| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Aghalenty | city | County Donegal | Ireland | 54.99 | -7.6838889 | 334 | 2161 |
| Aghalough | city | County Donegal | Ireland | 54.5663889 | -7.8416667 | 278 | 2057 |
| Aghaveagh | city | County Donegal | Ireland | 54.7966667 | -7.8852778 | 449 | 2315 |
| Aghlem Bridge | city | County Donegal | Ireland | 54.6566667 | -8.0191667 | 495 | 2325 |
| Aighe | city | County Donegal | Ireland | 54.7372222 | -8.4308333 | 524 | 2155 |
| Ailt an Chorrain | city | County Donegal | Ireland | 54.9855556 | -8.4311111 | 6 | 908 |
| Ailt an Chorráin | city | County Donegal | Ireland | 54.9855556 | -8.4311111 | 6 | 908 |
| Alt | city | County Donegal | Ireland | 54.765 | -7.5913889 | 387 | 2655 |
| Alt Lower | city | County Donegal | Ireland | 54.7666667 | -7.5833333 | 377 | 2873 |
| Alt Upper | city | County Donegal | Ireland | 54.765 | -7.5913889 | 387 | 2655 |
| Altadoo | city | County Donegal | Ireland | 54.6822222 | -8.1716667 | 282 | 2150 |
| Altadush | city | County Donegal | Ireland | 54.9313889 | -7.9494444 | 501 | 2310 |
| Altahalla | city | County Donegal | Ireland | 55.2463889 | -7.4077778 | 259 | 2256 |
| Altnagapple | city | County Donegal | Ireland | 54.7283333 | -8.3761111 | 482 | 2264 |
| Altnapaste | city | County Donegal | Ireland | 54.8147222 | -7.8991667 | 269 | 2315 |
| An Baile Nua | city | County Donegal | Ireland | 54.9963889 | -7.5191667 | 121 | 2119 |
| An Bun Beag | city | County Donegal | Ireland | 55.0597222 | -8.3002778 | 3 | 1648 |
| An Carraigin | city | County Donegal | Ireland | 54.95 | -7.4333333 | 16 | 4363 |
| An Carraigín | city | County Donegal | Ireland | 54.95 | -7.4333333 | 16 | 4363 |
| An Charraig | city | County Donegal | Ireland | 54.6575 | -8.6316667 | 157 | 1616 |
| An Cheathru Chaol | city | County Donegal | Ireland | 55.1333333 | -7.65 | 416 | 1934 |
| An Cheathrú Chaol | city | County Donegal | Ireland | 55.1333333 | -7.65 | 416 | 1934 |
| An Clochan Liath | city | County Donegal | Ireland | 54.9511111 | -8.3591667 | 452 | 1931 |
| An Clochán Liath | city | County Donegal | Ireland | 54.9511111 | -8.3591667 | 452 | 1931 |
| An Craoslach | city | County Donegal | Ireland | 55.1166667 | -7.9 | 180 | 2164 |
| An Duchoraidh | city | County Donegal | Ireland | 54.9063889 | -8.2094444 | 219 | 2311 |
| An Dúchoraidh | city | County Donegal | Ireland | 54.9063889 | -8.2094444 | 219 | 2311 |
| An Fal Carrach | city | County Donegal | Ireland | 55.1333333 | -8.1 | 187 | 1364 |
| An Fál Carrach | city | County Donegal | Ireland | 55.1333333 | -8.1 | 187 | 1364 |
| An Inis | city | County Donegal | Ireland | 55.0702778 | -7.4805556 | 3 | 1626 |
| An Lathaigh | city | County Donegal | Ireland | 54.6166667 | -8.1 | 150 | 2133 |
| Annagary | city | County Donegal | Ireland | 55.0219444 | -8.3177778 | 232 | 2112 |
| Aphort | city | County Donegal | Ireland | 54.9763889 | -8.5194444 | 0 | 464 |
| Arbatt | city | County Donegal | Ireland | 54.8783333 | -7.9797222 | 498 | 2311 |
| Ard an Ratha | city | County Donegal | Ireland | 54.7644444 | -8.4075 | 150 | 2201 |
| Ard an Rátha | city | County Donegal | Ireland | 54.7644444 | -8.4075 | 150 | 2201 |
| Ardagh | city | County Donegal | Ireland | 54.9369444 | -7.5347222 | 269 | 2309 |
| Ardara | city | County Donegal | Ireland | 54.7644444 | -8.4075 | 150 | 2201 |
| Ardarn | city | County Donegal | Ireland | 54.7644444 | -8.4075 | 150 | 2201 |
| Ardeevin | city | County Donegal | Ireland | 54.6911111 | -8.0194444 | 262 | 2324 |
| Ardmeen | city | County Donegal | Ireland | 54.9777778 | -8.26 | 459 | 2307 |
| Ardmore | city | County Donegal | Ireland | 55.0797222 | -7.2775 | 88 | 10496 |
| Ardnaglass | city | County Donegal | Ireland | 54.8152778 | -7.5497222 | 226 | 2495 |
| Ardnaree | city | County Donegal | Ireland | 55.0591667 | -7.6286111 | 0 | 2058 |
| Ards | city | County Donegal | Ireland | 55.0216667 | -7.6833333 | 255 | 2217 |
| Ardvally | city | County Donegal | Ireland | 54.74 | -8.3608333 | 780 | 2321 |
| Arryheernabin | city | County Donegal | Ireland | 55.27 | -7.6405556 | 239 | 818 |
| Ashbrook | city | County Donegal | Ireland | 54.4744444 | -8.1922222 | 396 | 2027 |
| Aughagault | city | County Donegal | Ireland | 54.8655556 | -7.7316667 | 249 | 2314 |
| Aughagault Big | city | County Donegal | Ireland | 54.8666667 | -7.7333333 | 249 | 2314 |
| Aughagault Little | city | County Donegal | Ireland | 54.8666667 | -7.7166667 | 265 | 2314 |
| Aughkeely | city | County Donegal | Ireland | 54.8675 | -7.8105556 | 501 | 2314 |
| Aughnish Isle | city | County Donegal | Ireland | 55.0519444 | -7.5980556 | 13 | 1656 |
| Aught Upper | city | County Donegal | Ireland | 55.1072222 | -7.2522222 | 259 | 3950 |
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