Illinois · Census place 1705092

Belvidere, Illinois

Belvidere is a city in Boone County, Illinois with an estimated 25,325 residents on July 1, 2024. It is the 88th largest of 651 incorporated places of 1,000+ people in the state.

Population 2024: 25,325; #88 of 651 in Illinois
Change since 2020: +0.2%; +54 people
Land area: 12.7 sq mi; + 0.24 sq mi water
Density: 2,000 / sq mi; State median 2,177

Orange pin: Belvidere. Shaded: its county. Dark pin: Springfield.

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Tools and pages that start from Belvidere

Belvidere population, 2020 to 2024

Belvidere added 54 residents from July 2020 to July 2024, a change of +0.2%. In the latest year it moved by +16. Among 330 Illinois places of 5,000 or more, that growth ranks 97th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Belvidere is 1.7 times that size.

July 1 estimates. The April 2020 estimates base was 25,333. The axis starts above zero so yearly changes are visible.

Belvidere covers 12.66 square miles of land and 0.24 of water, for 2,000 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Belvidere is close to the typical town.

What county Belvidere is in

All of Belvidere's residents live in Boone County, which had 53,313 residents in 2024. Belvidere holds 47.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Belvidere

1 ZIP Code Tabulation Area (ZCTA) overlaps Belvidere by at least 10% of the ZCTA's or the city's land: 61008. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Belvidere is

The Census internal point of Belvidere is at 42.265400, -88.887800. Springfield, the capital, is 176.2 miles SSW in a straight line. The nearest larger place is Rockford, IL (147,486 people), 9.0 miles away.

Internal point

Decimal: 42.265400, -88.887800
DMS: 42°15'55.44"N 88°53'16.08"W
UTM: 16N 344305.5E 4680969.4N
Geohash: dp8b3q1vu
Plus code: 86JH7486+5V

Daylight in Belvidere

At 42.27° N, Belvidere gets about 15 h 16 min of daylight around the June solstice and 9 h 05 min around the December solstice, a swing of 6 h 11 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Belvidere

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Cherry Valley, 4.9 miles away, with 2,888 people.

Questions people ask

What is the population of Belvidere, IL?

25,325 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 54 (0.2%) from 25,271 in July 2020.

What county is Belvidere in?

Boone County. All of its residents live in that county.

What ZIP codes cover Belvidere?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 61008.

How far is Belvidere from Springfield?

176.2 miles (283.6 km) in a straight line, heading SSW from Belvidere.

What is the nearest larger city to Belvidere?

Rockford, IL, with 147,486 residents, 9.0 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

How every number is computed: methodology. Spotted a wrong figure? Report an error.