In Union City there are 3 residential DSL providers covering 84.27% of the city. The average home can get speeds up to 115 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all DSL internet providers in Union City, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Union City, CA please click below.
Union City, CA Availability Maps
DSL Internet Service Providers in Union City
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in Union City are not shown.
Union City Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in Union City is DSL internet available?
DSL Internet Availability Key
DSL is available in 84.27% of Union City. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Union City above to see who has service at your home.
How fast is DSL internet in Union City?
The map below shows maximum DSL internet speeds by area in Union City.
DSL Internet Speed Key
The average Union City home can get up to 115 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 1,000 Mbps, which 2.13% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 1.25% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Union City.
DSL internet speeds tend to be faster in the east parts of Union City, and slower in the north areas of the city.
Is DSL the fastest internet I can get in Union City?
The fastest internet for you may vary based on where in Union City you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for 31.87% of Union City homes.
- Cable is fastest for 67.67% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Union City homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Union City, along with details on where in Union City and at what speeds.
AT&T DSL in Union City, CA
AT&T DSL coverage
About 84.27%, or 61,314 people, have AT&T DSL internet available to them in the city. The company covers the entire Union City area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of Union City.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Union City. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Union City. The fastest plan anyone in Union City can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Union City customers is up to 86 Mbps.
Show all download speeds
- 68.3% up to 100.0 Mbps
- 13.9% up to 75.0 Mbps
- 11.7% up to 50.0 Mbps
- 2.0% up to 25.0 Mbps
- 4.0% up to 10.0 Mbps
AT&T DSL upload speeds
In Union City download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the slowest compared to other Union City DSL providers. AT&T offers 4 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Union City is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 18 Mbps.
Show all upload speeds
- 82.3% up to 20.0 Mbps
- 11.7% up to 10.0 Mbps
- 2.0% up to 5.0 Mbps
- 4.0% up to 1.0 Mbps
EarthLink DSL in Union City, CA
EarthLink DSL coverage
About 84.27%, or 61,314 people, have EarthLink DSL internet available to them in the city. The company covers the entire Union City area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Union City.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Union City. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Union City. The fastest plan anyone in Union City can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Union City customers is up to 86 Mbps.
Show all download speeds
- 68.3% up to 100.0 Mbps
- 13.9% up to 75.0 Mbps
- 11.7% up to 50.0 Mbps
- 2.0% up to 25.0 Mbps
- 4.0% up to 10.0 Mbps
EarthLink DSL upload speeds
In Union City download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the slowest compared to other Union City DSL providers. EarthLink offers 4 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Union City is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 18 Mbps.
Show all upload speeds
- 82.3% up to 20.0 Mbps
- 11.7% up to 10.0 Mbps
- 2.0% up to 5.0 Mbps
- 4.0% up to 1.0 Mbps
Sail Internet DSL in Union City, CA
Sail Internet DSL coverage
About 5.47%, or 3,979 people, have Sail Internet DSL internet available to them in the city. The company covers the southeast, east, and northeast Union City area. Sail Internet is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Union City.
Sail Internet DSL download speeds
Sail Internet is below average when comparing download speeds to all other internet providers in Union City. Versus other DSL providers in the area, Sail Internet DSL is the fastest. There are 2 different maximum speeds throughout Union City. The fastest plan anyone in Union City can order from Sail Internet goes up to 1,000 Mbps, the slowest package only goes up to 200 Mbps, and the city-wide average maximum speed for Union City customers is up to 511 Mbps.
Show all download speeds
- 38.9% up to 1,000.0 Mbps
- 61.1% up to 200.0 Mbps
Sail Internet DSL upload speeds
In Union City download speeds tend to be faster than than upload speeds for Sail Internet DSL. Compared to other ISPs, Sail Internet is below average where upload speeds are concerned, and the fastest compared to other Union City DSL providers. Sail Internet offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Union City is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Sail Internet customers can get speeds up to 450 Mbps.
Show all upload speeds
- 38.9% up to 1,000.0 Mbps
- 61.1% up to 100.0 Mbps
Union City DSL by Area
This information is most helpful to those looking for homes or considering moving to Union City or any of the areas nearby.
How does DSL internet in Union City compare to the rest of California?
DSL internet speeds in Union City are much faster versus the average speeds in California: 0.00 Mbps in California versus 115 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 84.27% in Union City.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Union City are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL internet look like in other cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- Newark, CA: less DSL coverage, slower speeds
- Hayward, CA: less DSL coverage, slower speeds
- Fremont, CA: more DSL coverage, faster speeds
- Fairview, CA: more DSL coverage, slower speeds
- Cherryland, CA: more DSL coverage, slower speeds
- San Lorenzo, CA: less DSL coverage, slower speeds
- Sunol, CA: more DSL coverage, slower speeds
- Ashland, CA: more DSL coverage, slower speeds
- East Palo Alto, CA: more DSL coverage, slower speeds
- Pleasanton, CA: more DSL coverage, slower speeds
Cities with Similar Populations
- Zemple, MN: less DSL coverage, slower speeds
- Woodlawn, TX: less DSL coverage, slower speeds
- Wyoming, MI: more DSL coverage, slower speeds
- Woodmere, OH: more DSL coverage, slower speeds
- Woodrow, AR: more DSL coverage, slower speeds
- Woodrow, CO: more DSL coverage, slower speeds
- Zevely, WV: less DSL coverage, slower speeds
- Woods Bay, MT: more DSL coverage, slower speeds
- Zenith, WV: more DSL coverage, slower speeds
- Zell, MO: less DSL coverage, slower speeds