Gardner is a village in Grundy County, Illinois, United States. The population was 1,463 at the 2010 census.

Gardner is located at 41°11′16″N 88°18′34″W / 41.18778°N 88.30944°W / 41.18778; -88.30944 (41.187881, -88.309524).

As of the census of 2000, there were 1,406 people, 558 households, and 392 families residing in the village. The population density was 1,351.4 people per square mile (522.0/km²). There were 580 housing units at an average density of 557.5 per square mile (215.3/km²). The racial makeup of the village was 98.36% White, 0.07% African American, 0.07% Native American, 0.14% Asian, 0.92% from other races, and 0.43% from two or more races. Hispanic or Latino of any race were 3.27% of the population.

There were 558 households out of which 35.3% had children under the age of 18 living with them, 56.8% were married couples living together, 8.8% had a female householder with no husband present, and 29.7% were non-families. 26.0% of all households were made up of individuals and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.04.

Illinois (ⁱ/ˌɪlɨˈnɔɪ/ IL-i-NOY) is the 25th most extensive and the 5th most populous of the 50 United States, and is often noted as a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal, timber, and petroleum in the south, Illinois has a broad economic base. Illinois is a major transportation hub. The Port of Chicago connects the state to other global ports from the Great Lakes, via the Saint Lawrence Seaway, to the Atlantic Ocean; as well as the Great Lakes to the Mississippi River, via the Illinois River. For decades, O'Hare International Airport has ranked as one of the world's busiest airports. Illinois has long had a reputation as a bellwether both in social and cultural terms and politics.

Although the state's largest population centers today are in northern Illinois, originally the state's population grew from south to north, with settlers arriving from Kentucky in the 1810s. In 1818, Illinois achieved statehood. Chicago was founded in the 1830s on the banks of the Chicago River, one of the few natural harbors on southern Lake Michigan. Railroads and John Deere's invention of the self-scouring steel plow turned Illinois' rich prairie into some of the world's most productive and valuable farmlands, attracting immigrant farmers from Germany and Sweden. By 1900, the growth of industrial jobs in the northern cities and coal mining in the central and southern areas attracted immigrants from Eastern and Southern Europe. Illinois was an important manufacturing center during both world wars. The Great Migration established a large community of African Americans in Chicago that created the city's famous jazz and blues cultures.