Is Quantum Fiber available in my area?
Quantum Fiber is a regional network, not a national one. The honest answer for any given home is that it depends on the street, because fiber networks were built out block by block. The tables below are the closest thing to a straight answer that public federal data allows: every state and metro where Quantum Fiber has reported service, and how much of each it covers.
Quantum Fiber coverage by state
Coverage is the share of residential locations in each state where Quantum Fiber reports it can serve. A low percentage does not mean a bad network. It usually means a network concentrated in a few towns.
| State | Share of homes covered |
|---|---|
| Colorado | 85.2% |
| Utah | 74.7% |
| Arizona | 71.2% |
| New Mexico | 67.5% |
| Minnesota | 64.2% |
| Wyoming | 63.7% |
| Montana | 60.5% |
| Idaho | 58.2% |
| Oregon | 55.7% |
| Iowa | 54.4% |
| Nevada | 53.0% |
| Washington | 50.2% |
| South Dakota | 47.0% |
| Nebraska | 46.0% |
| North Dakota | 40.0% |
| Florida | 18.2% |
| Wisconsin | 2.0% |
| Louisiana | 0.0% |
Metro areas Quantum Fiber serves
Ranked by how much of the metro is covered, not by metro size. The top of this list is where Quantum Fiber is a realistic option for most homes.
| Metro area | Share of homes covered |
|---|---|
| Los Alamos, NM Micro Area | 94.8% |
| Denver-Aurora-Lakewood, CO Metro Area | 92.2% |
| Salt Lake City, UT Metro Area | 88.8% |
| Colorado Springs, CO Metro Area | 88.5% |
| Boulder, CO Metro Area | 88.1% |
| Rock Springs, WY Micro Area | 87.3% |
| Cape Coral-Fort Myers, FL Metro Area | 87.3% |
| St. George, UT Metro Area | 85.3% |
| Grand Junction, CO Metro Area | 85.3% |
| Kalispell, MT Micro Area | 84.7% |
| Naples-Marco Island, FL Metro Area | 84.0% |
| Pueblo, CO Metro Area | 84.0% |
| Sebring-Avon Park, FL Metro Area | 83.8% |
| Santa Fe, NM Metro Area | 83.6% |
| Boise City, ID Metro Area | 83.5% |
| Edwards, CO Micro Area | 83.5% |
| Las Cruces, NM Metro Area | 83.1% |
| Hood River, OR Micro Area | 82.7% |
| Albuquerque, NM Metro Area | 82.5% |
| Medford, OR Metro Area | 82.2% |
| Cheyenne, WY Metro Area | 82.0% |
| Bremerton-Silverdale-Port Orchard, WA Metro Area | 81.9% |
| Nogales, AZ Micro Area | 81.5% |
| Walla Walla, WA Metro Area | 80.9% |
| Des Moines-West Des Moines, IA Metro Area | 80.9% |
Showing the 25 best-covered of 212 metro areas with reported Quantum Fiber service.
What technology does Quantum Fiber use?
Lumen Technologies, Inc. reports more than one technology to the FCC, so not every address in its footprint gets the same product:
| Technology | Residential locations reported |
|---|---|
| DSL / Copper | 9,916,420 |
| Fiber | 3,157,734 |
An honest limitation. The FCC publishes each provider's technology mix nationally, but not per city. So we can tell you Quantum Fiber operates fiber somewhere in a given state and we cannot tell you from this data that your particular street gets fiber rather than one of the others. Check with the provider before signing anything.
Common questions
Is Quantum Fiber available at my address?
Only an address check answers that. Use the state and metro tables above to find out whether Quantum Fiber operates in your area at all. If your state is not listed, it does not. If it is, coverage within that state is uneven and street-level.
Who owns Quantum Fiber?
Quantum Fiber files with the FCC under the holding company name Lumen Technologies, Inc.. This is common, because the name on the bill and the name on the federal filing are frequently different.
How current is this data?
It comes from the FCC Broadband Data Collection, filing period D25, published July 21, 2026. The FCC refreshes it roughly twice a year, and there is a publication lag of several months. We update these pages when new data is released.
Does WhereFiber earn money if I sign up?
Sometimes. Where a provider runs an affiliate program we may earn a commission, at no extra cost to you. It does not affect which providers appear here, which is decided by FCC data alone. Full detail in our affiliate disclosure.
Check Quantum Fiber at your address
Check your address to see whether Quantum Fiber reports service at your exact location, along with every other provider that does. It takes one field and no phone number.