Round Rock, Texas · ZIP 78665 broadband research
Last reviewed October 6, 2026 · Availability varies by exact address
ZIP 78665 · Round Rock, Texas

Internet Providers in 78665

ZIP code 78665 is one of Round Rock's more competitive broadband areas, with fiber networks from Google Fiber and AT&T, cable service from Spectrum and Astound Broadband, and fixed-wireless alternatives from T-Mobile and Verizon. Current broadband datasets also show additional smaller fixed-wireless networks in portions of the ZIP.

The local market is changing because Google Fiber has been building a new citywide fiber network since 2023. That makes 78665 different from a ZIP where residents are limited to one established wired network: the practical choice at an individual address may now involve competing fiber, cable and 5G options.

Address-level verification: A ZIP code identifies a service area, not a guaranteed service location. Apartment buildings, subdivisions, new construction and individual streets can have different provider lineups.

Check another ZIP code

Use a five-digit ZIP to open the matching local broadband research page.

For 78665, continue below for provider, technology and Round Rock-specific findings.

Fiber Google Fiber + AT&T
Maximum reported 8 Gbps
Cable Spectrum + Astound
Wireless T-Mobile + Verizon 5G

What the 78665 broadband evidence shows

The most useful distinction in this ZIP is not simply the number of providers. It is the mix of wired networks and the continuing expansion of new fiber infrastructure.

8 Gbps

Highest reported fiber tier

Current Google Fiber plans include symmetrical 8 Gbps service in eligible markets. Broadband availability data reports 8 Gbps fiber in parts of the Round Rock market.

2+

Established fiber networks

AT&T Fiber already serves portions of Round Rock, while Google Fiber's newer network has been constructed across the city since 2023.

1 Gbps

Major cable tier

Spectrum's current Round Rock service page advertises internet plans up to 1 Gig. Astound also appears in current Round Rock broadband datasets.

5G

Fixed-wireless alternatives

T-Mobile and Verizon both have home-internet products in the Round Rock market, giving some 78665 addresses a wireless alternative to wired service.

78665 internet provider comparison

This comparison separates network type from marketing claims. Speeds shown are advertised maximums or current provider-market figures, not a guarantee for every address.

Provider Connection Current advertised maximum 78665 / Round Rock evidence What to verify
Google Fiber
Round Rock network 		Fiber Up to 8 Gbps symmetrical Google Fiber began Round Rock construction in 2023. Current broadband datasets report Google Fiber in the Round Rock market and ZIP-level listings identify it in 78665. Exact street and serviceable location
AT&T Fiber
Confirmed Round Rock market 		Fiber Up to 5 Gbps where available AT&T's current Round Rock page lists 78665 among Round Rock ZIP codes and states that fiber is available in many neighborhoods. Fiber eligibility and speed tier at address
Spectrum
Round Rock service 		Cable / fiber-powered network Up to 1 Gbps on current Round Rock page Spectrum has a dedicated Round Rock service page advertising 100 Mbps, 500 Mbps and 1 Gig plans. Exact address and current promotional rate
Astound Broadband
ZIP-level listing 		Cable and fiber Up to 1.5 Gbps in current broadband datasets Current Round Rock broadband data lists Astound among the city's fiber and cable providers, and ZIP-level provider datasets identify Astound in 78665. Whether the location is on cable or fiber and available tier
T-Mobile 5G Home Internet
Fixed wireless 		5G fixed wireless Typical 170–498 Mbps download on Amplified T-Mobile operates a home-internet location in 78665 and current Round Rock broadband datasets report broad 5G home coverage. Address eligibility and available gateway tier
Verizon 5G Home Internet
Fixed wireless 		5G fixed wireless Up to 300 Mbps on current 5G Home Ultimate Verizon lists 5G Home Internet in the Round Rock/Austin market. ZIP-level broadband listings also identify Verizon service in 78665. Address eligibility and network capacity

Provider presence does not mean every address can order that provider. FCC broadband data is reported at individual location points, while some secondary ZIP datasets use modeled or aggregated coverage. This page therefore treats ZIP-level figures as research evidence rather than a promise of service.

