[3] The county was named for Abraham Lincoln, sixteenth president of the United States.

[5] The 2020 United States census counted 19,581 people, 7,545 households, and 5,386 families in Lincoln County, Wyoming.

There were 9,489 housing units at an average density of 2.3 per square mile (0.9/km2).

24.0% of households consisted of individuals and 10.7% had someone living alone who was 65 years of age or older.

[15] The percent of those with a bachelor’s degree or higher was estimated to be 15.5% of the population.

[11] The 2016-2020 5-year American Community Survey estimates show that the median household income was $71,898 (with a margin of error of +/- $4,107).

[22] In terms of ancestry, 25.7% were English, 20.1% were American, 19.2% were German, 7.5% were Irish, and 5.0% were Italian.

[25] As of the 2000 United States Census,[26] there were 14,573 people, 5,266 households, and 3,949 families in the county.

The racial makeup of the county was 97.15% White, 0.10% Black or African American, 0.57% Native American, 0.23% Asian, 0.05% Pacific Islander, 0.71% from other races, and 1.19% from two or more races.

21.0% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.

In only one national election since 1948 has the county selected the Democratic Party nominee.