Best Internet Providers in San Marcos, CA

1. Spectrum 2 Gbps Internet

Spectrum

Speed:
Typical download speed: 2269 Mbps
Typical upload speed: 1049 Mbps
Typical latency: 22 ms

Prices Starting At

$70.00/mo

Reg $120/mo

One-time Fees:
Installation Fee: $65 (professional install), $35 (self-install)
Late Payment Fee: Up to $8.95
Early Termination Fee: $0.00

💰 Get Deal!

Get 1 month free - bundle to receive up to 4 months free!

2. Spectrum 100 Mbps Internet

Spectrum

Internet Advantage

Speed:
Typical download speed: 113 Mbps
Typical upload speed: 104 Mbps
Typical latency: 22 ms

Prices Starting At

$30.00/mo

Reg $50/mo

One-time Fees:
Installation Fee: $65 (professional install), $35 (self-install)
Late Payment Fee: Up to $8.95
Early Termination Fee: $0.00

💰 Get Deal!

Get 1 month free - bundle to receive up to 4 months free!

3. Spectrum 500 Mbps Internet

Spectrum

Internet Premier

Speed:
Typical download speed: 572 Mbps
Typical upload speed: 525 Mbps
Typical latency: 22 ms

Prices Starting At

$40.00/mo

Reg $80/mo

One-time Fees:
Installation Fee: $65 (professional install), $35 (self-install)
Late Payment Fee: Up to $8.95
Early Termination Fee: $0.00

💰 Get Deal!

Get 1 month free - bundle to receive up to 4 months free!

4. Spectrum 1 Gbps Internet

Spectrum

Internet Gig

Speed:
Typical download speed: 1041 Mbps
Typical upload speed: 1010 Mbps
Typical latency: 22 ms

Prices Starting At

$50.00/mo

Reg $100/mo

One-time Fees:
Installation Fee: $65 (professional install), $35 (self-install)
Late Payment Fee: Up to $8.95
Early Termination Fee: $0.00

💰 Get Deal!

Get 1 month free - bundle to receive up to 4 months free!

5. Cox Communication 100 Mbps Internet

Cox Communication

100 Mbps ConnectAssist

Speed:
Typical download speed: 117 Mbps
Typical upload speed: 24 Mbps
Typical latency: 15 ms

Prices Starting At

$50.00/mo

Reg $30 per month

One-time Fees:
Installation Fee: $100 (Professional Installation)
Late Payment Fee: $4.75
Early Termination Fee: $0.00
Equipment Fee: $15.00
Non-return Equipment Fee: $50 (Deposit)

Get 100 Mbps Internet starting only $30/mo.

6. Cox Communication 300 Mbps Internet

Cox Communication

300 Mbps internet

Speed:
Typical download speed: 353 Mbps
Typical upload speed: 34 Mbps
Typical latency: 12 ms

Prices Starting At

$50.00/mo

Reg $70/mo

One-time Fees:
Installation Fee: $100 (Professional Installation)
Late Payment Fee: $4.75
Early Termination Fee: $0.00
Equipment Fee: $50 (Deposit)

Get 300 Mbps Internet starting only $50/mo.

7. Cox Communication 2 Gbps Internet

Cox Communication

2 Gig Internet

Speed:
Typical download speed: 2296 Mbps
Typical upload speed: 113 Mbps
Typical latency: 12 ms

Prices Starting At

$140.00/mo

Reg $150/mo

One-time Fees:
Installation Fee: $100 (Professional Installation)
Late Payment Fee: $4.75
Early Termination Fee: $0.00
Equipment Fee: $15.00
Non-return Equipment Fee: $50 (Deposit)

See if you qualify for FREE Cox Internet, saving up to $30/mo.

8. Cox Communication 500 Mbps Internet

Cox Communication

500 Mbps Internet

Speed:
Typical download speed: 588 Mbps
Typical upload speed: 57 Mbps
Typical latency: 13 ms

Prices Starting At

$70.00/mo

Reg $90/mo

One-time Fees:
Installation Fee: $100 (Professional Installation)
Late Payment Fee: $4.75
Early Termination Fee: $0.00
Equipment Fee: $15.00
Non-return Equipment Fee: $50 (Deposit)

Get 500 Mbps Internet starting only $80/mo.

9. Cox Communication 1 Gbps Internet

Cox Communication

Gigablast

Speed:
Typical download speed: 1175 Mbps
Typical upload speed: 113 Mbps
Typical latency: 12 ms

Prices Starting At

$90.00/mo

Reg $120/mo

One-time Fees:
Installation Fee: $100 (Professional Installation)
Late Payment Fee: $4.75
Early Termination Fee: $0.00
Equipment Fee: $15.00
Non-return Equipment Fee: $50 (Deposit)

See if you qualify for FREE Cox Internet, saving up to $30/mo.

San Marcos Business Internet Providers

San Marcos Internet provider frequently asked questions

How many internet companies provide service in San Marcos, CA?

As of October, 2025 there are 8 company that offer high speed internet service in San Marcos, CA.

Which company offers the best internet service in San Marcos, CA?

AT&T is the best internet company in San Marcos, CA that offers download speeds up to 50 Mbps and available to 99.5% homes.

Who has the fastest internet service in San Marcos, CA?

AT&T Fiber internet service offers the fastest 1000 Mbps download speed in San Marcos, CA.

Which provider has the cheapest Internet in San Marcos, CA?

The cheapest internet option in San Marcos is $30 per month. Charter Communications offers 100Mbps Cable Internet for as low as $30 per month.

Does San Marcos, California have fiber Internet?

Fiber-optic internet is available to 14% population in San Marcos, CA. AT&T is the only provider that offers fiber internet in San Marcos with download speeds up to 1000 Mbps.