[4] As of the 2020 United States census, there were 13,577 people, 4,851 households, and 3,124 families residing in the county.

27.80% of all households were made up of individuals, and 15.10% had someone living alone who was 65 years of age or older.

Over the past few election cycles Izard County has trended heavily towards the GOP.

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

However, the United States census does list Arkansas population based on townships (sometimes referred to as "county subdivisions" or "minor civil divisions").

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