Internet providers serving the 78665 area

The local market has an unusually important fiber-development story: Google Fiber's network was still being built after AT&T Fiber was already established in Round Rock. Cable and 5G provide additional alternatives.

Fiber

Google Fiber

8 Gbps Current maximum tier
$70–$150 Current 1/3/8 Gig plan range

Google Fiber is the most consequential new wired entrant in Round Rock. The City of Round Rock approved its public-right-of-way agreement in 2022, construction began in southeast Round Rock in September 2023, and the city reported more than 300,000 linear feet of microtrenching completed by July 2024.

Google Fiber's current residential lineup includes Core 1 Gig at $70/month, Home 3 Gig at $100/month and Edge 8 Gig at $150/month in markets where those products are offered. Current Round Rock availability still depends on the individual service location.

Fiber network expanding in Round Rock
Fiber

AT&T Fiber

5 Gbps Where available
Symmetrical Fiber upload/download tiers

AT&T has an established fiber presence in Round Rock. Its current local service page specifically lists ZIP 78665 among the Round Rock ZIP codes associated with AT&T's fiber service area.

AT&T currently advertises fiber speeds up to 5 Gbps where available. The provider's own availability guidance emphasizes address-level checking because different neighborhoods and locations can receive different speed tiers.

Current Round Rock fiber provider
Cable

Spectrum

1 Gbps Current Round Rock maximum
100 / 500 / 1G Current advertised tiers

Spectrum remains a major wired alternative in Round Rock. Its current Round Rock page lists 100 Mbps, 500 Mbps and 1 Gig internet plans and states that service is available in the city.

Spectrum's network is cable-based at the customer connection even though the provider describes the broader network as fiber-powered. Upload performance therefore should not be assumed to match a symmetrical fiber connection simply because the maximum download speed reaches 1 Gig.

Cable network
Cable / Fiber

Astound Broadband

1.5 Gbps Current Round Rock data maximum
Mixed network Cable and fiber reported

Astound appears in current Round Rock broadband datasets as both a cable and fiber provider. ZIP-level provider data also identifies Astound in 78665, although coverage is substantially more limited than the largest citywide cable footprint.

The important address-level question is which Astound network reaches a particular location. A fiber listing and a cable listing can have very different upload characteristics, so the connection type should be confirmed rather than inferred from the provider name alone.

ZIP-level provider evidence
Fixed Wireless

T-Mobile 5G Home Internet

170–498 Mbps Typical Amplified download range
12–55 Mbps Typical Amplified upload range

T-Mobile provides a fixed-wireless home-internet option in the Round Rock market. The company also operates a T-Mobile Home Internet location on East Palm Valley Boulevard in ZIP 78665.

T-Mobile's current broadband disclosure gives typical download and upload ranges for its Amplified plan rather than promising a fixed speed at every address. Wireless capacity, signal conditions and the service location therefore matter when comparing it with wired providers.

5G home internet
Fixed Wireless

Verizon 5G Home Internet

Up to 300 Mbps Current Ultimate tier
5G Cellular home connection

Verizon 5G Home Internet is another wireless alternative in the broader Round Rock market and appears in current ZIP-level broadband listings for 78665.

Verizon's current plans advertise up to 100 Mbps, 150 Mbps or 300 Mbps depending on the plan and location. Verizon explicitly requires an address check because not every location with 5G cellular coverage is eligible for 5G Home Internet.

Address eligibility required

How the advertised speed tiers compare in 78665

Speed is only one part of the local comparison. Fiber's main technical distinction is the ability to provide high upload capacity alongside high download capacity.

Up to 300 Mbps

300 Mbps

This range includes lower-tier fiber and 5G home products. For many homes, it is sufficient for ordinary browsing, video calls and multiple simultaneous connections, but the exact wireless performance can vary.

500 Mbps–1 Gbps

1 Gbps

This is where 78665 has several competing wired choices. Spectrum reaches 1 Gig in Round Rock, while AT&T and Google Fiber offer fiber tiers at or above this level where service is available.

