සියෙරා ලියොන් ජනරජය Motto: "Unity, Freedom, Justice" ජාතික ගීය: High We Exalt Thee, Realm of the Free Location of  සියෙරා ලියෝන්  (dark blue) – in Africa  (light blue & dark grey) – in the African Union  (light blue)  —  [Legend] අගනුවර (and largest city) ෆ්‍රිටව්න් 8°29.067′N 13°14.067′W﻿ / ﻿8.48445°N 13.23445°W﻿ / 8.48445; -13.23445 Vernacular Temne, Mende, Krio ජන වර්ග (2008) Temne 35% Mende 31% Limba 8% Kono 5% Krio (Creole) 2% Mandingo 2% Loko 2% other 15% Demonym Sierra Leonean Government Unitary presidential Constitutional republic  -  President Ernest Bai Koroma (APC)  -  Vice President Alhaji Samuel Sam-Sumana (APC)  -  Speaker of Parliament Abel Bankole Stronge (APC)  -  Chief Justice Umu Hawa Tejan-Jalloh ව්‍යවස්ථාදායකය Parliament Independence  -  from the United Kingdom 27 April 1961   -  Republic declared 19 April 1971  Area  -  Total 71,740 km2 (119th) 27,699 sq mi   -  Water (%) 1.1 Population  -  2012 estimate 5,485,998[1]   -  2004 census 4,976,871   -  Density 79.4/km2 (114th1) 205.6/sq mi GDP (PPP) 2011 estimate  -  Total $5.093 billion[2]   -  Per capita $849[2]  GDP (nominal) 2011 estimate  -  Total $2.196 billion[2]   -  Per capita $366[2]  Gini (2003) 62.9 (high)  HDI (2011) ▲ 0.336 (low) (180th) Currency Leone (SLL) Time zone GMT (UTC+0) Drives on the right (since 1 March 1971) Internet TLD .sl Calling code 232 1 Rank based on 2007 figures.