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Buying a home in Mount Prospect, Illinois

The typical owner-occupied home in Mount Prospect is worth about $397,400, 51% above the Illinois median of $263,300 and 19% above the national median of $332,700. Owners pay a median $8,425 a year in property taxes, about 2.12% of their home's value, higher than the Illinois rate of 2.01%. The median household earns $101,720 a year, so the median home costs 3.9 times the median income (3.2 times for Illinois). 69% of occupied homes here are lived in by their owners, and 57% of those owners still have a mortgage.

Mount Prospect at a glance

Mount Prospect Illinois U.S.
Median home value $397,400 $263,300 $332,700
Median property tax paid per year $8,425 $5,298 $3,119
Property tax as a share of value 2.12% 2.01% 0.94%
Median household income $101,720 $83,390 $80,734
Homes lived in by their owners 69% 67% 65%
Owner homes with a mortgage 57% 61% 61%
Median monthly costs, owners with a mortgage $2,619 $1,987 $1,963
Those costs as a share of the owners' income 21.9% 20.6% 21.0%
Median rent $1,502 $1,274 $1,413
Rent as a share of renters' income 30.3% 29.1% 30.6%
Median year homes were built 1969 1971 1980
Vacant homes 4.1% 7.7% 10.1%
Population 55,472 12,694,798 334,922,499

What a typical home costs per month in Mount Prospect

At this week's average 30-year rate of 7.11%, buying the median Mount Prospect home of $397,400 with 20% down costs about $3,006 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $3,668, because the loan is bigger and FHA adds mortgage insurance.

Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $128,843 for the 20%-down payment. That payment is 35% of the median Mount Prospect household income of $101,720; at that income and 20% down, the 28% guideline points to a home of about $314,000.

The median rent here is $1,502 a month, so owning the median home costs about $1,504 a month more than renting, before you count the equity you build and any tax benefits.

20% down, 30-year conventional loan
Down payment$79,480
Loan amount$317,920
Principal and interest$2,139
Property taxes (2.12% a year)$702
Homeowners insurance (our estimate, 0.5% a year)$166
PMI$0
Total per month$3,006

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3.5% down, 30-year FHA loan
Down payment$13,909
Loan amount$390,202
Principal and interest$2,625
Property taxes (2.12% a year)$702
Homeowners insurance (our estimate, 0.5% a year)$166
FHA mortgage insurance$176
Total per month$3,668

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Questions about home buying in Mount Prospect

What is the median home value in Mount Prospect?

About $397,400 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.

How much are property taxes in Mount Prospect?

Homeowners pay a median $8,425 a year, which is about 2.12% of the median home value. Your bill depends on your home's assessed value and local rates.

What income do you need to buy a home in Mount Prospect?

For the median home with 20% down at 7.11%, the payment is about $3,006 a month. Keeping that under 28% of gross income takes about $128,843 a year.

More about Mount Prospect

Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data