 35 | Delaware | 2.4% | ±0.4 | 25th–48th | Lower | 1.1% | 0.1% |
| 36 | Indiana | 2.3% | ±0.1 | 31st–45th | Lower | 0.8% | 0.2% |
| 37 | Connecticut | 2.2% | ±0.2 | 31st–46th | Lower | 1.3% | 0.2% |
| 38 | Maryland | 2.2% | ±0.2 | 31st–46th | Lower | 1.6% | 0.2% |
| 39 | Iowa | 2.2% | ±0.2 | 32nd–46th | Lower | 0.8% | 0.2% |
| 40 | West Virginia | 2.2% | ±0.2 | 33rd–46th | Lower | 0.3% | 0.1% |
| 41 | Georgia | 2.2% | ±0.2 | 34th–46th | Lower | 1.1% | 0.1% |
| 42 | Mississippi | 2.2% | ±0.2 | 33rd–47th | Lower | 0.8% | 0.4% |
| 43 | Virginia | 2.1% | ±0.1 | 34th–46th | Lower | 1.1% | 0.2% |
| 44 | Ohio | 2.1% | ±0.1 | 35th–46th | Lower | 0.4% | 0.1% |
| 45 | New Jersey | 2.1% | ±0.2 | 35th–48th | Lower | 1.8% | 0.1% |
| 46 | District of Columbia | 2.0% | ±0.4 | 32nd–51st | Lower | 1.2% | 0.1% |
| 47 | New York | 2.0% | ±0.1 | 44th–49th | Lower | 2.0% | 0.3% |
| 48 | Florida | 1.9% | ±0.1 | 46th–49th | Lower | 0.9% | 0.2% |
| 49 | New Hampshire | 1.9% | ±0.2 | 43rd–49th | Lower | 0.4% | 0.3% |
| 50 | Pennsylvania | 1.6% | ±0.1 | 49th–51st | Lower | 0.7% | 0.1% |
| 51 | Massachusetts | 1.6% | ±0.1 | 49th–51st | Lower | 0.9% | 0.1% |
| United States | 3.2% | ±0.0 | 2.1% | 0.6% |
Source: Census Bureau, American Community Survey 1-year estimates, 2025, table B02010; Census Bureau, Population Estimates Program, Vintage 2025; Census Bureau, American Community Survey 1-year estimates, 2025, table B03002. Period: 2025. "=" marks a tie at the displayed precision. Rank range: the ranks consistent with the 90% margins of error (Census Bureau method). "Compared with US" and changes use the Census Bureau significance test at 90% confidence; "Not significant" means the difference is within the margins of error.
The main column counts everyone who reported American Indian or Alaska Native in the 2025 American Community Survey, either as their only race or together with another race. It is the broadest federal measure and the one that matches how most people ask the question. The second column is the Census Bureau's population estimate for July 1, 2025 of people who are American Indian or Alaska Native alone, of any Hispanic origin. The third is the survey share of residents who reported that race alone and are not Hispanic, the narrowest measure.
The highest shares: Alaska, Oklahoma, New Mexico
After Alaska (22.2%), Oklahoma (17.0%) and New Mexico (12.8%) come South Dakota (11.4%), Montana (9.2%), North Dakota (7.4%) and Arizona (6.5%). Arizona and Wyoming (5.9%) rank between 7th and 8th once the margins of error are taken into account. Oregon (5.1%) and Washington (4.5%1) complete the top ten.
Each region has its own leader. Oklahoma is highest in the South and higher than every bordering state (Arkansas, Colorado, Kansas, Missouri, New Mexico and Texas). South Dakota is highest in the Midwest, with North Dakota next. New Mexico is higher than Arizona, Colorado and Texas; lower than Oklahoma. In the Northeast the highest share is Rhode Island's 2.8%, which is not statistically different from the US figure (3.2%)1.
Most states are close to one another. The median of the 51 values is 2.7%. 18 states are significantly above the national figure of 3.2% and 27, counting DC, are significantly below it; for the rest, including Nebraska (3.2%) and Minnesota (3.1%), the difference from the US is not statistically significant. Below the top ten, many ranks overlap: Hawaii's 2.9% is consistent with any rank between 19th and 31st1.
