Upgrading California’s Network for More Connectivity

AT&T Blog Team
October 6, 2025
Expanding and Investing in Broadband


Upgrading California’s Network for More Connectivity

Everything we do is with connection in mind. More connection means more opportunity and more possibility for cities, counties and states across the country.

In California, we invested more than $14 billion in our network infrastructure from 2020-2024 to connect more people to greater possibility. We’re working to expand access to broadband to as many residents as possible.

Every Californian deserves access to fast, reliable connectivity when it matters most – whether it’s an important call to a family member or friend, the internet that powers work or online learning, or the connection that first responders rely on. It’s this connectivity that’s powering economic growth and supporting job creation across America.

Here’s the latest on how we’re making it happen.

New Site Builds

September 2025

Already this year, across the Central Valley, North Coast, Sacramento Valley, Central Coast, San Diego County, Bay Area, and Greater Los Angeles, we’ve expanded coverage and capacity with new cell sites, including:

  • A new site in West Point giving residents, public safety, businesses and visitors increased coverage and capacity along the Highway 26 corridor.
  • In Mendota, a new site is enhancing highway coverage along the hilly I-5 area near West Kamm Avenue intersection and for the agricultural community east of I-5, bounded by Dinuba Avenue and Manning Avenue to the north, and Hwy-33 and Derrick Avenue to the east.
  • A new site in Los Banos, providing additional coverage and capacity at AG Sports Complex and Dog Park, Vineyard Basin Park and Soccer Field, and surrounding residential areas.
  • Additional new cell sites in Delhi, Edwards Air Force Base, Madera, Manteca, Modesto, Oakdale, Patterson, Ripon and Stockton.
  • A new site in Sebastopol provides additional coverage in the town of Occidental.
  • In Inverness, a new site increases coverage in Drakes Bay, Point Reyes, and Point Reyes National Sea Shore.
  • In Dillon Beach, a new site improves coverage in the town of Dillon Beach and Bodega Bay.
  • Additional new cell sites in Santa Rosa.
  • A new site in Gonzales, enhancing coverage in the town of Gonzales and Highway 101 from Soledad to Salinas.
  • In Nipomo, a new site provides additional coverage to residents, public safety and businesses around Nipomo High School, Central Coast New Tech High School, nearby grocery stores, restaurants and shopping areas.
  • A new site in Lincoln enhancing coverage in the residential community north of Nicolaus Road and Nelsons Lane, and at the Lincoln Regional Airport.
  • In Winters, a new site provides improved coverage to the residential and commercial establishments in the city, as well as travelers along I-505 near Winters.
  • Additional new cell sites in Arboga, Davis, Fairfield, Rocklin, Sacramento, South Lake Tahoe and Truckee.
  • In Oceanside, a new site is enhancing coverage at the new Frontwave Arena.
  • A new site in Escondido, providing additional coverage for residents, public safety and businesses near Loma la Luna and Lilac Ridge Road, including Lilac Oaks Campground and Champagne Lakes.
  • Additional new cell sites in Chula Vista, National City, and Vista.
  • A new site in Pacifica that improves coverage to residents along Park Pacifica Avenue, Yosemite Drive, Grand Teton Drive, Oddstad Boulevard and Frontier Parkland.
  • In Livermore, a new site provides additional coverage and capacity in residential and commercial areas around Livermore Public Library, Civic Center and East Avenue Middle School.
  • Additional new sites in Alameda, Hayward, Redwood City, South San Francisco.

“San Francisco’s opportunities are again widened with more connectivity across more communities,” said Rodney Fong, President and CEO of the San Francisco Chamber of Commerce. “We hope to always empower access for the next generation of San Franciscans no matter where they live. This is truly an investment for the future for a region always looking forward.”

