Belgium, who finished third in the 2018 World Cup in Russia, remain at the top of the FIFA rankings amid the coronavirus pandemic, ahead of world champions France.
Brazil are at No. 3, ahead of England in fourth spot.
The global football governing body released its latest World Ranking after Poland’s national football team had a successful run of two wins and a draw in three matches played at home this month.
Poland on October 14 beat 10-man Bosnia-and-Herzegovina 3-0 in their fourth game in the group stage of the Nations League.
On October 11, captain Robert Lewandowski led the Poles to a hard-fought goalless draw with Italy in the Baltic city of Gdańsk.
On October 7, the Polish team routed Finland 5-1 in a friendly match on home turf that saw a number of less familiar faces fielded by Poland manager Jerzy Brzęczek.
Brzęczek earlier this year agreed a contract extension to manage the Polish national football team until at least the end of next year.
The extension came after this year’s European championships were postponed until 2021.
The Polish team last year celebrated advancing to the European tournament for the fourth time after a successful qualifying campaign.
Brzęczek, a former Poland captain, took over as Poland manager to replace Adam Nawałka in the summer of 2018 after the national squad's early World Cup exit disappointed fans.
Poland in 2017 had climbed to No. 5 in the FIFA table, the best result for the Polish team since the world football governing body’s ranking was launched in 1992.
Poland's lowest place in the world rankings was 78th, in 2013.