| Dewey | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Champaign |
| Subdivision Type3: | Township |
| Subdivision Name3: | East Bend |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.25 |
| Area Land Km2: | 0.25 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.10 |
| Area Land Sq Mi: | 0.10 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 105 |
| Population Density Km2: | 420.05 |
| Population Density Sq Mi: | 1082.47 |
| Elevation Ft: | 732 |
| Coordinates: | 40.3192°N -88.2833°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 61840 |
| Blank Name: | FIPS code |
| Blank Info: | 17-19746 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2804651 |
| Unit Pref: | Imperial |
Dewey is an unincorporated community and census-designated place in East Bend Township, Champaign County, Illinois, United States.
According to the 2021 census gazetteer files, Dewey has a total area of 0.1sqmi, all land.[2]
As of the 2020 census[3] there were 105 people, 33 households, and 25 families residing in the CDP. The population density was 1082.47PD/sqmi. There were 49 housing units at an average density of 505.15/sqmi. The racial makeup of the CDP was 85.71% White, 0.95% African American, and 13.33% from two or more races. Hispanic or Latino of any race were 1.90% of the population.
There were 33 households, out of which 42.4% had children under the age of 18 living with them, 51.52% were married couples living together, 24.24% had a female householder with no husband present, and 24.24% were non-families. The average household size was 2.52 and the average family size was 2.73.
The CDP's age distribution consisted of 17.8% under the age of 18, 6.7% from 18 to 24, 43.3% from 25 to 44, 32.2% from 45 to 64, and 0.0% who were 65 years of age or older. The median age was 37.6 years. For every 100 females, there were 63.6 males. For every 100 females age 18 and over, there were 54.2 males.
The town of Dewey and its post office were established in 1876, and both were first named Behrens, "in honor of Henry Behrens on whose land the town was laid out."[4] The Havana, Rantoul and Eastern Railroad also built a station there, but named it Dewey, after railroad investor Milo C. Dewey.[5] The post office changed its name to Dewey in 1878, and the town became known by that name.[4]