Mold Removal Cost And Risk In Knox County, IL

A typical professional mold job in Knox County runs about $1,300 to $5,250 before rebuild, using the Illinois nonmetro price level. Below are the 16 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Illinois rules.

1956Median year homes were built

82%Homes built before 1980

30%Homes rented, not owned

$104,900Median home value

23,788Housing units

49,294People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Knox County were built before 1956, and 82 percent went up before 1980. Older plumbing, roofs and window seals are where slow leaks start, and slow leaks are the mold most home policies leave out. About 30 percent of homes in Knox County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 61458 has the oldest homes here, a median year of 1938, and ZIP 61428 the newest, 1995.

Typical Prices In Knox County

JobSizeNational RangeKnox County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,300 to $5,250
Mold Remediationan attic$2,000 to $7,500$1,750 to $6,550
Mold Inspection and Testinga visual inspection$200 to $600$150 to $500
Mold Inspection and Testingan inspection with samples$300 to $1,000$250 to $850
Mold Inspection and Testinga clearance test$300 to $800$250 to $700

Estimate is the national range times 87.4 divided by 100, the price level for the nonmetro part of the state, rounded to $50. National ranges from Remediational cost guide, price level from BEA Regional Price Parities 2024.

The standard limited fungi endorsement caps mold at $5,000. Against a typical job here of up to $5,250, that cap falls short by about $250 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates none of the water hazards below as high for Knox County.

HazardFEMA Risk Rating
Inland floodingRelatively Low
Coastal floodingNot Applicable
HurricaneVery Low
Cold waveRelatively Moderate
Winter weatherRelatively Low

Source FEMA National Risk Index, December 2025, county level.

ZIP Code Neighborhoods In Knox County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
61401Knox County195484%$94,900
61410Knox County195495%$93,000
61414Knox County194294%$122,200
61428Knox County199528%$250,000
61430East Galesburg196977%$106,000
61436Knox County196774%$186,500
61439Knox County196785%$97,500
61448Knox County197084%$139,700
61458Knox County193892%$88,600
61467Knox County195185%$132,700
61472Knox County197661%$149,400
61474Knox County195588%$78,100
61485Knox County194088%$100,600
61488Knox County197277%$125,000
61489Knox County196973%$131,300
61572Knox County195387%$95,100

ZIP areas are Census ZIP Code Tabulation Areas, placed in the county that holds most of their land, per the Census 2020 ZIP relationship files.

Illinois Rules On Mold

Illinois Mold And Insurance Rules

All Illinois Mold And Insurance Rules lines

Illinois Department of Insurance

All Illinois Department of Insurance lines

All Illinois counties

Guides

Area Map

Knox County Area

Galesburg, IL