Lincoln is a city in Tama County, Iowa, United States.

[4] Lincoln was founded by Charles Spencer and bore a number of short-lived names before adopting Berlin.

[6] After the outbreak of World War I, Berlin's many German residents faced verbal and physical abuses as part of the wave of anti-German sentiment that swept the country.

[7] According to the United States Census Bureau, the city has a total area of 0.46 square miles (1.19 km2), all land.

There were 75 housing units at an average density of 133.6 per square mile (51.6/km2).

There were 81 housing units at an average density of 176.1 per square mile (68.0/km2).

27.9% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older.

There were 90 housing units at an average density of 195.9 per square mile (75.6/km2).

28.0% of all households were made up of individuals, and 18.7% had someone living alone who was 65 years of age or older.

About 13.7% of families and 15.5% of the population were below the poverty line, including 26.3% of those under the age of eighteen and 7.1% of those 65 or over.