Broadband in 78204 is unusually competitive for a central San Antonio ZIP code. Current ZIP-level records show extensive AT&T fiber and Spectrum cable coverage, a substantial Astound Broadband footprint, and broad fixed-wireless availability from T-Mobile and Verizon. The result is a local market where the actual street and building can matter more than the ZIP-wide provider list.
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Current ZIP-level data show a stronger wired broadband market than the provider lists for many central-city ZIP codes suggest. AT&T fiber and Spectrum cable are both reported across most of the ZIP, while Astound adds a second cable network over a substantial portion of the area. Fixed wireless adds another layer of competition.
Current FCC-derived ZIP-level reporting identifies AT&T fiber across approximately 95% of 78204, with reported maximum speeds reaching 5 Gbps. The unusually high fiber share means 78204 should not be characterized primarily as an older central-city cable market.
Spectrum cable is reported across approximately 98% of the ZIP, while Astound Broadband cable reaches roughly 49%. That creates a meaningful two-network cable comparison in portions of 78204 rather than a single cable incumbent.
Current ZIP-level data report T-Mobile Home Internet at roughly 96% coverage and Verizon fixed wireless at roughly 95%. These networks can provide an alternative where a household prefers wireless service or where the wired provider combination differs at the property.
The table distinguishes provider evidence reported for the ZIP from address-level ordering information. Current FCC-derived reporting is useful for mapping the local market, but location-level verification is necessary before treating any provider as available to a particular property.
| Provider | Technology | 78204 evidence | Advertised maximum | Verify |
|---|---|---|---|---|
|
AT&T Fiber
Major ZIP footprint
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Fiber | Current ZIP-level data report AT&T fiber across approximately 95% of 78204, making it one of the principal wired technologies in the ZIP. | Up to 5 Gbps where available | |
|
Spectrum
Major ZIP footprint
|
Cable | Current ZIP-level reporting shows Spectrum cable availability across approximately 98% of 78204. | Up to 1 Gbps in current ZIP data | |
|
Astound Broadband
Large secondary footprint
|
Cable; limited fiber | Current ZIP-level data report approximately 49% cable coverage and a smaller fiber footprint of about 13%. | Up to 1.5 Gbps in reported locations | |
|
T-Mobile 5G Home Internet
Broad wireless footprint
|
5G fixed wireless | Current ZIP-level reporting identifies T-Mobile Home Internet across approximately 96% of 78204. | Up to 100 Mbps in current ZIP dataset | |
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Verizon 5G Home Internet
Broad wireless footprint
|
Fixed wireless | Current ZIP-level reporting identifies Verizon fixed wireless across approximately 95% of 78204. | Up to 1 Gbps in reported data | |
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EarthLink
Retail fiber option
|
Fiber; DSL; fixed wireless | Current datasets list EarthLink fiber across approximately 95% of 78204. Because EarthLink can sell service over underlying network infrastructure owned by another carrier, its presence should not automatically be counted as a separate physical fiber network. | Up to 5 Gbps on reported fiber service | Verify the underlying network and exact plan |
|
AT&T Internet Air
Fixed-wireless option
|
Fixed wireless | Current ZIP-level datasets separately report AT&T fixed wireless across approximately 97% of 78204. This is a different service model from AT&T Fiber. | Location and network dependent | Check exact wireless eligibility |
|
Satellite providers
Geographic alternative
|
Satellite | Satellite services are geographically relevant throughout 78204 because they do not rely on the same local cable or fiber plant as terrestrial providers. | Provider and plan dependent | Equipment, sky view, latency and plan terms |
The provider descriptions below focus on networks with substantial current evidence in 78204. Retail providers that may use another carrier's underlying infrastructure are identified separately from independent physical networks.
AT&T Fiber is the strongest fiber-specific finding in the current 78204 data. A January 2026 provider report using FCC Broadband Data Collection information from June 30, 2025 reported AT&T fiber availability at approximately 95.2% of the ZIP, with maximum reported speeds up to 5,000 Mbps.
Spectrum has the broadest cable footprint in the current 78204 reporting. Approximately 97.6% of the ZIP is reported as having Spectrum cable service, while only a very small portion is classified separately as fiber.
