The largest polygamous marriage percentages given by
@NS4Liberty are 53% in Gambia and Guinea.
According to Pew Research, Gambia and Guinea just happen to have the two highest average age discrepancies between spouses in the world -
14.5 and 13.5 years respectively. That will be no coincidence - the rate of polygamy is directly connected to the age disparity.
I reran the code from my previous post to calculate the ratio of males to females assuming a 14 year age discrepancy, for both Gambia and Guinea, using 2020 demographic data. This gave:
Gambia: 1.58 women per man
Guinea: 1.57 women per man
So based on that ratio, let's pretend the total population of Gambia seeking marriage in a particular year is 100 men and 158 women.
If 53% of marriages were polygamous (ie 53% of women are in a polygamous marriage), then out of every 158 women, 84 are in a polygamous marriage. If there were an average of 2.2 women per polygamous man, those 84 women are married to 38 men.
So out of every 100 men, 38 are polygamous.
That leaves 62 men (100 - 38), and 74 women (158 - 84).
Not only can every one of these men marry, even if they all married one woman each, there would STILL be women left unmarried.
No man is being left without a wife solely because of even that very high rate of polygamy - because it occurs within a particular demographic context which probably causes the polygamy in the first place.