| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Claude | 1 | 1,186 | 1,188 | -0.34% | 691 | 2 | City |
| Timbercreek Canyon | 2 | 485 | 433 | 1.89% | 254 | 2 | Village |
| Howardwick | 3 | 370 | 366 | 0% | 183 | 2 | City |
| Palisades | 4 | 299 | 275 | 1.36% | 533 | 1 | Village |
Claude is the largest city in Armstrong County, with a population of 1,186.
Palisades is the smallest city in Armstrong County, with a population of 299.
There are 4 cities in Armstrong County, Texas.