Population during each prime minister's tenure
Every prime minister since 1991, ranked by how population changed from their first day in office. Politare shows what happened during a tenure; it does not claim the office-holder caused it.
| # | Prime minister | In office | Total | Per year | Chart |
|---|---|---|---|---|---|
| 1 | TRT Thaksin Shinawatra | 9 Feb 2001 – 19 Sep 2006 | +5.7% 2000 → 2006 | +0.9%/yr | |
| 2 | DP Chuan Leekpai | 23 Sep 1992 – 13 Jul 1995 | +4.5% 1992 → 1995 | +1.5%/yr | |
| 3 | DP Chuan Leekpai | 9 Nov 1997 – 9 Feb 2001 | +3.8% 1997 → 2000 | +1.2%/yr | |
| 4 | N Prayut Chan-o-cha | 22 May 2014 – 9 Jun 2019 | +2.2% 2013 → 2018 | +0.4%/yr | |
| 5 | DP Abhisit Vejjajiva | 17 Dec 2008 – 5 Aug 2011 | +2.1% 2008 → 2011 | +0.7%/yr | |
| 6 |  Prayut Chan-o-cha | 9 Jun 2019 – 22 Aug 2023 | +0.5% 2018 → 2023 | +0.1%/yr |
Sorted by total, highest first. Every row is indexed to the last count complete before the first day in office ("from" marks a start that had to move because that count had no data, or because the period cut it); Levels are per cent changes, rates are differences in %; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. millions, mid-year estimate · World Bank (SP.POP.TOTL) from the UN's World Population Prospects, mid-year · Thailand data · as of Aug 2026.