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Internet in Oxnard, California

Fiber is available at 61.0% of the 39,597 homes and businesses the FCC counts in Oxnard, and wired broadband of at least 100/20 Mbps at 96.3%. 59.9% of locations have a choice of two or more wired providers at that speed; at 36.4% there is only one.1

FCC National Broadband Map, availability as of June 30, 2026 (data revised November 10, 2026), as reported by providers.

Oxnard in California

Most of Oxnard has two wired networks: Spectrum's network reaches 95.5% of its homes and businesses and Frontier's fiber 59.9%. In the first FCC map, many locations had a third. The share of locations with two or more wired providers at 100/20 Mbps fell from 87.8%2 in June 2022 to 59.9%, a change that ranks 2nd lowest1 among the 343 largest US cities.

Spectrum, Frontier and the rest of the list

Two companies account for nearly all wired service in Oxnard. Spectrum reports service at 95.5% of the city's 39,597 homes and businesses, over cable with advertised downloads up to 1 Gbps; it reports fiber at 0.5%. Frontier reports 60.2%, and at 59.9% that service is fiber, with advertised downloads up to 7 Gbps1. These figures are as of June 30, 2026, in the FCC revision of November 10, 2026.

Internet providers in Oxnard
SpectrumFiber Cable95.5%95.5%1 Gbps35.6%
T-MobileLicensed wireless63.9%15.1%100 Mbps–
FrontierFiber DSL60.2%59.9%7 Gbps0.0%
VerizonLicensed wireless30.9%10.3%300 Mbps–
AT&TFiber DSL Licensed wireless23.8%1.9%5 Gbps–
Yondoo Broadband LLCFiber Cable0.9%0.9%500 Mbps0.8%
FractalVisionFixed wireless0.8%0.0%50 Mbps–
GeoLinksLicensed wireless0.1%0.0%1 Gbps–
AstoundFiber0.0%0.0%5 Gbps0.0%

Source: FCC, National Broadband Map, data as of June 30, 2026. Share of the area's broadband serviceable locations where the provider reports service as of June 30, 2026. "Only wired option" is the share of locations where it is the single wired provider at 100/20 Mbps. Provider-reported and challengeable; speeds are advertised maximums, not measured; no prices. Satellite providers (Starlink, Viasat, HughesNet) report service at nearly every location and are left out of the table.

Below those two, the list thins quickly. Yondoo Broadband reports fiber at 0.9%1 of locations, and a few other wired providers report small numbers of locations. T-Mobile, Verizon and AT&T report fixed wireless home internet, and the three satellite companies report service at every location. The FCC counts locations, not people: a house, an apartment building and a shop are one location each. A provider lists a location as served if it could install service there within ten business days, and anyone can challenge a listing on the FCC map.

Fiber stops where Frontier's network stops

At least one provider reports fiber at 61.0% of Oxnard's locations, against 47.8% across California and 62.6% nationally. Nearly all of it is Frontier's. Two or more fiber providers reach only 0.2%1 of locations, so a location with fiber almost always has exactly one fiber provider.

Fiber available: Oxnard among the 343 largest cities
Oxnard: 61.0%; lowest New Bedford, Massachusetts 0.0%; highest Clarksville, Tennessee 100.0%USOxnard 61.0%

New Bedford, Massachusetts 0.0%Clarksville, Tennessee 100.0%

Source: FCC, National Broadband Map, data as of June 30, 2026. Each dot is a city. FCC file revision of November 10, 2026. Shares are of broadband serviceable locations (homes and businesses), not people.

