Evolución de la población en Arrabalde
de 1900 al 2025
* El INE (no actualizado) registra 186 habitantes
| Año | Hombres | Mujeres | Total |
| 2025 | 98 | 84 | 182* |
| 2024 | 101 | 93 | 194 |
| 2023 | 111 | 102 | 213 |
| 2022 | 114 | 104 | 218 |
| 2021 | 113 | 105 | 218 |
| 2020 | 106 | 106 | 212 |
| 2019 | 107 | 109 | 216 |
| 2018 | 113 | 119 | 232 |
| 2017 | 118 | 121 | 239 |
| 2016 | 122 | 125 | 247 |
| 2015 | 123 | 129 | 252 |
| 2014 | 127 | 135 | 262 |
| 2013 | 125 | 142 | 267 |
| 2012 | 129 | 149 | 278 |
| 2011 | 130 | 153 | 283 |
| 2010 | 137 | 152 | 289 |
| 2009 | 138 | 156 | 294 |
| 2008 | 145 | 166 | 311 |
| 2007 | 151 | 173 | 324 |
| 2006 | 151 | 176 | 327 |
| 2005 | 160 | 183 | 343 |
| 2004 | 169 | 196 | 365 |
| 2003 | 181 | 202 | 383 |
| 2002 | 186 | 198 | 384 |
| 2001 | 189 | 200 | 389 |
| 2000 | 189 | 202 | 391 |
| 1999 | 187 | 208 | 395 |
| 1998 | 193 | 209 | 402 |
| 1996 | 205 | 221 | 426 |
| 1995 | 226 | 243 | 469 |
| 1994 | 227 | 241 | 468 |
| 1993 | 234 | 244 | 478 |
| 1992 | 231 | 242 | 473 |
| 1991 | 232 | 242 | 474 |
| 1990 | 240 | 251 | 491 |
| 1989 | 240 | 256 | 496 |
| 1988 | 242 | 258 | 500 |
| 1987 | 257 | 269 | 526 |
| 1986 | 256 | 266 | 522 |
| 1981 | 0 | 0 | 513 |
| 1970 | 0 | 0 | 634 |
| 1960 | 0 | 0 | 826 |
| 1950 | 0 | 0 | 950 |
| 1940 | 0 | 0 | 1.003 |
| 1930 | 0 | 0 | 1.059 |
| 1920 | 0 | 0 | 1.056 |
| 1910 | 0 | 0 | 1.109 |
| 1900 | 0 | 0 | 1.176 |