Multi-gig fiber

3–8 Gbps

Google Fiber currently advertises 3 Gig and 8 Gig symmetrical products. These tiers are address-dependent and should be treated as eligible-location offerings rather than ZIP-wide availability.

Connection types in ZIP 78665

The choice between fiber, cable and fixed wireless can matter more than a small difference in advertised download speed.

Fiber

Google Fiber and AT&T Fiber make fiber the defining competitive feature of the 78665 market. Fiber can provide symmetrical upload and download service and supports the area's multi-gigabit tiers.

Cable

Spectrum and Astound provide established wired alternatives. Cable can deliver high download speeds, but upload capacity can be considerably lower than on a symmetrical fiber plan.

5G Fixed Wireless

T-Mobile and Verizon use cellular networks rather than a wired last-mile connection. Availability can be attractive where wired choices are limited, but performance is more dependent on signal and network capacity.

Satellite

Satellite services such as Starlink, Hughesnet and Viasat can serve locations outside traditional wired footprints. They are more relevant as a coverage fallback than as the primary competitive story in the developed portions of 78665.

What makes 78665 different from a generic Round Rock broadband page?

ZIP 78665 covers an important east and southeast portion of Round Rock, including major institutional, residential, entertainment and transportation corridors. Those land uses help explain why address-level broadband research matters here.

Texas State University Round Rock Campus

Texas State University's Round Rock campus is at 1555 University Blvd., Round Rock, TX 78665. The campus includes multiple buildings on University Boulevard and represents a substantial institutional concentration within the ZIP. Broadband research for nearby housing should therefore account for apartment and student-oriented properties as well as conventional detached homes.

East Palm Valley Boulevard corridor

East Palm Valley Boulevard is a significant transportation and commercial corridor within 78665. Dell Diamond is located at 3400 E Palm Valley Blvd., while Kalahari Resorts is at 3001 Kalahari Blvd. The corridor combines established residential areas with major commercial and entertainment uses, so provider availability can vary substantially by property type and location.

Google Fiber construction history

Round Rock is not simply a mature cable market. City records show that Google Fiber received a public-right-of-way agreement in 2022, began construction in southeast Round Rock in September 2023 and continued microtrenching through 2024 and into 2025. The city's July 2024 update reported more than 300,000 linear feet of microtrenching.

Mixed residential development

Round Rock has continued adding single-family, townhome and multifamily housing. That matters for broadband research because a new subdivision, apartment complex or institutional property can have a different provider set from an older home several blocks away, even inside the same ZIP code.

Local broadband findings for 78665

These findings are intended to answer what the ZIP-specific evidence tells residents that a generic “Round Rock internet providers” list does not.

Local finding Evidence Why it matters for 78665
Fiber competition is expanding Google Fiber began constructing a new Round Rock network in 2023 while AT&T already had fiber service in the city. Some addresses can now compare two fiber networks rather than choosing only between a fiber provider and an incumbent cable network.
Google Fiber's buildout began in southeast Round Rock The City of Round Rock identified southeast Round Rock near Roundville Lane as the starting point for construction in September 2023. Fiber availability should not be assumed to have arrived uniformly across every part of the ZIP at the same time.
78665 has both institutional and residential land uses Texas State University's Round Rock campus is located in 78665, alongside major Palm Valley Boulevard destinations and surrounding residential areas. Apartment, campus-adjacent and single-family properties may have different provider choices even when they share the same ZIP.
Cable remains an important alternative Spectrum has a dedicated Round Rock service footprint, while Astound appears in current Round Rock and ZIP-level broadband datasets. Residents who do not have both fiber networks at their address may still have a choice between cable and fixed wireless.
5G home internet adds another layer of competition T-Mobile and Verizon both market fixed-wireless home internet in the Round Rock area, with ZIP-level listings identifying both in 78665. Wireless service can provide an alternative when a particular address lacks a preferred wired provider or when installation constraints matter.
ZIP-wide percentages should be treated cautiously Third-party ZIP datasets produce different coverage estimates, while the FCC's broadband map works at individual location points. A provider shown as available somewhere in 78665 is not automatically available at every house, apartment or business in the ZIP.

