AT&T vs Cox in San Diego

San Diego shoppers trade AT&T’s cheaper, faster fiber where available against Cox’s broader access to its 2,000/100 Mbps cable tier.

The 30-Second VerdictUpdated September 21, 2026

Cox is the better overall pick for San Diego because its 2,000/100 Mbps cable plan reaches about 56% of the city, while its $50 starting price and 91 speed score support a strong all-around showing. AT&T wins raw speed and price, with 5,000/5,000 Mbps fiber where available, a 95 speed score, and a $35 starting price. AT&T also reaches more addresses overall at about 96%, while Cox is the better choice when its faster cable tier is available at your home. Choose AT&T for fiber performance and value; choose Cox for a balanced connection where coverage is the deciding factor.

By Austin Shrum and Ali Yazdi, co-founders. Both spent years selling internet plans online before building this site. Every figure above comes from FCC Broadband Data Collection filings and monthly price checks; here is how we rank providers.

At a glance

AT&T vs. Cox, side by side.

Provider	Type	Top speed	City coverage	Starting price	Best for
AT&T	Fiber	5 Gig 5 Gig upload	96%	$35/mo	Top fiber speeds
Cox	Cable	2 Gig 100 Mbps upload	59%	$50/mo	Solid cable option

Coverage map

Two different questions, two views. Top speed shows who offers the faster plan where you can actually get it. Coverage shows who reaches more of each ZIP. Or pick a single provider to see just its footprint.

View

Showing the provider with the faster available plan in each ZIP. Click any ZIP for the breakdown.

Neighborhood breakdown

The choice can shift by neighborhood and even block to block in San Diego. AT&T reaches about 96% of the city overall, but its 5,000/5,000 Mbps fiber tier reaches about 45%; Cox’s 2,000/100 Mbps cable tier reaches about 56%, so check your exact address before choosing.

ZIP	Neighborhoods	Coverage		Top speed		Rank score		Winner
ZIP	Neighborhoods	AT&T	Cox	AT&T	Cox	AT&T	Cox	Winner
92109	Pacific Beach, Mission Beach, Crown Point	74%	0%	5 Gig	—	71	—	AT&T
92104	North Park, University Heights, Normal Heights	90%	99%	5 Gig	2 Gig	85	70	AT&T
92107	Ocean Beach, Point Loma Heights, Sunset Cliffs	94%	99%	5 Gig	2 Gig	89	70	AT&T
92154	Otay Mesa, Ocean View Hills, Nestor, San Ysidro	17%	89%	5 Gig	2 Gig	16	63	Cox
92101	Downtown, Gaslamp Quarter, Little Italy, East Village	41%	88%	5 Gig	2 Gig	39	62	Cox
92105	City Heights, Fairmount Park, Rolando Park	62%	98%	5 Gig	2 Gig	58	69	Cox
92110	Old Town, Bay Park, Morena, Midway District	42%	36%	5 Gig	2 Gig	40	25	AT&T
92103	Hillcrest, Mission Hills, Bankers Hill, University Heights	79%	97%	5 Gig	2 Gig	75	68	AT&T
92114	Encanto, Lincoln Park, Skyline, Broadway Heights	56%	100%	5 Gig	2 Gig	53	70	Cox
92115	College Area, Rolando, El Cerrito	57%	97%	5 Gig	2 Gig	54	69	Cox
92102	Golden Hill, Sherman Heights, Stockton, Mount Hope	81%	98%	5 Gig	2 Gig	77	69	AT&T
92117	Clairemont, Bay Ho, North Clairemont	79%	0%	5 Gig	—	75	—	AT&T
92113	Logan Heights, Barrio Logan, Southcrest, Shelltown	72%	92%	5 Gig	2 Gig	68	65	AT&T
92106	Point Loma, Roseville, La Playa, Loma Portal	72%	98%	5 Gig	2 Gig	68	69	Cox
92116	Normal Heights, Kensington, Talmadge	92%	98%	5 Gig	2 Gig	87	69	AT&T
92126	Mira Mesa, Sorrento Mesa	21%	6%	5 Gig	1 Gig	20	4	AT&T
92127	Rancho Bernardo, 4S Ranch, Del Sur, Santaluz	42%	70%	5 Gig	2 Gig	40	49	Cox
92111	Clairemont, Linda Vista, Kearny Mesa	61%	0%	5 Gig	—	58	—	AT&T
92108	Mission Valley, Fashion Valley, Grantville	54%	30%	5 Gig	2 Gig	51	21	AT&T
92130	Carmel Valley, Del Mar Heights, Torrey Hills	46%	0%	5 Gig	2 Gig	43	0	AT&T
92120	Del Cerro, Allied Gardens, Grantville	49%	95%	5 Gig	2 Gig	46	67	Cox
92129	Rancho Peñasquitos, Torrey Highlands	8%	1%	5 Gig	2 Gig	7	1	AT&T
92128	Rancho Bernardo, Carmel Mountain Ranch, Sabre Springs	5%	3%	5 Gig	2 Gig	4	2	AT&T
92119	San Carlos, Lake Murray	54%	100%	5 Gig	2 Gig	51	71	Cox
92123	Serra Mesa, Mission Village, Kearny Mesa	56%	1%	5 Gig	2 Gig	53	1	AT&T
92139	Paradise Hills, Bay Terraces	42%	98%	5 Gig	2 Gig	40	69	Cox
92131	Scripps Ranch, Scripps Miramar Ranch	14%	14%	5 Gig	2 Gig	13	10	AT&T
92122	University City, La Jolla Colony, Nobel	25%	0%	5 Gig	—	24	—	AT&T
92121	Sorrento Valley, Torrey Pines, Sorrento Mesa	26%	0%	5 Gig	—	25	—	AT&T
92124	Tierrasanta, Murphy Canyon	7%	5%	5 Gig	2 Gig	7	4	AT&T
92166	Point Loma, La Playa, Roseville	53%	98%	5 Gig	2 Gig	51	69	Cox
92175	Rolando, College Area	80%	97%	5 Gig	2 Gig	76	68	AT&T
92159	Del Cerro, Grantville	75%	100%	5 Gig	2 Gig	71	71	Cox
92177	Clairemont, Bay Ho	64%	0%	5 Gig	—	60	—	AT&T
92147	Naval Training Center, Point Loma	56%	96%	5 Gig	2 Gig	53	68	Cox