Astound Broadband is particularly important to 78204 because it adds a second substantial wired network to the ZIP. Current reporting shows approximately 48.9% cable coverage and about 13.3% fiber coverage. The fiber footprint is much smaller than AT&T's, while the cable network covers a significant portion of the ZIP.
T-Mobile Home Internet is a major fixed-wireless option in 78204. Current ZIP-level reporting identifies approximately 95.6% coverage, with a reported average maximum speed around 79 Mbps and a maximum reported tier of 100 Mbps in that dataset.
Verizon is another substantial fixed-wireless competitor in 78204. Current ZIP-level reporting identifies approximately 95.1% fixed-wireless coverage and reports a maximum speed of up to 1 Gbps in the underlying data.
EarthLink appears prominently in current 78204 broadband datasets, including fiber service across approximately 95% of the ZIP. For consumers comparing infrastructure, however, EarthLink should not automatically be treated as a separate physical fiber network from AT&T. Retail providers can sell service using another carrier's infrastructure.
AT&T's fixed-wireless service is separately relevant to 78204. Current ZIP-level data report AT&T fixed wireless at approximately 97.5% coverage. This should not be confused with the much faster AT&T Fiber network reported across roughly 95% of the ZIP.
Satellite internet remains geographically available in 78204, but its role is different from the strong terrestrial broadband market already documented in the ZIP. For most addresses with fiber or cable, satellite is better understood as an alternative network technology rather than evidence of a local wired coverage gap.
The current 78204 market ranges from older DSL and fixed-wireless service to multi-gigabit fiber. The most important local distinction is not simply the advertised download number: the technology reaching the property and the provider choices at that location determine the useful comparison.
Suitable for ordinary browsing, video calls, streaming and moderate household use when the connection remains stable.
Useful for households with several simultaneous users, multiple streaming devices and larger downloads.
Relevant where a property has multi-gig fiber or Astound's higher capacity service and the household regularly moves large amounts of data.
AT&T's current 78204 data reports fiber plans reaching up to 5 Gbps. This level is address-dependent and requires compatible networking equipment to make practical use of the capacity.
The ZIP's central San Antonio location produces an unusual combination of mature cable infrastructure, extensive newer fiber availability, smaller secondary wired networks and broad wireless coverage.
AT&T fiber is reported across approximately 95% of 78204. Astound also has a smaller fiber footprint. Current data therefore support treating fiber as a mainstream technology in the ZIP rather than a niche option.
Spectrum cable is reported across approximately 98% of 78204. Astound cable reaches roughly half of the ZIP, creating meaningful cable competition in portions of the area.
T-Mobile and Verizon both have broad reported fixed-wireless footprints, while AT&T fixed wireless is also reported widely. These services provide another access model without a dedicated wired line to the home.
Satellite remains geographically available throughout the ZIP. Its technical characteristics differ from fiber, cable and 5G, particularly in latency and network architecture.
78204 is a central San Antonio ZIP with a mixture of historic neighborhoods, older single-family housing, multifamily properties, commercial corridors and active redevelopment. That physical pattern helps explain why a ZIP with very high fiber and cable percentages can still produce different provider results from one block or building to the next.
Current ZIP-level reporting places AT&T fiber at approximately 95.2% of 78204. This changes the way the ZIP should be researched: AT&T should be treated primarily as a major fiber competitor, not simply as an older telephone-network provider.
Current reporting identifies Spectrum cable at approximately 97.6% of 78204. The high figure means Spectrum is relevant across nearly the entire ZIP, but it does not mean every building has identical equipment, plan availability or upload performance.
Astound's approximately 48.9% cable footprint is one of the most important ZIP-specific findings. A household in the covered portion may have both Spectrum and Astound cable choices, in addition to AT&T fiber. This is a materially different competitive situation from a ZIP with only one major cable network.
Current reporting identifies approximately 13.3% Astound fiber coverage versus approximately 48.9% cable coverage. The difference matters because the Astound brand alone cannot tell a resident which physical technology is available at a property.
The central 78204 market includes established historic residential areas and a mixture of renovated homes, apartments, condominiums and infill development. Internal wiring and building infrastructure can therefore matter even when the surrounding ZIP has extensive fiber and cable coverage.
