Millbrook Township is located in Peoria County, Illinois. As of the 2020 census, its population was 419 and it contained 192 housing units. As of the 2010 census, its population was 488 and it contained 197 housing units.

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Town numbers

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Living in Millbrook

Work & commute in Millbrook

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Most working residents leave Millbrook for work: only 0% work in town. The top destinations are Peoria (25%), Princeville (19%) and Chicago (5%). Half commute less than 23 miles.

Peoria

25%

Princeville

19%

Chicago

Bloomington

0%Work in townlive and work in Millbrook 23 miWhere do people commute?the commute map 10Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Millbrook →

Health in Millbrook

Compared with Illinois

6better than IL·3worse

of 32 measures CDC estimates. The other 23 are too close to call.

Conditions 3▼ 9 close Habits all close Care 2▲ 5 close Mind all close Everyday needs 4▲ 0 close

BetterToo close to callWorse

What stands out

6.3%Fewer uninsured adultsIL 9.9% · better 9%Fewer adults facing housing insecurityIL 13.2% · better 9.8%More adults who have had cancerIL 7.6% · worse

Care nearby

Osf Saint Luke Medical CenterKewanee · 20.5 mi · ER · rural critical access

Community Health Partnership of IllinoisPrinceville · 9.3 mi · sliding-scale fees

Primary careShortage · county-wide

DentalShortage · county-wide

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · ZIP codes 61451, 61517, 61529 · CMS · HRSAHealth in Millbrook →

Natural hazards in Millbrook

Low

Expected storm and flood damage is higher than in 27% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🌵 Drought

0Does Millbrook flood?no paid flood claims on record 1Disasters that paid out herefederal disaster sent FEMA money to Millbrook MapMillbrook vs. its neighborsnearby towns shaded by rating

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Millbrook →

Climate in Millbrook

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Millbrook has chilly winters and warm summers. A typical July afternoon reaches 85°, a January night drops to 15°, and about 21 inches of snow falls in a normal winter.

35° / 19°Winter

62° / 40°Spring

84° / 62°Summer

64° / 42°Fall