Important 78665 areas and development context

These locations are included because they help explain the physical and development pattern of the ZIP, not because every address within them has the same ISP lineup.

Texas State University Round Rock

The Round Rock campus at 1555 University Blvd. places a major university and several campus buildings inside 78665. Housing and commercial properties around the campus should be checked individually for wired service.

Dell Diamond

Dell Diamond is at 3400 E Palm Valley Blvd. in ZIP 78665. The stadium and surrounding entertainment area are part of the Palm Valley corridor that connects major residential and commercial destinations.

Kalahari / U.S. 79 corridor

Kalahari Resorts is at 3001 Kalahari Blvd., across from Dell Diamond and Old Settlers Park. The large resort and convention complex adds a major commercial destination to the eastern portion of the ZIP.

University Boulevard corridor

University Boulevard connects the TXST Round Rock campus with surrounding development and transportation routes. Service availability can change between institutional parcels, apartments and nearby residential streets.

Palm Valley Boulevard

The Palm Valley corridor includes major destinations, established development and access toward the broader Round Rock transportation network. Wired and wireless availability should be evaluated at the property level.

Newer residential development

Round Rock's continued housing development increases the importance of checking the actual service location. New streets and newly occupied buildings can be connected to networks on different schedules.

Nearby Round Rock and north Austin-area ZIP codes

Neighboring ZIP codes can have substantially different broadband footprints. Use the ZIP rather than assuming that a provider serving one part of Round Rock reaches every nearby address.

78664 78681 78660 78613 78628 78728 78753 78754

How this 78665 provider research was verified

Provider lists were not created by simply copying a national ISP directory. The page combines provider-market evidence, ZIP-level listings, FCC methodology and Round Rock-specific public records.

1. Provider sources

Current provider pages were checked for Round Rock service, advertised speed tiers, product type and current plan information. Provider pages are treated as stronger evidence for product details than third-party comparison sites.

2. Broadband datasets

Current broadband mapping sources using FCC Broadband Data Collection information were used to identify provider technologies and maximum advertised speeds in the Round Rock market. ZIP-level sources were used only as supporting evidence.

3. Local records

City of Round Rock records were used to verify the Google Fiber franchise, construction start and microtrenching progress. Texas State University, Dell Diamond and Kalahari sources were used to establish ZIP-specific local context.

How to compare providers at a 78665 address

The most useful comparison starts with the networks actually available at the property, then evaluates speed, upload capacity, pricing and contract terms.

Use this order when comparing service

  • Confirm the provider at the exact address. Do not treat ZIP-level coverage as proof that a specific home or apartment can order service.
  • Identify the physical connection. Fiber, cable and 5G fixed wireless behave differently even when their advertised download speeds look similar.
  • Compare upload speeds. This is especially relevant for remote work, cloud backups, large file transfers, content creation and households that regularly send large amounts of data.
  • Separate standard pricing from promotional pricing. A low introductory rate should not be treated as the long-term monthly cost.
  • Check equipment and installation terms. The advertised internet price may include a gateway or Wi-Fi equipment for one provider and require an additional option for another.
  • Consider the address type. A detached home, apartment, student-oriented property and newly constructed building can have different service options within 78665.

Check availability before choosing a 78665 provider

ZIP-level research identifies the networks that matter in the area. The final provider decision should be based on the exact service address, available technology, current plan terms and the connection's upload and download capabilities.

Open FCC Broadband Map

Sources and methodology

This page was researched using current provider information and local public sources. Coverage figures are not presented as universal ZIP-wide guarantees.