Where the most American Indian and Alaska Native people live
A high share and a large number are different things. California, with 39.4 million6 residents on July 1, 2025, has the largest number of people who reported American Indian or Alaska Native as their only race, although they are a small share of the state. Alaska has the highest share but ranks 8th largest2 by number.
| State | American Indian or Alaska Native alone, 2025 | Margin of error | Share of residents | Rank by number, 2020–2024 |
|---|---|---|---|---|
| California | 584,305 | ±28,158 | 1.5% | largest |
| Oklahoma | 333,862 | ±8,399 | 8.1% | 3rd largest |
| Arizona | 320,497 | ±14,078 | 4.2% | 2nd largest |
| Texas | 306,491 | ±21,373 | 0.97% | 4th largest |
| New Mexico | 218,502 | ±7,707 | 10.3% | 5th largest |
| North Carolina | 172,139 | ±10,809 | 1.5% | 7th largest |
| New York | 132,349 | ±16,639 | 0.66% | 6th largest |
| Illinois | 119,159 | ±14,873 | 0.94% | 10th largest |
| Washington | 118,048 | ±9,205 | 1.5% | 9th largest |
| Alaska | 107,163 | ±4,658 | 14.5%7 | 8th largest2 |
The 2025 counts come from the one-year survey; the rank column uses the 2020–2024 five-year survey, the only period that ranks every state on the same basis. On that basis Oklahoma and Arizona rank between 2nd and 3rd2: their counts are too close to separate. Nationally, 3,852,092 (±57,3097) people reported American Indian or Alaska Native alone in 2025.
Multiracial residents double Oklahoma's figure
The gap between "alone" and "alone or in combination" is people who reported more than one race, and its size varies widely between states. In Oklahoma, 8.1%7 of residents reported American Indian or Alaska Native alone in 2025, while 17.0%1 reported it alone or with another race. In New Mexico and Arizona the two figures are much closer.
| Alaska | 22.2% ±0.5 | 15.6% | 14.1% ±0.6 |
|---|---|---|---|
| Oklahoma | 17.0% ±0.2 | 9.4% | 7.4% ±0.2 |
| New Mexico | 12.8% ±0.4 | 11.6% | 8.8% ±0.2 |
| South Dakota | 11.4% ±0.4 | 9.0% | 7.9% ±0.5 |
| Montana | 9.2% ±0.2 | 6.4% | 5.3% ±0.2 |
| North Dakota | 7.4% ±0.5 | 5.4% | 4.4% ±0.4 |
| Arizona | 6.5% ±0.2 | 5.6% | 3.4% ±0.1 |
| Wyoming | 5.9% ±0.6 | 2.9% | 1.6% ±0.2 |
| California | 3.6% ±0.1 | 4.3% | 0.4% |
| Texas | 2.9% ±0.1 | 1.9% | 0.3% |
| United States | 3.2% ±0.0 | 2.1% | 0.6% |
Source: Census Bureau, American Community Survey 1-year estimates, 2025, table B02010; Census Bureau, Population Estimates Program, Vintage 2025; Census Bureau, American Community Survey 1-year estimates, 2025, table B03002. ± is the 90% margin of error.
The largest combination is white and American Indian or Alaska Native. Nationally, 4.3 million people reported those two races in 2025, more than the 3.9 million who reported American Indian or Alaska Native alone. In Oklahoma they were 6.9% (±0.21 percentage points7) of residents. On the 2020–2024 survey, which ranks every state, the share is highest in Oklahoma (5.3%), Alaska (5.2%) and Montana (2.2%). Oklahoma also has the highest share of people who reported Black and American Indian or Alaska Native (0.51%2 in 2020–2024).
Hispanic American Indians: California and Texas
The federal definition of American Indian or Alaska Native covers people with origins in any of the original peoples of North and South America, including Central America, according to the Census Bureau. The 2020 Census write-ins reflect this: two of the three largest groups in California are Latin American Indian groups (see the tribes section below).
In California, 3.6% (±0.1 percentage points) of residents reported American Indian or Alaska Native alone or in combination in 2025, but only 0.4% reported it alone and were not Hispanic. In Texas the figures were 2.9%1 and 0.3%. In Oklahoma, Alaska and South Dakota the two narrower measures are close, so most people who reported the race alone are not Hispanic: 8.1% against 7.4% in Oklahoma, 14.5% against 14.1% in Alaska and 8.3%7 against 7.9%4 in South Dakota.