Show the numbers
AreaFiber available
Chattanooga, Tennessee100.0%
Clarksville, Tennessee100.0%
Lincoln, Nebraska99.9%
Simi Valley, California99.9%
Longmont, Colorado99.9%
Overland Park, Kansas99.3%
Knoxville, Tennessee99.0%
Olathe, Kansas98.1%
Amarillo, Texas98.0%
Greeley, Colorado97.6%
Kansas City, Missouri97.4%
Abilene, Texas97.2%
Rio Rancho, New Mexico97.0%
Bridgeport, Connecticut96.8%
Sugar Land, Texas96.6%
Yonkers, New York96.3%
Independence, Missouri96.2%
Wichita Falls, Texas95.8%
Lee's Summit, Missouri95.8%
Philadelphia, Pennsylvania95.7%
Elizabeth, New Jersey95.4%
Miami Gardens, Florida95.4%
Cary, North Carolina95.1%
Lynn, Massachusetts95.0%
Palm Coast, Florida94.8%
Paterson, New Jersey94.7%
Pittsburgh, Pennsylvania94.7%
Davenport, Iowa94.3%
Kansas City, Kansas94.2%
Conroe, Texas94.1%
Cape Coral, Florida94.0%
San Angelo, Texas94.0%
Pearland, Texas93.9%
Menifee, California93.8%
Newark, New Jersey93.7%
Des Moines, Iowa93.6%
Frisco, Texas93.5%
Stamford, Connecticut93.5%
Round Rock, Texas93.3%
Springfield, Missouri93.0%
Newport News, Virginia92.9%
West Valley City, Utah92.9%
Huntsville, Alabama92.8%
Columbia, Missouri92.6%
Temecula, California92.6%
Fishers, Indiana92.5%
Murrieta, California92.3%
Killeen, Texas92.3%
Lubbock, Texas92.2%
Minneapolis, Minnesota92.0%
Berkeley, California91.6%
Lexington, Kentucky91.6%
St. Paul, Minnesota91.6%
Garland, Texas91.6%
Lafayette, Louisiana91.6%
Raleigh, North Carolina91.5%
Mesquite, Texas91.5%
High Point, North Carolina91.2%
Providence, Rhode Island91.1%
Jersey City, New Jersey91.1%
Richmond, Virginia91.0%
Allen, Texas91.0%
Hillsboro, Oregon91.0%
Yuma, Arizona90.9%
Plano, Texas90.7%
New York, New York90.3%
Carrollton, Texas90.3%
Wichita, Kansas90.3%
Brockton, Massachusetts90.1%
Oakland, California90.1%
Cincinnati, Ohio90.1%
Rochester, Minnesota90.1%
Honolulu, Hawaii90.0%
Salt Lake City, Utah89.8%
Tyler, Texas89.8%
Norman, Oklahoma89.7%
Norfolk, Virginia89.6%
Durham, North Carolina89.5%
South Fulton, Georgia89.5%
McKinney, Texas89.4%
League City, Texas89.4%
Carmel, Indiana89.3%
Richardson, Texas89.2%
West Jordan, Utah88.8%
Fort Wayne, Indiana88.8%
Concord, North Carolina88.7%
Allentown, Pennsylvania88.7%
Louisville, Kentucky88.6%
San Mateo, California88.3%
Buckeye, Arizona88.3%
Omaha, Nebraska88.2%
Chesapeake, Virginia88.2%
San Antonio, Texas88.2%
Tampa, Florida87.9%
Broken Arrow, Oklahoma87.9%
Fayetteville, North Carolina87.8%
Provo, Utah87.6%
Lansing, Michigan87.6%
Arlington, Texas87.4%
Washington, District of Columbia87.4%
Surprise, Arizona87.4%
Grand Prairie, Texas87.4%
Boston, Massachusetts87.3%
New Haven, Connecticut87.2%
Pembroke Pines, Florida87.2%
Murfreesboro, Tennessee87.1%
Hesperia, California87.1%
Miramar, Florida86.8%
Centennial, Colorado86.8%
Nashville, Tennessee86.6%
Downey, California86.2%
Manchester, New Hampshire86.1%
Fort Worth, Texas86.0%
Pueblo, Colorado85.0%
Virginia Beach, Virginia84.8%
Fayetteville, Arkansas84.8%
Pasadena, Texas84.6%
Dallas, Texas84.4%
Waterbury, Connecticut84.3%
Hialeah, Florida83.9%
Topeka, Kansas83.8%
Charlotte, North Carolina83.6%
Long Beach, California83.6%
Fort Collins, Colorado83.5%
Everett, Washington83.0%
Thousand Oaks, California83.0%
Irving, Texas82.8%
Midland, Texas82.8%
Lancaster, California82.5%
Alexandria, Virginia82.4%
Austin, Texas82.4%
Port St. Lucie, Florida82.1%
Victorville, California82.0%
Houston, Texas81.9%
Ontario, California81.9%
Greensboro, North Carolina81.8%
Grand Rapids, Michigan81.6%
Pomona, California81.4%
Oklahoma City, Oklahoma81.1%
Coral Springs, Florida80.9%
West Covina, California80.7%
Gresham, Oregon80.7%
Lowell, Massachusetts80.3%
Odessa, Texas80.0%
Seattle, Washington79.9%
Portland, Oregon79.5%
Mobile, Alabama79.3%
Goodyear, Arizona79.2%
Baton Rouge, Louisiana78.2%
Richmond, California78.2%
Atlanta, Georgia78.1%
Corpus Christi, Texas78.1%
Tallahassee, Florida78.0%
Peoria, Illinois77.8%
Denton, Texas77.5%
Hollywood, Florida77.0%
Denver, Colorado76.9%
Daly City, California76.9%
Spokane, Washington76.9%
Miami, Florida76.8%
Fullerton, California76.8%
Deltona, Florida76.4%
Lewisville, Texas75.9%
Tuscaloosa, Alabama75.8%
Little Rock, Arkansas75.2%
Meridian, Idaho75.1%
Hartford, Connecticut74.9%
Suffolk, Virginia74.9%
Indianapolis, Indiana74.8%
Westminster, Colorado74.8%
Green Bay, Wisconsin74.4%
