Yoshikawa has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall.

The village of Yoshikawa was created within Kitakatsushika District, Saitama with the establishment of the modern municipalities system on April 1, 1889.

Foreigners living there have long complained of the highly prejudiced police force and city civil servants.

In terms of national politics, the city is part of Saitama 14th district of the lower house of the Diet of Japan.

Due to this location, Yoshikawa is primarily a bedroom community with over 19% of its population commuting to the Tokyo metropolis for work.