  • A new site in Riverside, near Murrieta Road and Corson Avenue that improves coverage to residents and public safety in the Hidden Hills Park, Canyon Hills and Sierra Sky communities.
  • Two new sites in San Bernardino providing additional capacity and coverage in Downtown San Bernardino South, Sorrento Plaza and King Tut Corner, as well as San Bernardino International Airport and Olivewood Business Park.
  • Additional new sites in Adelanto, Anaheim, Apple Valley, Barstow, Big Bear Lake, Burbank, Cabazon, Culver City, El Segundo, Fort Irwin, Highland, Huntington Beach, Irwindale, Lakewood, Long Beach, Los Alamitos, Menifee, Orange, Panorama City, Playa Vista, Pomona, Rialto, San Jacinto, Santa Clarita, Seal Beach, Torrance, Twentynine Palms, Ventura, West Hollywood, and Whittier.

“High-speed connectivity is a catalyst for innovation, small business growth, and long-term economic resilience,” said Maria S. Salinas, President & CEO of the Los Angeles Area Chamber of Commerce. “AT&T’s investment across the Greater Los Angeles Region represents a meaningful commitment to closing the digital divide and expanding access to the tools communities need to compete in today’s economy. This kind of private-sector leadership ensures that opportunity reaches every corner of our region.”

August 2024

Across San Diego County, we’ve expanded coverage and capacity with new cell sites, including:

  • A new cell site located in Palomar Mountain in rural Northeast San Diego County, bringing additional mobile capacity and coverage for residents, visitors and public safety agencies on FirstNet. Additional coverage includes Bailey’s on Palomar Lodging, Retreat and Events Center, The Lookout and Silvercrest Picnic Area.
  • In Chula Vista, a new cell site is providing additional capacity and coverage for residents and public safety agencies on FirstNet in the Tavera and Avila communities, Montecito Park, Otay Ranch High School and the Chula Vista Fire Department Station 7.

“AT&T’s investments will benefit Chula Vista residents and businesses,” said John McCann, Mayor of Chula Vista. “Their ongoing investments in modern, high-speed connectivity are important for our community, helping students stay connected, expanding telehealth access, and supporting small businesses.”

  • In the Greater Los Angeles Region, we invested $4.1 billion in our wireless and fiber network, including Long Beach, Anaheim and Los Angeles. We also ramped up coverage and capacity in high traffic areas, like airports, stadiums and venues, including SoFi Stadium, Los Angeles Convention Center, Dodger Stadium, Los Angeles International Airport (LAX) and John Wayne Airport in Santa Ana.

“These investments are vital for our community, they help students stay connected, expand telehealth access, and support business and residential growth. AT&T’s investments are helping create thriving communities,” said Maria S. Salinas, president and CEO, Los Angeles Area Chamber of Commerce.

July 2024

  • Along the North Coast, we’ve expanded coverage and capacity with new cell sites, including one in Forestville giving residents, businesses and visitors improved connectivity in the community of Forestville and along Highway 116 to Guerneville.
  • In the Central Coast region, including Monterey, Salinas and Watsonville, we’ve expanded coverage and capacity with new cell sites, including one in Morro Bay giving residents, businesses and visitors increased coverage and capacity to the community around Chorro Creek and Blue Heron Terrace.

“As we work to attract new businesses and economic opportunities to our area, this kind of investment makes our communities more attractive to employers. I applaud AT&T for their continuing investments,” said Kimbley Craig, President & CEO of Monterey County Business Council.

  • In the Central Valley, new cell sites have increased coverage and capacity including one in Tulare giving residents, businesses and visitors increased coverage and capacity to the community of Terra Bella and residential communities East of Highway 65.

Fiber Expansion

September 2025

To help meet the demands for reliable, high-speed connections today – and in the future – we’re investing in our fiber network. With more than 11 million fiber miles in California, AT&T Fiber® is now available to more than 3.35 million customer locations in rural communities and urban areas.

  • So far in 2025, across the Central Valley, including in San Joaquin, Stanislaus, Merced, Madera, Tulare, Fresno, Kings and Kern counties, we’ve expanded access to AT&T Fiber by more than 10,000 customer locations.
  • Across the North Coast, including Mendocino, Sonoma and Marin counties, we’ve expanded access to AT&T Fiber by nearly 2,000 customer locations.

