195 Countries Ranked by Population — Smallest to Biggest

What are the smallest and biggest countries by population? This Curiosity Scale ranking counts 195 states: 193 United Nations member states plus the 2 United Nations non-member observer states. The ranking goes from the smallest population to the largest, using World Bank population data for the main list and a documented fallback for Vatican City where the World Bank dataset does not provide the same normal population series. Population estimates vary by source and year, so treat this as a source-backed comparison snapshot, not a live census counter. Sources / method: United Nations — Member States list United Nations — Non-Member Observer States list World Bank — SP.POP.TOTL population indicator, 2024 Wikipedia population list — used only as fallback/cross-check for Vatican City Flag assets: FlagCDN / flag-icons PNGs; local reusable flag library Subscribe for more source-backed timelines, comparisons, and curiosity videos. #CuriosityScale #Countries #Population #Geography #Ranking