Very shortly, the maps will be searchable by road segment in larger census blocks.

We then sum the population for each census block within the footprint to determine the availability.

For instance, census block 2 includes any block numbered 2000 to 2999.

The census block is narrower, taking in several hundred households.

Critics charge that sampling could worsen estimates for small areas, like 50-household census blocks.

Speed test points are drawn at the center of the census block where the speed test was taken.

If a different set of 5,000 census blocks had been randomly selected, the results would have been different.

For example, census block 3019 would be in block group 3.

The population of a census block varies greatly.

"But we showed them block by census block that income and population were there in the neighborhood."