“Broadband expansion isn’t just connectivity; it’s an investment in our community’s future,” said Eric Lucan, Marin County Supervisor. “And in Marin, expanded fiber networks help close the digital divide and expand opportunities for families.”

  • In the Sacramento Valley, including in Nevada, El Dorado, Butte, Colusa, Glenn, Yolo, Sutter, Yuba, Tehama and Shasta counties, we’ve expanded access to AT&T Fiber by adding more than 12,000 customer locations.
  • In San Diego County, including Chula Vista and Oceanside, we’ve expanded access to AT&T Fiber by adding more than 18,000 customer locations.
  • Spanning across the Central Coast, including Monterey, Hollister and Watsonville, we’ve grown access to AT&T Fiber by adding more than 2,000 customer locations.
  • So far in 2025, across the Bay Area, including San Francisco and San Mateo, we’ve grown access to AT&T Fiber by more than 13,000 customer locations.
  • Across the Greater Los Angeles Region, including Los Angeles, Orange, Riverside, San Bernardino, Santa Barbara and Ventura Counties, we’ve expanded access to AT&T Fiber by more than 40,000 customer locations.

October 17, 2024

  • AT&T Fiber, America’s fastest internet with the most reliable speeds,1is now available to more than 10,000 new residential and business locations in Santa Clara, San Mateo, Contra Costa and Alameda Counties. These new locations are in addition to the more than 950,000 customer locations across these four Bay Area counties that currently have access to AT&T Fiber.

April 18, 2024

  • In rural Mendocino County, AT&T Fiber is available to more than 270 customer locations in Comptche, serving residential and small businesses in the area, providing the rural community with the modern, high-speed network infrastructure necessary in today’s economy. Read more.

January 25, 2024

  • We announced that AT&T Fiber is now available to more than 16,000 residential and business locations in Mountain View. The newly launched network will give customers access to super-fast internet speeds up to 5-Gigs.1Read more.

November 13, 2023

  • In San Francisco, we deployed AT&T Fiber to Japan Center Malls, including East, West and Kinokuniya Buildings in Japantown.

“The Japantown Merchants Association is thrilled to join with AT&T on this significant upgrade to our infrastructure,” said Richard Hashimoto, President, Japantown Merchants Association. “For years we have had unreliable and unstable internet service. The addition of AT&T Business Fiber will provide fast and dependable connections for our small businesses.” 

Public-Private Projects

December 18, 2024 

  • AT&T was selected to expand AT&T Fiber to more than 150 residential and business locations in parts of rural San Diego County as part of a $4.2 million public-private partnership to deliver high-speed internet and help close the digital divide. County officials used federal funds, made available by the American Rescue Plan Act of 2021 to bring fiber internet to unserved portions of unincorporated communities in San Dieguito and Ramona.

August 29, 2023

  • The San Pasqual Band of Mission Indians and AT&T held a groundbreaking ceremony  on deployment of AT&T Fiber that will bring high-speed internet to 500 residential and small business locations on their Tribal land.

“Delivering reliable, high-speed internet service to our Tribal community is very important for us,” said Chairman Stephen Cope of the San Pasqual Tribe. “We are excited to work with AT&T to bring broadband connectivity and help bridge the digital divide on our Tribal lands.”

March 9, 2022

  • The Rincon Band of Luiseño Indians announced plans to work with AT&T to build broadband service to more than 400 homes on Rincon tribal lands. The plans call for AT&T to build a state-of-the-art fiber network that will help improve the community’s access to medical care, enhance educational opportunities, and support communication with friends and family.

“Delivering reliable high-speed internet service to our tribal community is a top priority for us,” said Chairman Bo Mazzetti of the Rincon Tribe. “We are excited to work with AT&T to help bridge the digital divide on our tribal lands.”

 Based on wired connection to gateway.

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