Internet providers in Antioch, California

Three wired providers on paper, two in practice

Ask how many companies run wires to homes in Antioch and the answer from the FCC data is 2, a count that ranks tied for 2nd lowest among the 343 US cities of 100,000 or more, as of June 30, 2026. In practice it is two. Xfinity reports service at 99.6% of the city's 33,471 homes and businesses and AT&T at 93.8%¹. In June 2022 the list had 3² wired names.

"Reported" means the provider tells the FCC it serves a location or could connect it within ten business days in a standard installation. Anyone can challenge a claim on the FCC National Broadband Map, which is also where to check one address. The figures cover the city limits as drawn for the 2020 Census, in the file revision of November 10, 2026. Satellite appears in the table because Starlink, HughesNet and Viasat report every location; none of them offers 100/20 Mbps here.

Fiber means AT&T, at just over a third of the city

Fiber is reported at 37.7% of Antioch's locations, the 56th lowest share among large cities, against 45.2% for Contra Costa County, 47.8% for California and 62.6% nationally. AT&T accounts for nearly all of it, with fiber at 37.6% of locations and advertised downloads up to 5 Gbps. Xfinity reports fiber at 0.1%. Only 2 companies report fiber anywhere in the city, a count that ranks tied for 3rd lowest among large cities, and two fiber networks at the same location are reported at 5¹ locations.

The fiber share has risen from 26.2%² in June 2022 to 37.7%, a gain of 11.5 percentage points, with 2.2 percentage points¹ of that since December 31, 2025.

Outside the fiber area, one fast wire

Wired service at 100/20 Mbps is reported at 99.6% of locations, so speed is rarely the gap; choice is. Exactly one wired provider offers 100/20 Mbps at 55.5% of Antioch's locations, a share that ranks 53rd highest among large cities, compared with 43.2% statewide. Two or more such providers are reported at 44.1%, and three at 0.0%¹.

NoneOneTwoThree or more

Antioch

Concord

California

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

Area	None	One	Two	Three or more
Antioch	0.4%	55.5%	44.1%	0.0%
Concord	0.1%	3.3%	53.7%	42.9%
California	6.9%	43.2%	43.4%	6.5%
United States	7.8%	36.6%	44.6%	11.1%

The single fast wire is Xfinity's at 55.4% of locations. AT&T reaches far more of the city than its fiber does, but it offers 100/20 Mbps at only 45.5%¹; elsewhere its service is DSL or fixed wireless with advertised downloads of 100 Mbps at most. Concord, also in Contra Costa County and with a similar fiber share, has two cable networks, which is why its chart looks so different from Antioch's.

Copper is shrinking faster than fiber is growing

Copper DSL, nearly all of it AT&T's, covered 77.7%² of locations in June 2022 and 66.8% in June 2026, a drop of 10.9 percentage points¹, larger than the fiber gain over the same period. Because the FCC's list of locations changes with each release, these are shares, not counts.

June 30, 2022December 31, 2025June 30, 2026

DSL available66.8% −10.9 pts

Fiber available37.7% +11.5 pts

Two or more wired choices44.1% +11.5 pts

2 Gbps or more88.4% +70.4 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

Measure	June 30, 2022	December 31, 2025	June 30, 2026	Change (points)
DSL available	77.7%	67.3%	66.8%	−10.9 pts
Fiber available	26.2%	35.5%	37.7%	11.5 pts
Two or more wired choices	32.6%	42.0%	44.1%	11.5 pts
2 Gbps or more	18.0%	81.7%	88.4%	70.4 pts

The bigger change in what is advertised came from cable. The share of locations whose fastest advertised download is 2 Gbps or more rose from 18.0% to 88.4%, and gigabit service with uploads of at least 100 Mbps (the FCC's 1,000/100 tier) from 26.2%² to 88.6%. With fiber at 37.7%¹, most of those locations get that tier over Xfinity's cable network. These are maximum advertised speeds, not measurements.

Wireless: Unwired Ltd and the carriers

Beyond the two wired networks, any further choice in Antioch comes over the air. Licensed fixed wireless at 100/20 Mbps is reported at 75.7% of locations, up from 11.9%² in June 2022, and counting wireless, 44.0%¹ of locations have three or more providers at that speed.

The carriers' footprints are wide and their 100/20 footprints narrow. Unwired Ltd reports 100/20 Mbps everywhere it reports service. The number of companies reporting licensed fixed wireless in the city rose from 2² in June 2022 to 5. Wireless capacity on a tower sector is shared, so a reported location is not a guaranteed sign-up. Fixed wireless is the only option at 100/20 Mbps for 110 locations, and satellite is the only service of any kind at 2¹.

One household in five on a phone plan alone

The Census Bureau's 2025 survey counts households, not locations, and its estimates for a city this size carry wide margins. In Antioch, 19.5% of households had only a cellular data plan for internet (margin of error ±5.7 percentage points), against 12.9% across California; by point estimate that ranks 20th highest among large cities. Subscriptions to cable, fiber or DSL were reported by 72.7% (margin ±7.2 percentage points), against 78.8%⁴ statewide. The steadier five-year survey for 2020–2024 puts the wired share at 79.8% (margin ±1.3 percentage points⁵).

Wired 100/20 Mbps available (FCC, share of locations)99.6%

Households subscribing to cable, fiber or DSL (Census)72.7% ±7.2

Households relying only on a cellular data plan19.5% ±5.7

Households with no internet subscription4.7% ±2.3

Source: FCC, National Broadband Map, data as of June 30, 2026; Census Bureau, American Community Survey 2025 1-year detailed tables. Availability is a share of locations as of June 30, 2026 (FCC); subscriptions are a share of households from the American Community Survey, 2025 (whiskers: 90% margin of error). Different units and dates: read the gap as a sign, not an exact number.

Show the numbers

Measure	Share	MOE
Wired 100/20 Mbps available (FCC, share of locations)	99.6%
Households subscribing to cable, fiber or DSL (Census)	72.7%	±7.2
Households relying only on a cellular data plan	19.5%	±5.7
Households with no internet subscription	4.7%	±2.3

Wired service is reported almost everywhere, so the gap between what is available and what is bought is not a coverage gap. The data do not say why households choose a phone plan alone.

Antioch beside nearby cities

Concord and Richmond share Contra Costa County with Antioch; Vallejo and Fairfield are in neighboring Solano County. The California page maps every county, and the Xfinity and AT&T pages show each company's footprint across the country.