Scottish Gaelic

(Click the map to enlarge)

According to official statistics, the 477 Gaelic-only speakers recorded in 1971 had either become bilingual, or died during the following ten years: because the 1981 census recorded no Gaelic-only speakers left in Scotland. The 2001 Census recorded just under 60,000 people living in Scotland who could speak Gaelic, or 1.2% of the population, the lowest figure ever. The distribution of Gaelic-speakers within Scotland is shown on the map: with the proportion of people able to speak Gaelic increasing steadily as you progress west across the country and especially to the islands: with the highest density, at just under 75%, in northern Lewis.

Source- http://www.undiscoveredscotland.co.uk/usscotfax/soc/gaelic.html