MLab Internet Speed Test
3 Sep 2025

MLab Internet Speed Test

This layer displays the median download speed for a county as measured by the M-Lab speed test, available at speed.measurementlab.net . Data was aggregated from January-June, 2020. Data was accessed via the National Telecommunications and Information Administration (NTIA).

Digital Divide Index
3 Sep 2025

Digital Divide Index

The Digital Divide Index or DDI ranges in value from 0 to 100, where 100 indicates the highest digital divide. It is composed of two scores, also ranging from 0 to 100: the infrastructure/adoption (INFA) score and

Ookla Internet Speed Test
3 Sep 2025

Ookla Internet Speed Test

This layer displays the median download speed for a county or tract as measured by the Ookla speed test, available at speedtest.net . Data was aggregated from January-June, 2020. Data was accessed via the National Telecommunications and Information Administration (NTIA).

Heat Index – Average Days Above 99th Percentile
3 Sep 2025

Heat Index – Average Days Above 99th Percentile

This updated dataset reports the total number of days in which an extreme heat event was above the 99th percentile between 2017-2019 at the county level. Data were obtained from the Centers for Disease Control and Prevention (CDC) Environmental Public … Continued