The population estimates add a further difference. They have six race groups and no "Some other race" category: the Census Bureau reconciles census race answers with the categories used in administrative records. The result is a different order. California's estimate is 4.3%, the 8th highest share, while its survey share (alone or in combination) is 16th highest1. Nationally the estimate is 2.1%3, against 1.1%7 in the survey for people who reported the race alone.
The largest tribes and groups, 2020 Census
The 2020 Census asked American Indian and Alaska Native respondents to write in their tribe or group. Nationally, the largest group alone or in any combination was Cherokee (1,513,326 people), followed by Aztec, a Latin American Indian group (583,981), and the Navajo Nation (423,412). Counting only people who reported one group and no other race, the order changes: Aztec (387,122), the Navajo Nation (315,086) and Cherokee (214,9408).
| Group or tribe | Category | Alone or in any combination | Alone |
|---|---|---|---|
| Cherokee | American Indian | 1,513,326 | – |
| Aztec | Latin American Indian | 583,981 | – |
| Navajo Nation | American Indian | 423,412 | – |
| Maya | Latin American Indian | 300,519 | – |
| Blackfeet Tribe of the Blackfeet Indian Reservation of Montana | American Indian | 297,899 | – |
| Choctaw | American Indian | 255,557 | – |
| Chippewa | American Indian | 130,048 | – |
| Apache | American Indian | 129,589 | – |
| Sioux | American Indian | 126,571 | – |
| The Muscogee (Creek) Nation | American Indian | 121,581 | – |
| Taino | Latin American Indian | 112,682 | – |
| The Chickasaw Nation | American Indian | 85,511 | – |
| Lumbee Tribe of North Carolina | American Indian | 79,424 | – |
| Cherokee Nation | American Indian | 77,232 | – |
| Canadian Indian and French American Indian | American Indian | 72,701 | – |
Source: Census Bureau, 2020 Census Detailed Demographic and Housing Characteristics File A, table T01001. April 1, 2020. Census write-in categories with differential privacy; groups below the publication threshold are not shown. A person can report several groups, so the counts overlap and do not add up.
The largest group differs from state to state:
- Oklahoma: Cherokee (203,803), then Choctaw (76,070) and The Muscogee (Creek) Nation (53,220). Oklahoma had the most people who reported American Indian alone in the 2020 Census, 306,874, or 14.2% of the national total.
- Arizona and New Mexico: the Navajo Nation, with 145,334 people in Arizona and 126,720 in New Mexico. Next come Cherokee (23,806) and the Tohono O'odham Nation of Arizona (19,407) in Arizona, and the Zuni Tribe of the Zuni Reservation (9,702) in New Mexico.
- South Dakota: the Oglala Sioux Tribe (21,398) and the Rosebud Sioux Tribe of the Rosebud Indian Reservation, South Dakota (13,329).
- Montana and North Dakota: the Blackfeet Tribe of the Blackfeet Indian Reservation of Montana (15,237) in Montana; the Turtle Mountain Band of Chippewa Indians of North Dakota (11,504) in North Dakota.
- North Carolina: Cherokee (69,776) and the Lumbee Tribe of North Carolina (56,793).
- Alaska: Yup'ik (Yup'ik Eskimo) (11,124), Tlingit (8,904) and Inupiat (Inupiaq) (7,538).
- California: Aztec (216,155) and Maya (92,326), both Latin American Indian groups, with Cherokee (126,2028) between them.
Census categories keep general answers apart from specific tribes: "Cherokee" and "Cherokee Nation" are separate rows, as are "Choctaw" and "The Choctaw Nation of Oklahoma". A person can report several groups, so the counts overlap and must not be added together.
Change since 2020
In the population estimates, the national share went up from 1.9% in 2020. Most states moved by a few tenths of a point. The share was unchanged in several of the leading states, among them Alaska (15.6%), South Dakota (9.0%), Montana (6.4%) and Arizona (5.6%). The largest rise was in Rhode Island, up from 1.4% in 2020. New Mexico went up from 11.2% in 2020 and Oklahoma up from 9.0% in 20203.