The southern portion of the ZIP includes Collins Garden and residential areas around Nogalitos and Collins Garden Park. City records place Collins Garden Branch Library and Collins Garden Park in 78204. The neighborhood context differs from the dense historic core farther north, which is another reason to avoid treating the ZIP as one uniform housing and infrastructure market.
The City of San Antonio identifies the Lone Star District development at 600 Lone Star Boulevard, 78204, as a multi-phase project involving adaptive reuse, retail, entertainment, office, hospitality and multifamily housing. New and redeveloped properties can have internal communications infrastructure that differs from older surrounding housing.
Google Fiber currently identifies San Antonio as an active expansion market and lists areas such as the East Side among its Texas service areas. Current ZIP-level comparisons reviewed for 78204, however, do not establish a meaningful Google Fiber footprint in this ZIP. The responsible interpretation is to monitor address-level expansion rather than list Google Fiber as a confirmed 78204-wide provider.
These findings explain what the current evidence means for residents rather than simply reproducing a provider directory.
| Finding | Evidence | What it means for a 78204 address |
|---|---|---|
| AT&T fiber | Approximately 95.2% fiber coverage in current ZIP-level reporting | AT&T should be checked first as a major fiber network, not treated primarily as legacy DSL. |
| Spectrum cable | Approximately 97.6% cable coverage | Spectrum is relevant across nearly the entire ZIP, although the exact address determines current service and plan. |
| Astound cable | Approximately 48.9% cable coverage | Some properties have a second substantial cable network to compare with Spectrum. |
| Astound fiber | Approximately 13.3% fiber coverage | A smaller portion of 78204 has an additional fiber technology beyond AT&T. |
| T-Mobile Home Internet | Approximately 95.6% fixed-wireless coverage | 5G home internet is a meaningful alternative rather than a rare fallback technology. |
| Verizon fixed wireless | Approximately 95.1% fixed-wireless coverage | Verizon should be checked separately because its wireless network and eligibility can differ from T-Mobile. |
| AT&T fixed wireless | Approximately 97.5% reported coverage | AT&T has a wireless alternative distinct from its extensive fiber footprint. |
| EarthLink fiber | Approximately 95.2% reported fiber coverage | EarthLink can represent a retail choice, but its presence should not automatically be counted as a separate physical fiber network from AT&T. |
| Historic housing | 78204 includes established central San Antonio neighborhoods | Existing wiring, renovations and building construction can influence actual service options. |
| Redevelopment | Lone Star District development includes multifamily and commercial uses | New and redeveloped properties can have different internal infrastructure from older surrounding housing. |
These locations provide useful geographic context for interpreting broadband differences within the ZIP. They are not substitutes for an address-level availability check.
Neighboring ZIP codes can have materially different provider footprints. Use them as separate research areas rather than transferring 78204 availability assumptions across ZIP boundaries.
The correct sequence is to use ZIP-level research to identify the relevant network choices, then verify the exact property with each provider before comparing plans.
FCC-derived datasets are useful for understanding which providers and technologies are reported in 78204. The FCC National Broadband Map provides location-level information about providers, technologies and speeds reported at a specific address. Provider address checkers remain the appropriate source for live ordering eligibility, current plan availability and current pricing.
The local network mix makes it useful to compare physical technology, upload capacity and property-level availability before focusing on the largest advertised download number.
AT&T fiber is reported with symmetric capacity up to 5 Gbps, while Spectrum cable is reported with substantially lower upload capacity. Astound's cable network is also asymmetric. This difference can matter for cloud backups, remote work, large file transfers and other upload-heavy activity.
Spectrum is reported across almost all of 78204, while Astound cable reaches roughly half of the ZIP. Where both are serviceable, a household may have a meaningful second cable network to compare rather than only a fiber-versus-cable decision.
Historic homes, renovated properties, apartments and redevelopment projects can have different internal wiring. A provider listed for the ZIP may therefore be unavailable to one building while serving a nearby property on the same street.
ZIP-level research identifies the local market. Provider address tools determine what can actually be ordered at the property.
This page gives greater weight to official provider and government information for service-area and local-development claims, while using current FCC Broadband Data Collection-derived reporting as the principal ZIP-level coverage layer.
Answers are based on the current provider information and ZIP-specific broadband evidence reviewed for this guide.