Colorado Springs, Colorado74.0%
Nampa, Idaho74.0%
Sandy Springs, Georgia73.7%
Jacksonville, Florida73.3%
Tulsa, Oklahoma73.3%
Chula Vista, California72.5%
Lakewood, Colorado72.1%
Madison, Wisconsin71.6%
Edmond, Oklahoma71.5%
New Braunfels, Texas71.3%
Elk Grove, California70.9%
Hampton, Virginia70.8%
Columbia, South Carolina70.4%
Moreno Valley, California70.0%
Huntington Beach, California69.9%
St. Petersburg, Florida69.9%
Syracuse, New York69.7%
Orlando, Florida69.7%
Milwaukee, Wisconsin69.5%
Waco, Texas69.2%
Brownsville, Texas69.2%
South Bend, Indiana69.1%
San Bernardino, California69.0%
Wilmington, North Carolina68.9%
Fort Lauderdale, Florida68.5%
West Palm Beach, Florida67.6%
Torrance, California67.3%
Winston-Salem, North Carolina67.2%
Santa Maria, California67.0%
Garden Grove, California66.2%
Beaumont, Texas65.6%
Laredo, Texas65.2%
Hayward, California65.1%
St. Louis, Missouri65.1%
St. George, Utah64.5%
Evansville, Indiana63.6%
Gainesville, Florida62.9%
Lakeland, Florida62.9%
Davie, Florida62.7%
Springfield, Illinois62.6%
Sparks, Nevada62.6%
Palm Bay, Florida62.6%
Shreveport, Louisiana62.5%
Savannah, Georgia62.2%
Memphis, Tennessee62.1%
Dayton, Ohio61.8%
Boca Raton, Florida61.5%
Pompano Beach, Florida61.4%
Columbus, Georgia61.3%
Roseville, California61.1%
Oxnard, California61.0%
San Francisco, California60.8%
Peoria, Arizona60.8%
Montgomery, Alabama60.7%
Sacramento, California60.1%
El Paso, Texas60.0%
Buffalo, New York59.9%
Rockford, Illinois58.7%
Edinburg, Texas58.6%
Mesa, Arizona58.6%
College Station, Texas58.3%
Athens, Georgia57.1%
Clearwater, Florida57.0%
New Orleans, Louisiana56.9%
Cleveland, Ohio56.1%
Charleston, South Carolina55.4%
Sioux Falls, South Dakota55.1%
Akron, Ohio55.1%
Fort Myers, Florida55.0%
Thornton, Colorado55.0%
Reno, Nevada54.0%
Birmingham, Alabama53.5%
Rochester, New York53.3%
Scottsdale, Arizona53.2%
Santa Ana, California53.1%
Tacoma, Washington53.1%
Toledo, Ohio52.8%
Ann Arbor, Michigan52.7%
Inglewood, California52.4%
Irvine, California52.3%
Aurora, Colorado52.2%
Los Angeles, California51.9%
Burbank, California51.8%
Santa Clara, California51.7%
Glendale, Arizona50.9%
Jackson, Mississippi50.3%
Arvada, Colorado50.2%
Warren, Michigan49.8%
Sunnyvale, California49.7%
Macon, Georgia49.3%
Eugene, Oregon49.0%
Costa Mesa, California47.7%
Boulder, Colorado45.2%
Henderson, Nevada44.9%
Pasadena, California44.8%
Las Vegas, Nevada44.8%
San Diego, California44.6%
Billings, Montana44.3%
North Las Vegas, Nevada44.1%
San Jose, California43.9%
McAllen, Texas43.7%
El Cajon, California43.6%
North Charleston, South Carolina43.2%
Vancouver, Washington42.9%
Vallejo, California42.9%
Chandler, Arizona41.1%
Springfield, Massachusetts41.1%
Aurora, Illinois41.1%
Dearborn, Michigan40.8%
Columbus, Ohio40.4%
Fresno, California39.6%
Glendale, California39.5%
Georgetown, Texas38.5%
Gilbert, Arizona38.4%
Riverside, California38.3%
Fremont, California38.2%
Antioch, California37.7%
Stockton, California37.2%
Concord, California37.0%
Avondale, Arizona37.0%
Palmdale, California36.9%
Chicago, Illinois36.6%
Boise, Idaho36.1%
Anaheim, California36.0%
Carlsbad, California36.0%
Las Cruces, New Mexico36.0%
Bakersfield, California35.5%
Santa Rosa, California35.5%
Worcester, Massachusetts35.3%
Cedar Rapids, Iowa35.2%
Bend, Oregon35.2%
Clovis, California34.9%
Albuquerque, New Mexico34.0%
Tucson, Arizona34.0%
Augusta, Georgia34.0%
El Monte, California33.8%
Phoenix, Arizona31.4%
Salinas, California31.2%
Chico, California30.7%
Fontana, California30.5%
Modesto, California29.7%
Orange, California28.7%
Joliet, Illinois27.8%
Jurupa Valley, California27.8%
Detroit, Michigan27.4%
Bellevue, Washington27.4%
Visalia, California27.3%
Elgin, Illinois27.3%
Salem, Oregon26.9%
Oceanside, California26.7%
Tracy, California24.2%
Ventura, California23.8%
Fargo, North Dakota22.6%
Tempe, Arizona22.3%
Sterling Heights, Michigan22.0%
Fairfield, California21.8%
Rancho Cucamonga, California21.7%
Rialto, California20.7%
Spokane Valley, Washington20.6%
Vacaville, California18.6%
Santa Clarita, California18.3%
Naperville, Illinois18.0%
Baltimore, Maryland16.7%
Kent, Washington15.9%
Escondido, California15.6%
Corona, California13.0%
Renton, Washington10.5%
Quincy, Massachusetts9.0%
Anchorage, Alaska6.2%
Albany, New York2.0%
Cambridge, Massachusetts0.5%
New Bedford, Massachusetts0.0%

