Sierra Leone · Under-5 Mortality (WHO)
90.52024
Unit: per 1,000 live births. Publisher measure: Under-five mortality rate (probability of dying by age 5 per 1000 live births).
Probability of dying before the fifth birthday, both sexes and the whole wealth population (total wealth group), expressed per 1,000 live births under reference-year mortality conditions.
Measurement basis: UN Inter-agency Group for Child Mortality Estimation (UN IGME) modelled or adjusted mortality probabilities/rates, disseminated by WHO.
Reference-period cadence: annual.
Source update cadence: annual. This does not establish a publication date for an individual reading.
Displayed values are rounded, with extra precision when needed to keep a positive estimate positive. Downloads retain the full numeric estimate and the publisher's original display text separately.
A “<” sign means strictly below the stated number. Numeric readings and uncertainty endpoints keep their own comparison signs. A number without a sign does not establish certainty or an observed outcome.
World Health Organization (Global Health Observatory); retrieved 2026-09-07. Retrieval time is separate from an official publisher release vintage.
Download this immutable source capture · Source and coverage corrections
One row per country, indicator and year, with raw values, source links and reuse notices. Thresholds have an empty numeric value and separate number/operator fields; value_kind distinguishes upper bounds from absent readings.
History and uncertainty
Charts plot numeric readings. Reported upper bounds create gaps; their values, uncertainty endpoints and source notes remain available in the table and downloads.
Reported estimates and uncertainty · 69 rows
Each comparison sign applies to its own reading or uncertainty endpoint. Values retain source precision. “Not reported” identifies an absent reading or uncertainty endpoint in this source capture.
| Country | Year | Reading | Lower endpoint | Upper endpoint | Publisher note |
|---|---|---|---|---|---|
| Sierra Leone | 1956 | 413.826767396 | 341.077095106 | 504.675224707 | — |
| Sierra Leone | 1957 | 407.702789113 | 344.469240408 | 485.159978022 | — |
| Sierra Leone | 1958 | 401.365588833 | 346.558426477 | 467.479796072 | — |
| Sierra Leone | 1959 | 395.828655442 | 347.762925836 | 451.716865058 | — |
| Sierra Leone | 1960 | 390.005590132 | 348.065758509 | 438.991068087 | — |
| Sierra Leone | 1961 | 384.379122148 | 346.693089699 | 426.926670475 | — |
| Sierra Leone | 1962 | 378.687703775 | 344.104151167 | 417.945407598 | — |
| Sierra Leone | 1963 | 372.92045874 | 340.748262834 | 408.279849832 | — |
| Sierra Leone | 1964 | 367.164655865 | 336.000217723 | 400.653388073 | — |
| Sierra Leone | 1965 | 361.121564569 | 330.730725062 | 394.26325366 | — |
| Sierra Leone | 1966 | 355.061800917 | 324.635103563 | 387.95964295 | — |
| Sierra Leone | 1967 | 349.037504872 | 318.683160894 | 382.346424214 | — |
| Sierra Leone | 1968 | 343.212568007 | 312.470845365 | 376.540178355 | — |
| Sierra Leone | 1969 | 337.50061648 | 306.610458949 | 371.02288461 | — |
| Sierra Leone | 1970 | 332.072667726 | 301.147139428 | 365.536468058 | — |
| Sierra Leone | 1971 | 326.635997492 | 296.19789897 | 359.930377958 | — |
| Sierra Leone | 1972 | 321.466266892 | 291.326867031 | 354.045540458 | — |
| Sierra Leone | 1973 | 316.463735552 | 286.450892098 | 348.71088263 | — |
| Sierra Leone | 1974 | 311.915622589 | 281.745131453 | 343.272641334 | — |
| Sierra Leone | 1975 | 307.151149215 | 277.56288683 | 338.601081725 | — |
| Sierra Leone | 1976 | 302.666094635 | 273.601366897 | 333.610882952 | — |
| Sierra Leone | 1977 | 298.245473065 | 269.565700429 | 328.84759617 | — |