  • FCC National Broadband Map / Broadband Data Collection: Used as the underlying reference framework for location-level broadband availability. Current secondary mapping data used for this page is based primarily on December 2025 FCC BDC data, published in May 2026 with revisions through July 2026.
  • City of Round Rock — Google Fiber: City records document the 2022 public-right-of-way agreement, September 2023 construction start in southeast Round Rock, and continuing microtrenching construction.
  • AT&T Round Rock Fiber: AT&T's current Round Rock page lists ZIP 78665 among the city's ZIP codes associated with fiber service and states that availability depends on the exact address.
  • Spectrum Round Rock: Spectrum's current Round Rock page lists 100 Mbps, 500 Mbps and 1 Gig internet plans and provides current Round Rock pricing information.
  • Google Fiber: Current Google Fiber product information lists Core 1 Gig at $70/month, Home 3 Gig at $100/month and Edge 8 Gig at $150/month, subject to market availability.
  • T-Mobile Home Internet: Current plan disclosures provide typical download/upload ranges for its fixed-wireless products. T-Mobile also operates a Home Internet location in ZIP 78665.
  • Verizon 5G Home Internet: Current Verizon product information lists 5G Home tiers up to 300 Mbps and requires address-level eligibility checking.
  • Texas State University Round Rock: The university identifies its Round Rock campus at 1555 University Blvd., Round Rock, TX 78665.
  • Round Rock Express / Dell Diamond: Dell Diamond is identified at 3400 E Palm Valley Blvd., Round Rock, TX 78665.
  • Kalahari Resorts: Kalahari Resorts & Conventions identifies its Round Rock property at 3001 Kalahari Blvd., Round Rock, TX 78665, across from Dell Diamond and Old Settlers Park.

Research standard: provider availability and pricing can change after publication. Where provider pages, FCC data and ZIP-level aggregation differ, this page uses the narrower statement and directs readers to address-level verification rather than presenting the highest reported coverage figure as universal.

Frequently asked questions about internet in 78665

Answers focus on the current broadband market and the limitations of ZIP-level availability research.

What internet providers serve ZIP code 78665?

Current research identifies Google Fiber, AT&T Fiber, Spectrum, Astound Broadband, T-Mobile 5G Home Internet and Verizon 5G Home Internet among the major wired and fixed-wireless options associated with 78665 and the broader Round Rock market. Smaller fixed-wireless and satellite providers may also appear at individual locations.

Is Google Fiber available in 78665?

Google Fiber is building and operating a fiber network in Round Rock. Construction began in southeast Round Rock in September 2023, with service introduced as portions of the network were completed. Eligibility in 78665 depends on the specific address.

What is the fastest internet in 78665?

Google Fiber currently advertises an 8 Gbps symmetrical residential product in eligible markets, and current broadband datasets report 8 Gbps fiber in parts of Round Rock. An 8 Gbps plan should not be interpreted as available throughout the entire ZIP.

Does AT&T Fiber serve Round Rock ZIP 78665?

Yes. AT&T's current Round Rock fiber page lists 78665 among the Round Rock ZIP codes associated with its fiber service area. AT&T advertises speeds up to 5 Gbps where its fiber network is available.

Does Spectrum serve 78665?

Spectrum serves Round Rock and currently advertises 100 Mbps, 500 Mbps and 1 Gig plans on its Round Rock service page. The exact plan and current price still need to be checked against the service address.

Does Astound Broadband serve 78665?

Astound appears in current Round Rock broadband datasets and ZIP-level provider listings for 78665. Its network footprint is more limited than some larger citywide providers, so address-level verification is necessary.

Are T-Mobile and Verizon 5G Home Internet available in 78665?

Both providers have home-internet products in the Round Rock market and appear in ZIP-level broadband listings for 78665. Fixed-wireless eligibility depends on the exact location and available cellular network capacity.

Why can two homes in 78665 have different internet choices?

Broadband networks are built to individual locations, streets, buildings and service areas rather than ZIP codes. Apartment buildings, new subdivisions, older neighborhoods and institutional properties can therefore have different provider lineups even when they share the same 78665 ZIP code.

Availability disclaimer: This page is an informational broadband research resource, not a guarantee of service. Provider availability, technology, speeds, prices, installation terms and promotions can change. ZIP-level and city-level data should not be interpreted as proof that a provider serves every address. Always confirm current availability and plan terms directly at the service address before ordering.

Check the FCC Broadband Map