Dimiao is located on the southern coast of the province. How it got its name is not known It is one of the oldest municipalities which had a population of 8,820 in 1897. This town used to occupy a large territory which included Valencia and Lila. Later, Valencia was separated from Dimiao because of increased population and Lila was made and independent municipality on January 1, 1915.
| Dimiao at a glance | |
| Population (2015): | 14364 |
| Population (2010): | 15166 |
| Population (2000): | 14151 |
| Number of households (2000): | 2708 |
| Land area: | 7713 ha |
| Number of barangays: | 35 |
| Distance from Tagbilaran: | 37 km |
| Barangay | Population (2000) | Households (2000) | Population (2010) | Population (2015) |
| Abihid | 413 | 70 | 333 | 343 |
| Alemania | 179 | 35 | 208 | 167 |
| Baguhan | 370 | 74 | 324 | 334 |
| Bakilid | 180 | 35 | 165 | 164 |
| Balbalan | 283 | 55 | 273 | 278 |
| Banban | 496 | 90 | 521 | 520 |
| Bauhugan | 304 | 57 | 308 | 316 |
| Bilisan | 153 | 28 | 161 | 164 |
| Cabagakian | 533 | 95 | 649 | 545 |
| Cabanbanan | 327 | 52 | 416 | 352 |
| Cadap-agan | 481 | 76 | 445 | 469 |
| Cambacol | 276 | 52 | 248 | 256 |
| Cambayaon | 330 | 66 | 372 | 415 |
| Canhayupon | 627 | 108 | 669 | 661 |
| Canlambong | 539 | 76 | 526 | 477 |
| Casingan | 217 | 48 | 207 | 199 |
| Catugasan | 268 | 50 | 313 | 267 |
| Datag | 200 | 35 | 221 | 241 |
| Guindaguitan | 457 | 96 | 455 | 437 |
| Guingoyuran | 446 | 80 | 538 | 514 |
| Ile | 245 | 49 | 269 | 254 |
| Lapsaon | 473 | 84 | 455 | 424 |
| Limokon Ilaod | 531 | 120 | 641 | 526 |
| Limokon Ilaya | 736 | 133 | 724 | 654 |
| Luyo | 846 | 159 | 960 | 836 |
| Malijao | 308 | 98 | 319 | 295 |
| Oac | 639 | 127 | 805 | 732 |
| Pagsa | 307 | 52 | 309 | 332 |
| Pangihawan | 169 | 35 | 242 | 187 |
| Puangyuta | 254 | 47 | 297 | 312 |
| Sawang | 441 | 94 | 491 | 514 |
| Tangohay | 654 | 139 | 635 | 671 |
| Taongon Cabatuan | 556 | 116 | 594 | 533 |
| Taongon Can-andam | 600 | 125 | 802 | 683 |
| Tawid Bitaog | 313 | 52 | 271 | 292 |
(Based on figures from the census of 2000, 2010, and 2015 from PSA)