| Sierra Leone | 1978 | 294.032064209 | 265.553122352 | 324.273058 | — |
| Sierra Leone | 1979 | 289.966419221 | 262.239368052 | 320.246321528 | — |
| Sierra Leone | 1980 | 286.070350351 | 258.561827044 | 316.116587235 | — |
| Sierra Leone | 1981 | 282.581017485 | 255.472233986 | 311.720379659 | — |
| Sierra Leone | 1982 | 279.188198429 | 252.617798984 | 307.492252371 | — |
| Sierra Leone | 1983 | 276.051018002 | 250.078267507 | 303.185127235 | — |
| Sierra Leone | 1984 | 273.12370685 | 247.969679828 | 299.396644393 | — |
| Sierra Leone | 1985 | 270.304954977 | 245.753830731 | 295.701138299 | — |
| Sierra Leone | 1986 | 267.519784098 | 244.122849418 | 291.940622369 | — |
| Sierra Leone | 1987 | 264.81505675 | 242.351737836 | 288.109028703 | — |
| Sierra Leone | 1988 | 262.19136883 | 240.732707916 | 284.651466721 | — |
| Sierra Leone | 1989 | 260.105566216 | 239.594095683 | 281.422161596 | — |
| Sierra Leone | 1990 | 258.017741542 | 238.506591037 | 278.524613576 | — |
| Sierra Leone | 1991 | 255.955589835 | 237.241640654 | 275.908269894 | — |
| Sierra Leone | 1992 | 253.840949465 | 235.715534959 | 273.177829282 | — |
| Sierra Leone | 1993 | 251.741119493 | 234.245459348 | 270.263499125 | — |
| Sierra Leone | 1994 | 249.05009404 | 231.984440932 | 267.441522402 | — |
| Sierra Leone | 1995 | 245.902760886 | 229.078920385 | 263.915512165 | — |
| Sierra Leone | 1996 | 242.154588066 | 225.724123277 | 259.698405242 | — |
| Sierra Leone | 1997 | 237.877840705 | 221.979114022 | 255.115927081 | — |
| Sierra Leone | 1998 | 233.124330831 | 217.671470726 | 249.783896025 | — |
| Sierra Leone | 1999 | 228.19767647 | 212.922788445 | 244.264214744 | — |
| Sierra Leone | 2000 | 222.837455356 | 208.016791908 | 238.561422129 | — |
| Sierra Leone | 2001 | 217.264331289 | 202.733400199 | 232.781966322 | — |
| Sierra Leone | 2002 | 211.648098903 | 197.354294256 | 226.643696662 | — |
| Sierra Leone | 2003 | 205.725239611 | 191.749491603 | 220.326170369 | — |
| Sierra Leone | 2004 | 199.560072922 | 185.99556984 | 213.777672701 | — |
| Sierra Leone | 2005 | 193.22143529 | 180.04107954 | 207.082961927 | — |
| Sierra Leone | 2006 | 186.535578453 | 173.719987146 | 200.040057324 | — |
| Sierra Leone | 2007 | 179.55514317 | 167.198631469 | 192.647808104 | — |
| Sierra Leone | 2008 | 172.435337211 | 160.351139905 | 185.207286819 | — |
| Sierra Leone | 2009 | 165.152813523 | 153.400023508 | 177.838071239 | — |
| Sierra Leone | 2010 | 157.879742445 | 146.390237029 | 170.228059612 | — |
| Sierra Leone | 2011 | 150.771566236 | 139.521488028 | 163.141564418 | — |
| Sierra Leone | 2012 | 144.092524837 | 133.006688639 | 156.594529808 | — |
| Sierra Leone | 2013 | 137.925093259 | 126.885799649 | 150.581207179 | — |
| Sierra Leone | 2014 | 135.927727174 | 124.280666365 | 149.165907415 | — |
| Sierra Leone | 2015 | 136.751727251 | 124.045432292 | 151.107015293 | — |
| Sierra Leone | 2016 | 121.75370037 | 109.384450741 | 136.024732485 | — |
| Sierra Leone | 2017 | 116.97479759 | 103.599233516 | 132.340938185 | — |
| Sierra Leone | 2018 | 112.44414614 | 97.972712359 | 129.087422378 | — |
| Sierra Leone | 2019 | 108.2690228 | 92.76486413 | 126.22690873 | — |
| Sierra Leone | 2020 | 104.354311286 | 87.706206424 | 123.910114225 | — |
| Sierra Leone | 2021 | 100.631692021 | 82.650609365 | 122.753621894 | — |
| Sierra Leone | 2022 | 97.094685509 | 77.716517018 | 121.673085296 | — |
| Sierra Leone | 2023 | 93.77243866 | 72.798668704 | 121.133175356 | — |
| Sierra Leone | 2024 | 90.499585667 | 68.024630718 | 120.184272517 | — |
One row per country, indicator and year, with raw values, source links and reuse notices. Thresholds have an empty numeric value and separate number/operator fields; value_kind distinguishes upper bounds from absent readings.