Source: Census Bureau, American Community Survey 1-year estimates, 2005-2019 and 2021-2025. ACS 1-year estimates; no standard 1-year release for 2020. Shaded band: 90% margin of error.
Show the numbers
| Year | Alaska | New Mexico | Oklahoma | Arizona | United States |
|---|---|---|---|---|---|
| 2005 | 14.0% ±0.5 | 9.1% ±0.2 | 7.1% ±0.2 | 4.4% ±0.1 | 0.7% ±0.0 |
| 2006 | 12.9% ±0.4 | 9.1% ±0.1 | 6.7% ±0.2 | 4.1% ±0.1 | 0.7% ±0.0 |
| 2007 | 13.0% ±0.4 | 8.6% ±0.2 | 6.5% ±0.2 | 4.1% ±0.1 | 0.7% ±0.0 |
| 2008 | 12.5% ±0.6 | 8.6% ±0.2 | 6.2% ±0.2 | 4.1% ±0.1 | 0.7% ±0.0 |
| 2009 | 12.8% ±0.5 | 8.6% ±0.2 | 5.8% ±0.2 | 4.0% ±0.1 | 0.6% ±0.0 |
| 2010 | 14.2% ±0.5 | 8.7% ±0.1 | 6.7% ±0.2 | 4.1% ±0.1 | 0.7% ±0.0 |
| 2011 | 13.8% ±0.5 | 8.5% ±0.2 | 6.6% ±0.2 | 4.1% ±0.1 | 0.7% ±0.0 |
| 2012 | 13.8% ±0.5 | 8.7% ±0.1 | 7.0% ±0.2 | 4.0% ±0.1 | 0.7% ±0.0 |
| 2013 | 13.9% ±0.4 | 8.5% ±0.1 | 7.2% ±0.2 | 3.9% ±0.1 | 0.7% ±0.0 |
| 2014 | 13.8% ±0.4 | 8.9% ±0.1 | 7.1% ±0.1 | 4.0% ±0.1 | 0.7% ±0.0 |
| 2015 | 13.3% ±0.4 | 8.5% ±0.1 | 7.0% ±0.2 | 4.0% ±0.1 | 0.6% ±0.0 |
| 2016 | 14.1% ±0.4 | 8.6% ±0.1 | 7.2% ±0.2 | 4.0% ±0.1 | 0.7% ±0.0 |
| 2017 | 14.2% ±0.5 | 8.8% ±0.1 | 7.3% ±0.2 | 3.9% ±0.1 | 0.7% ±0.0 |
| 2018 | 14.6% ±0.5 | 8.8% ±0.1 | 7.4% ±0.1 | 3.9% ±0.1 | 0.7% ±0.0 |
| 2019 | 15.5% ±0.5 | 8.7% ±0.2 | 7.7% ±0.2 | 4.0% ±0.1 | 0.7% ±0.0 |
| 2021 | 13.5% ±0.6 | 8.1% ±0.2 | 6.8% ±0.2 | 3.3% ±0.1 | 0.5% ±0.0 |
| 2022 | 12.7% ±0.5 | 8.1% ±0.2 | 6.8% ±0.2 | 3.3% ±0.1 | 0.5% ±0.0 |
| 2023 | 13.0% ±0.5 | 8.3% ±0.2 | 6.6% ±0.1 | 3.1% ±0.1 | 0.5% |
| 2024 | 13.5% ±0.5 | 8.3% ±0.2 | 6.6% ±0.1 | 3.1% ±0.1 | 0.5% ±0.0 |
| 2025 | 14.1% ±0.6 | 8.8% ±0.2 | 7.4% ±0.2 | 3.4% ±0.1 | 0.7% ±0.0 |
The survey series of non-Hispanic residents who reported the race alone goes back to 2005. Over two decades, Arizona's share went down from 4.4% in 2005 and New Mexico's down from 9.1% in 2005. In Alaska (not statistically different from 13.9% in 2005) and South Dakota (not statistically different from 8.3% in 20059) the change is within the margins of error. Oklahoma's share rose in the latest year, up from 6.6% in 20244; a single year's change in a survey is a weak basis for a trend. The Census Bureau did not release standard 1-year estimates for 2020, so that year is missing from the line.
