The FCC's New Broadband Maps Are Here — And They Show How Bad the Old Ones Were

For over a decade, the FCC's broadband maps have been a running joke among anyone who actually works in telecommunications policy. The agency's Form 477 data — the basis for its coverage maps — used a methodology so absurd that it would be funny if billions of dollars in funding decisions didn't depend on it.

Here's how the old system worked: if a single ISP reported that it could serve at least one location in a census block, the entire census block was marked as "served." A census block in rural Montana might cover 50 square miles. One house near the highway has DSL. The FCC counted every address in that block — farms, ranches, cabins miles from any infrastructure — as having broadband access.

The new Broadband Data Collection (BDC) system, which the FCC began publishing in pre-production form this month, finally fixes this. And the picture it paints is significantly worse than the old maps suggested.

What Changed

The BDC represents a fundamental overhaul of how the FCC collects and presents broadband availability data:

Location-level granularity. Instead of census blocks, the new system maps broadband availability to individual locations — specific addresses and buildings. The FCC worked with CostQuest Associates to build a "Broadband Serviceable Location Fabric" that identifies every structure in the United States that could potentially receive broadband service. The fabric contains roughly 115 million locations.

ISP-reported, location-specific data. Providers must now report which specific locations they can serve, not just which census blocks they operate in. They must also report the technology used (fiber, cable, DSL, fixed wireless, satellite) and the maximum speeds available at each location.

A challenge process. For the first time, consumers, local governments, and other stakeholders can formally challenge the accuracy of provider-reported data. If Comcast says it can serve your address at 100 Mbps and you know that's wrong, you can file a challenge and the FCC will investigate.

Speed verification. The FCC is developing a speed test component that will allow consumers to submit actual performance data that can be compared against provider claims.

What the New Maps Show

The pre-production maps are still being refined — the challenge process hasn't fully run yet — but the early data reveals significant discrepancies with the old Form 477 numbers.

The old maps claimed that approximately 14.5 million Americans lacked access to broadband (defined as 25/3 Mbps). Independent analyses from organizations like BroadbandNow, Microsoft, and the GAO have long argued the real number was 42 million or higher. The new BDC data, while not yet finalized, appears to confirm what critics have said for years: the actual number of unserved Americans is substantially higher than the FCC previously reported.

Several states that appeared well-connected under the old methodology show major coverage gaps in the new data:

• Rural areas in the South and Appalachia show dramatic drops in reported coverage, particularly for areas previously marked as "served" by DSL providers whose actual deployments are far more limited than Form 477 suggested
• Tribal lands show even worse coverage than previously reported — and the old numbers were already dismal
• Suburban fringe areas — the edges of metro regions where cable plant ends and nothing else begins — are revealed as significantly more underserved than census-block data implied

Why This Matters Enormously Right Now

The timing of these new maps is not coincidental. The Infrastructure Investment and Jobs Act, signed in November 2021, allocated $42.45 billion through the BEAD program for broadband deployment. That money will be distributed to states based on the number of unserved and underserved locations they contain — as determined by the FCC's broadband maps.

If the maps are wrong, the money goes to the wrong places.

Under the old Form 477 system, a state might appear to have 100,000 unserved locations. Under the new BDC methodology, that number might jump to 300,000 or 500,000. The stakes for accurate mapping are quite literally billions of dollars.

This is why the challenge process matters so much. ISPs have a financial incentive to overstate their coverage — it reduces the "unserved" count in their territory, which reduces the likelihood that BEAD money will fund a competitor building fiber in their market. Every bogus coverage claim that goes unchallenged means an unserved household that stays unserved.

The Challenge Process

Starting this spring, the FCC will open a formal challenge window. Here's how it works:

1. Check the map at the FCC's BDC portal to see what providers and speeds are listed at your address
2. If the data is wrong — either because a listed provider doesn't actually serve your address, or the listed speed is inaccurate — you can file a challenge
3. The ISP must respond to the challenge with evidence that it can actually provide the claimed service
4. The FCC adjudicates and updates the map accordingly

State broadband offices, local governments, and nonprofit organizations can also file bulk challenges on behalf of communities. Several states, including Virginia, Georgia, and Minnesota, have already announced plans to conduct systematic verification of provider claims in their states.

I cannot overstate how important public participation in this process will be. The FCC built the infrastructure for accurate maps. Now it needs real people to verify the data. If you live in an area where the broadband options on the FCC's map don't match reality — which is likely if you're in a rural or semi-rural area — please file a challenge when the window opens.

What's Still Missing

The new maps are a massive improvement, but they're not perfect:

Speed claims are still self-reported by ISPs. A provider can claim it offers 100 Mbps at your address even if actual speeds are consistently 40 Mbps. The speed test component should help address this, but it's not fully operational yet.

"Can serve" vs. "does serve." The maps show where providers can offer service, not where they actually have customers. An ISP might claim it can serve a location if the customer pays $5,000 for a special construction fee to extend a line. Technically available, practically unavailable.

Technology categories are broad. The maps distinguish between fiber, cable, DSL, and fixed wireless, but don't capture the enormous quality differences within categories. A 10 Mbps DSL connection and a 100 Mbps VDSL2 connection are both listed as "DSL."

Despite these limitations, the BDC is the most significant improvement to US broadband data collection in the FCC's history. The old system was broken beyond repair. The new system is imperfect but fixable — especially if consumers and local governments actively participate in the challenge process.

After years of making policy decisions based on fantasy data, we're finally getting a clearer picture of American broadband. What we're seeing isn't pretty, but at least it's closer to the truth.