How Did They Build That? is a U.S. television program broadcast on Smithsonian Channel since Sunday, January 3, 2021. How Did They Build That? is watched by a total number of 54,000 people (0.02% rating, up +108% from last week) as of the daily audience measurement on .
Demographic breakdown of the most recent historical ratings of How Did They Build That? on Smithsonian Channel as of Sunday, September 21, 2025.
| How Did They Build That? Daily Ratings | |||
|---|---|---|---|
| Date | Demo | Audience | Rating |
| 2025-Sep-21 408: FACELIFTS & SCAFFOLDS | P2+ | 54,000 | 0.02 |
| P18-49 | 18,000 | 0.01 | |
| P25-54 | 19,000 | 0.02 | |
| 2025-Sep-14 407: SUMMIT & SUBMERGE | P2+ | 26,000 | 0.01 |
| P18-49 | 5,000 | 0.00 | |
| P25-54 | 5,000 | 0.00 | |
| 2025-Aug-24 405: ECOBUILDS & EARTHQUAKES | P2+ | 85,000 | 0.03 |
| P18-49 | 10,000 | 0.01 | |
| P25-54 | 25,000 | 0.02 | |
| 2025-Aug-17 404: HIGH WATERS & HARSH WINDS | P2+ | 74,000 | 0.02 |
| P18-49 | 20,000 | 0.01 | |
| P25-54 | 22,000 | 0.02 | |
| 2025-Jul-27 | HH | 63,000 | 0.05 |
| P2+ | 89,000 | 0.03 | |
| P18-49 | 26,500 | 0.02 | |
| P25-54 | 25,000 | 0.02 | |
| 2022-Aug-14 | P2+ | 129,000 | 0.04 |
| P18-49 | 26,100 | 0.02 | |
| 2022-Jul-24 | P2+ | 131,000 | 0.04 |
| P18-49 | 26,100 | 0.02 | |
| 2022-Jul-17 | P2+ | 122,000 | 0.04 |
| P18-49 | 26,100 | 0.02 | |
| 2022-Jul-10 | P2+ | 178,000 | 0.06 |
| P18-49 | 26,100 | 0.02 | |
| Rank | Program | Audience | Change |
|---|---|---|---|
| 1 | Aerial America | 84,000 | |
| 2 | WWII Battles in Color | 69,000 |