Siero's 2026 population is now estimated at 53,371.In 1996, the population of Siero was 46,315.Siero has grown by 322 in the last year, which represents a 0.61% annual change.These population values and projections come from INE wstempus municipal register population totals and World Population Review Internal Projections.
City | 2026 Pop.↓ | Growth |
|---|---|---|
| Madrid | 3,543,630 | 1.05% |
| Barcelona | 1,748,128 | 0.95% |
| Valencia | 850,475 | 1.15% |
| Zaragoza | 696,009 | 0.42% |
| Sevilla | 689,481 | 0.01% |
| Malaga | 603,540 | 0.75% |
| Murcia | 483,780 | 0.91% |
| Palma | 437,849 | 0.7% |
| Palmas de Gran Canaria, Las | 382,090 | 0.06% |
| Alacant/Alicante | 372,813 | 1.8% |
| Bilbao | 351,462 | 0.1% |
| Cordoba | 323,053 | -0.06% |
| Valladolid | 303,396 | 0.26% |
| Vigo | 294,224 | -0.09% |
| Hospitalet de Llobregat, L' | 294,202 | 1.62% |
| Gijon | 269,623 | -0.1% |
| Vitoria-Gasteiz | 262,164 | 0.56% |
| Coruna, A | 252,521 | 0.39% |
| Elx/Elche | 248,013 | 1% |
| Terrassa | 235,224 | 0.84% |
