| Official Name: | Belvidere Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Boone County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Boone County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Boone |
| Established Title: | Settlement |
| Established Date: | November 6, 1849 |
| Area Total Sq Mi: | 36.54 |
| Area Land Sq Mi: | 36.09 |
| Area Water Sq Mi: | 0.45 |
| Area Water Percent: | 1.23 |
| Population As Of: | 2020 |
| Population Total: | 29441 |
| Population Density Sq Mi: | auto |
| Elevation M: | 248 |
| Elevation Ft: | 814 |
| Coordinates: | 42.2836°N -88.8903°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 61008, 61011, 61016, 61065, 61107, 61111, 61114 |
| Blank Name: | FIPS code |
| Blank Info: | 17-007-05105 |
| Unit Pref: | Imperial |
Belvidere Township is one of nine townships in Boone County, Illinois, United States. As of the 2020 census, its population was 29,441 and it contained 11,356 housing units.[1]
According to the 2010 census, the township has a total area of, of which (or 98.77%) is land and (or 1.23%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains these four cemeteries: Belvidere, Highland Garden of Memories, Orth and Saint James Catholic.
As of the 2020 census there were 29,441 people, 10,814 households, and 7,386 families residing in the township. The population density was 805.41PD/sqmi. There were 11,356 housing units at an average density of 310.66/sqmi. The racial makeup of the township was 69.04% White, 2.51% African American, 1.17% Native American, 1.20% Asian, 0.06% Pacific Islander, 13.70% from other races, and 12.33% from two or more races. Hispanic or Latino of any race were 27.85% of the population.
There were 10,814 households, out of which 32.40% had children under the age of 18 living with them, 48.88% were married couples living together, 14.49% had a female householder with no spouse present, and 31.70% were non-families. 27.30% of all households were made up of individuals, and 15.90% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.28.
The township's age distribution consisted of 24.1% under the age of 18, 9.3% from 18 to 24, 22.5% from 25 to 44, 26% from 45 to 64, and 18.0% who were 65 years of age or older. The median age was 39.9 years. For every 100 females, there were 93.5 males. For every 100 females age 18 and over, there were 93.4 males.
The median income for a household in the township was $61,338, and the median income for a family was $77,060. Males had a median income of $40,767 versus $27,764 for females. The per capita income for the township was $31,460. About 6.7% of families and 11.5% of the population were below the poverty line, including 15.1% of those under age 18 and 7.9% of those age 65 or over.