Herrick is a village in Shelby County, Illinois, United States. The population was 436 at the 2010 census.

According to the 2010 census, Herrick has a total area of 0.37 square miles (0.96 km), all land.

Historical population

Census	Pop.	Note	%±
1900	421		—
1910	618		46.8%
1920	601		−2.8%
1930	474		−21.1%
1940	616		30.0%
1950	554		−10.1%
1960	440		−20.6%
1970	537		22.0%
1980	470		−12.5%
1990	466		−0.9%
2000	524		12.4%
2010	436		−16.8%
2020	358		−17.9%
U.S. Decennial Census

As of the census of 2000, there were 524 people, 197 households, and 136 families residing in the village. The population density was 1,442.8 inhabitants per square mile (557.1/km). There were 221 housing units at an average density of 608.5 per square mile (234.9/km). The racial makeup of the village was 99.62% White, 0.19% from other races, and 0.19% from two or more races. Hispanic or Latino of any race were 0.38% of the population.

There were 197 households, out of which 36.0% had children under the age of 18 living with them, 55.3% were married couples living together, 8.6% had a female householder with no husband present, and 30.5% were non-families. 25.4% of all households were made up of individuals, and 15.7% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.24.

In the village, the population was spread out, with 30.7% under the age of 18, 8.2% from 18 to 24, 25.2% from 25 to 44, 18.1% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 103.9 males. For every 100 females age 18 and over, there were 100.6 males.

The median income for a household in the village was $24,722, and the median income for a family was $30,000. Males had a median income of $30,227 versus $20,000 for females. The per capita income for the village was $11,243. About 18.1% of families and 22.0% of the population were below the poverty line, including 32.2% of those under age 18 and 9.1% of those age 65 or over.

• In 2019 Cowden-Herrick High School with help from wide receivers Aidan Fisher and William Wagner led the Division with an 8-2 record, leading the county in rankings.