Outside Frontier's fiber area, Spectrum is usually the only wired option at 100/20 Mbps. It is the sole wired provider offering 100/20 Mbps at 35.6% of locations, close to the 36.4% of the city that has exactly one such provider. Two wired providers at that speed are reported at 59.8%, and three or more at 0.1%. Wired 100/20 service of any kind is missing at only 3.7%1, and no location in the city depends on satellite alone.

How many wired providers offer 100/20 Mbps at each location: Oxnard
Oxnard
United States

Source: FCC, National Broadband Map, data as of June 30, 2026. Different wired providers (fiber, cable or DSL; FCC provider IDs) reporting 100 Mbps down and 20 Mbps up or more at the same location. Fixed wireless and satellite are not counted.

Show the numbers
AreaNoneOneTwoThree or more
Oxnard3.7%36.4%59.8%0.1%
Ventura3.8%72.1%24.0%0.1%
California6.9%43.2%43.4%6.5%
United States7.8%36.6%44.6%11.1%

A third wire that left the map

The June 2022 picture was different. Then, 40.1% of locations had three or more wired providers at 100/20 Mbps and 87.8% had at least two. Today the three-provider share is 0.1%, and the share with a single wired option has risen from 11.8%2 to 36.4%. Across California the share with two or more wired choices moved the other way, by +11.0 percentage points1.