Rank score (0–100) is each provider’s Speed Score, discounted for weak upload, times the share of that ZIP it reaches — the same rule that orders providers on the San Diego city page, so it moves as availability changes street to street.

Which is better for…

The right pick comes down to what you actually do online.

Gaming

AT&T

AT&T’s 5,000/5,000 Mbps fiber tier offers much more upload capacity than Cox’s 2,000/100 Mbps cable tier where available. That stronger upload performance is useful for multiplayer gaming, updates, and gaming while others use the connection.

Streaming

AT&T

AT&T wins where its 5,000/5,000 Mbps fiber tier reaches your address, giving a larger speed cushion for multiple 4K streams. Cox’s 2,000/100 Mbps plan is still a strong streaming option where available.

Video calls

AT&T

AT&T offers 5,000 Mbps upload on its 5,000/5,000 Mbps fiber tier, compared with Cox’s 100 Mbps upload on its 2,000/100 Mbps cable tier. Choose AT&T where available if several people may be on calls or uploading at once.

Just the basics

AT&T

AT&T starts at $35 per month, less than Cox’s $50 starting price, and its overall reach is about 96% of the city. For browsing, email, and occasional streaming, choose AT&T where its service is available and confirm the tier at your address.

Get connected

Pick your provider and check availability at your address.

Check plans

Top speed5 Gig

Upload5 Gig

Coverage96%

From$35/mo

5 Gig down · 5 Gig up Fiber
1 Gig down · 1 Gig up Fiber
100 Mbps down · 20 Mbps up Copper

Check plans

Top speed2 Gig

Upload100 Mbps

Coverage59%

From$50/mo

2 Gig down · 100 Mbps up Cable

See what’s actually available at your address

Coverage changes from one street to the next. Check your exact address in seconds.

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Frequently asked questions

Is AT&T or Cox internet available at my San Diego address?

AT&T reaches about 96% of San Diego overall, while Cox reaches about 59%. Availability varies by block, so check your exact address and confirm which tier is offered before ordering.

Which is cheaper, AT&T or Cox, and what will I actually pay?

AT&T starts at $35 per month, compared with Cox at $50 per month. These are promotional starting rates; confirm the post-promo rate, equipment fees, and any contract before signing.

Which is faster for gaming, working from home, or 4K streaming?

AT&T is faster where available, offering up to 5,000/5,000 Mbps versus Cox’s up to 2,000/100 Mbps. Check your address for the actual tier, especially if upload performance matters for gaming or working from home.

How we compare. Coverage is the share of a ZIP where a provider offers a genuinely good plan (≥ 1 Gbps download, ≥ 20 Mbps upload, non-satellite), from FCC Broadband Map serviceability data. “Fastest available” ranks the providers present in a ZIP by top advertised download speed. Pricing reflects current promotional starting rates. Provider order and each ZIP’s winner follow the site’s one ranking rule (Speed Score, discounted for weak upload, times coverage); read the full methodology.