Arcos de Valdevez's 2026 population is now estimated at 20,924. In 2021, the population of Arcos de Valdevez was 20,693. Arcos de Valdevez has grown by 52 in the last year, which represents a 0.25% annual change. These population values and projections come from Portugal INE API indicator 0012917 resident population municipal total and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Lisbon | 596,952 | 1.83% |
| Sintra | 410,420 | 1.17% |
| Vila Nova de Gaia | 317,859 | 0.78% |
| Porto | 264,493 | 2.31% |
| Cascais | 228,079 | 1.28% |
| Loures | 214,856 | 1.18% |
| Braga | 209,328 | 1.42% |
| Amadora | 187,541 | 1.62% |
| Almada | 187,519 | 1.05% |
| Matosinhos | 185,501 | 1.22% |
| Seixal | 183,000 | 1.71% |
| Oeiras | 181,965 | 1.15% |
| Gondomar | 171,928 | 0.75% |
| Odivelas | 161,278 | 1.59% |
| Guimaraes | 156,587 | 0.02% |
| Coimbra | 150,409 | 1.19% |
| Maia | 149,556 | 1.68% |
| Santa Maria da Feira | 142,787 | 0.79% |
| Vila Franca de Xira | 142,764 | 0.73% |
| Leiria | 140,182 | 1.52% |