Before comparing figures
- Self-identification, not enrollment. Race in federal statistics is what each person reports; the Census Bureau does not check tribal membership. These figures are not counts of enrolled tribal citizens, which tribes keep themselves.
- Reservations are not covered. The figures count residents by state. This site covers states only, so it does not rank states by reservation land or by the number of reservations.
- Three measures, three answers. Alone or in combination (3.2% nationally), the population estimates (2.1%3) and alone, not Hispanic (0.6%4) can rank the same state differently. Compare states on one measure at a time. Because people can report several races, alone-or-in-combination shares of all races add up to more than the whole population.
- Native Hawaiians are a separate group. Federal statistics count Native Hawaiians and other Pacific Islanders as a race of their own, so they are not part of this ranking; Hawaii's American Indian and Alaska Native share is 2.9%1.
- 2020 Census detail. The tribe counts come from the 2020 Census Detailed Demographic and Housing Characteristics File A, released with differential privacy (statistical noise added to protect respondents), so small counts are less exact than large ones.
- Dates. Shares are for 2025 (survey) and July 1, 2025 (estimates); state ranks by number use 2020–2024; tribes are as of April 1, 2020. The District of Columbia is ranked with the states, as in Census Bureau tables.
For each state's full racial breakdown, see the race and ethnicity hub and state pages such as Oklahoma, Alaska, New Mexico and South Dakota.
Questions about the Native American population by state
What percent of Oklahoma is Native American?
17.0% (±0.2 percentage points) of Oklahoma residents reported American Indian or Alaska Native alone or with another race in the 2025 American Community Survey, the 2nd highest1 share in the country. Counting only people who reported that race and no other, the share was 8.1% (±0.20 percentage points7); the Census Bureau's population estimates put it at 9.4%3 on July 1, 2025.
What percent of Alaska is Native?
22.2% (±0.5 percentage points) of Alaskans reported American Indian or Alaska Native alone or in combination with another race in 2025, the highest in the nation1. 14.5% (±0.63 percentage points7) reported that race alone. Most of them are Alaska Native: the 2020 Census counted 102,765 people in Alaska who reported Alaska Native alone and 4,6208 who reported American Indian alone.
Which state has the most Native Americans?
California2, with 584,305 (±28,158) people who reported American Indian or Alaska Native alone in 2025. Arizona (320,497) and Oklahoma (333,862) follow, and their ranks overlap within the margins of error. California has the largest number but a small share of its residents: 1.5%7.
What percent of the US population is Native American?
3.2%1 of US residents reported American Indian or Alaska Native alone or in combination with another race in 2025, and 1.1% (3.9 million7 people) reported it alone. The population estimates, which assign a race to people who answered only "Some other race", give 2.1%3 for July 1, 2025.
Related rankings
Sources
- Census Bureau, American Community Survey 1-year estimates, 2025, table B02010; 2025; released October 29, 2026. data.census.gov
- Census Bureau, American Community Survey 5-year estimates, 2020-2024, table C02003; 2020-2024; released January 29, 2026. data.census.gov
- Census Bureau, Population Estimates Program, Vintage 2025; Vintage 2025 (July 1 2020-2025); released June 25, 2026. www2.census.gov
- Census Bureau, American Community Survey 1-year estimates, 2025, table B03002; 2025; released October 29, 2026. data.census.gov
- Census Bureau, 2024 Cartographic Boundary Files; table cb_2024_us_state_20m; 2024; released April 10, 2025. www2.census.gov
- Census Bureau, Population Estimates Program, Vintage 2025; released January 27, 2026. www2.census.gov
- Census Bureau, American Community Survey 1-year estimates, 2025, table C02003; 2025; released October 29, 2026. data.census.gov
- Census Bureau, 2020 Census Detailed Demographic and Housing Characteristics File A, table T01001; 2020 Census (April 1, 2020); released September 21, 2023. data.census.gov
- Census Bureau, American Community Survey 1-year estimates, 2005-2019 and 2021-2025; 2005-2025 (no standard 2020 1-year release); released October 29, 2026. api.census.gov
Margins of error (±) are at the 90% confidence level. A difference is called significant only when it passes the Census Bureau's test at that level. How every figure is built: methodology. Found an error? Write to [email protected]; corrections are listed on the updates page.