Other measures fell with it. DSL over telephone copper was reported at 34.2% of locations in June 2022 and is reported at 0.5% now. Locations with two or more fiber networks fell from 7.5%2 to 0.2%, and the overall fiber share slipped by 3.2 percentage points, a change that ranks 2nd lowest1 among large cities, even though Frontier added fiber over the same years.

What changed in Oxnard since June 30, 2022
Two or more wired choices59.9% −27.9 pts
Three or more wired choices0.1% −40.0 pts
DSL available0.5% −33.7 pts
Two or more fiber networks0.2% −7.4 pts

Source: FCC, National Broadband Map, data as of June 30, 2022; FCC, National Broadband Map, data as of December 31, 2025; FCC, National Broadband Map, data as of June 30, 2026. Shares of broadband serviceable locations in each FCC release (latest revision of each); the small number is the change in percentage points since June 30, 2022. The FCC's count of locations is updated with each release, so shares are compared rather than counts.

Show the numbers
MeasureJune 30, 2022December 31, 2025June 30, 2026Change (points)
Two or more wired choices87.8%59.1%59.9%−27.9 pts
Three or more wired choices40.1%0.1%0.1%−40.0 pts
DSL available34.2%0.5%0.5%−33.7 pts
Two or more fiber networks7.5%0.2%0.2%−7.4 pts

The largest single difference between the two releases is Yondoo Broadband. In the June 2022 filings it reported wired service across much of the city, including fiber in some areas; in the June 2026 filings it reports 351 locations. The map records what each provider reports, not why a reported area changed, and nearly all of the drop came before December 31, 2025: the two-or-more share has moved by only +0.8 percentage points1 since then.

Fixed wireless: three carriers, shrinking reach

Licensed fixed wireless, which includes 5G home internet, was reported at 95.8%2 of locations in June 2022, 86.2%3 in December 2025 and 77.1% now, the 10th lowest share among large cities. Statewide it is 88.1%1.

T-Mobile reports 63.9% of locations, with advertised downloads up to 100 Mbps, and offers 100/20 Mbps at 15.1%. Verizon reports 30.9%, up to 300 Mbps, with 100/20 at 10.3%. AT&T, which reported almost nothing in the city in June 2022, now reports 23.8%, nearly all of it fixed wireless, and 100/20 Mbps at 1.9%1. Fixed wireless capacity is shared by everyone on a tower sector, so a carrier's reported area is not a promise that every address can sign up.

Licensed fixed wireless: Oxnard and the US
Ventura94.1%
United States87.3%
Oxnard77.1%

Source: FCC, National Broadband Map, data as of June 30, 2026. FCC file revision of November 10, 2026. Shares are of broadband serviceable locations (homes and businesses), not people.

Show the numbers
AreaLicensed fixed wireless
Ventura94.1%
California88.1%
United States87.3%
Thousand Oaks84.5%
Simi Valley79.6%
Oxnard77.1%

Multi-gigabit on fiber, slower uploads on cable

Frontier's fiber sets the top advertised tier: the fastest advertised download is 2 Gbps or more at 59.9% of locations. At most of the rest, 35.7%, the fastest is about 1 Gbps, Spectrum's cable maximum. A 1 Gbps download is advertised at 95.6% of locations, but gigabit service with uploads of at least 100 Mbps (the FCC's 1,000/100 tier) at 60.2%, below California's 67.4%. That tier has fallen by 4.0 percentage points since June 2022, the 3rd lowest1 change among large cities. All of these are maximum advertised speeds reported by providers, not measurements.

Fastest advertised download speed at each location: Oxnard
Oxnard
United States

Source: FCC, National Broadband Map, data as of June 30, 2026. Maximum advertised download speed (Mbps) of any wired or fixed wireless offer at the location, as reported by providers to the FCC; satellite excluded. Advertised, not measured.

Show the numbers
AreaUnder 25 Mbps or none25–99100–249250–499500–939940–1,9992,000 or more
Oxnard2.5%0.4%0.6%0.1%0.8%35.7%59.9%
Ventura1.5%0.7%1.5%0.2%0.0%77.7%18.4%
California1.7%1.0%1.7%1.0%1.5%30.7%62.5%
United States2.4%1.6%1.8%1.4%0.9%31.0%61.0%

Subscriptions rose while choice fell

More households subscribe than before, even as wired choice narrowed. In the Census Bureau's 2025 survey, 94.4% of Oxnard households had a broadband subscription of any kind (margin of error ±1.7 percentage points), against 84.2% in 2019 (±2.7 percentage points). Households with no internet subscription fell from 15.6%5 to 5.5% (±1.7 percentage points4). In both cases the ranges set by the margins of error do not overlap.

