The Union army took control the same day and occupied Pulaski County until the end of the Civil War.

[3] As of the 2020 United States census, there were 399,125 people, 158,000 households, and 93,080 families residing in the county.

[14] In the Reconstruction Era following the Civil War, Republicans carried the county in every presidential election from 1868 to 1888.

[citation needed] Pulaski County has followed in the footsteps of most urban counties across the country, especially in the era of Barack Obama's presidency and post-presidency that has seen urban areas turn bluer and rural areas, such as most of Arkansas, to become even redder and more conservative.

Joe Biden's 59.98% share in 2020 is the highest for a Democrat in the county since 1976, besting even Arkansas native Bill Clinton in both 1992 and 1996.

Each township includes unincorporated areas and some may have incorporated towns or cities within part of their space.

However, the US Census does list Arkansas population based on townships (often referred to as "minor civil divisions").

Each town or city is within one or more townships in an Arkansas county based on census maps.