Wired service, meaning cable, fiber or DSL, is the subscription at 80.4% of households (±3.9 percentage points), and 11.5%4 rely on a cellular data plan alone. The survey counts households over a year; the FCC counts locations on one date, so the two are compared only loosely.

Oxnard beside its Ventura County neighbors

Ventura County's cities differ widely. Simi Valley has fiber at 99.9% of locations and Thousand Oaks at 83.0%; next door in Ventura it is 23.8%, and only 24.1%1 of Ventura's locations have two or more wired choices at 100/20 Mbps. Oxnard sits between them. The table shows each city's choice in the first map release beside today's.

Oxnard and other Ventura County cities, June 30, 2026
AreaFiber availableTwo or more wired choices (June 30, 2022)Two or more wired choicesOne wired choice
Oxnard, California61.0%87.8%59.9%36.4%
Ventura, California23.8%28.6%24.1%72.1%
Thousand Oaks, California83.0%83.2%82.8%14.5%
Simi Valley, California99.9%17.6%99.0%0.9%
California47.8%38.9%49.9%43.2%
United States62.6%36.7%55.6%36.6%

Source: FCC, National Broadband Map, data as of June 30, 2026; FCC, National Broadband Map, data as of June 30, 2022. FCC file revision of November 10, 2026. Shares are of broadband serviceable locations (homes and businesses), not people.

The California page maps every county, including Ventura County, and Frontier's page shows where else it reports fiber.

Questions and answers

What internet providers are available in Oxnard, California?

Spectrum reports service at 95.5% of locations and Frontier reports service at 60.2%, almost all of it fiber. T-Mobile (63.9%), Verizon (30.9%) and AT&T (23.8%1) report fixed wireless home internet. HughesNet, Starlink and Viasat report satellite service everywhere. Figures are as of June 30, 2026.

Is fiber internet available in Oxnard?

At 61.0% of homes and businesses, as of June 30, 2026, nearly all of it Frontier's. That is above California's 47.8% and level with the national 62.6%. Two or more fiber networks reach only 0.2%1 of locations.

How many internet providers are there in Oxnard?

5 wired providers and 9 land-based providers in all report service somewhere in the city, but most cover small shares of locations. At a typical location the choice at 100/20 Mbps is two wired providers (59.8% of locations) or one (36.4%1).

Is 5G home internet available in Oxnard?

T-Mobile reports fixed wireless at 63.9% of locations and Verizon at 30.9%, but they offer 100/20 Mbps or more at only 15.1% and 10.3%1. The carriers confirm eligibility address by address.

Checking one address in Oxnard

The figures on this page describe the whole area. Which providers report service at a single home or apartment is shown only on the FCC's own map: search the address at broadbandmap.fcc.gov. If a provider is listed there but cannot actually connect you within ten business days, or the location is missing or misplaced, the map has a button to file a challenge; providers must respond, and corrections flow into later releases. Prices and plans are not part of the FCC data: each provider must show them on its broadband facts label at the point of sale.

More on internet in California

The state picture, county by county: internet in California. Other large cities in the state: Los Angeles, San Diego, San Jose, San Francisco, Fresno, Sacramento, Long Beach, Oakland, Bakersfield, Anaheim, Stockton and Riverside. Compare Oxnard with any other city or state in the comparison tool.

Sources

  1. FCC, National Broadband Map, data as of June 30, 2026; Availability as of June 30, 2026; released November 10, 2026. broadbandmap.fcc.gov
  2. FCC, National Broadband Map, data as of June 30, 2022; Availability as of June 30, 2022; released May 10, 2024. broadbandmap.fcc.gov
  3. FCC, National Broadband Map, data as of December 31, 2025; Availability as of December 31, 2025; released November 3, 2026. broadbandmap.fcc.gov
  4. Census Bureau, American Community Survey 2025 1-year detailed tables; 2025 (calendar-year sample); released October 29, 2026. api.census.gov
  5. Census Bureau, American Community Survey 2019 1-year detailed tables; 2019. 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.