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Featured local agent — Island Lake, IL
Sarah Mitchell
Compass Real Estate · Island Lake, IL
“Your trusted relocation specialist since 2009. 350+ homes sold. Zero-pressure, data-first approach.”
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Island Lake, IL Housing Market
The typical home in Island Lake, IL is worth $309,427, rose 6.2% over the past year (Zillow Home Value Index, July 2026). The last median sale price Redfin published was $359,250, +28.3% year over year (through May 2026). With 3.4 months of supply and homes going under contract in about 41 days, Island Lake is a seller's market. At today's 6.66% 30-year fixed rate, 20% down on a $309,427 home is about $1,591/mo in principal and interest.
Key numbers for Island Lake, IL
Typical home value
$309,427
+6.2% in 12 months
Zillow, July 2026
Median sale price
$359,250
+28.3% year over year
Redfin, through May 2026
Days on market
41
Average pace
Redfin, through May 2026
Active listings
27
3.4 months of supply
Redfin, through May 2026
30-yr fixed rate
6.66%
Freddie Mac weekly average
Freddie Mac via FRED, August 2026
Median household income
$98,125
Home costs 3.2x income
U.S. Census ACS, 2023
Sale-to-list ratio
102.7%
Selling above asking
Redfin, through May 2026
Zillow figures are as of July 2026 and refresh monthly. Redfin figures are through May 2026 — Redfin stopped publishing its public market trackers in June 2026, so those numbers are final, not current. Mortgage rates come from Freddie Mac via FRED and update weekly.
Is Island Lake a buyer's or seller's market?
Island Lake, IL is a seller's market, based on 3.4 months of supply and homes selling in about 41 days. Under 4 months of supply tilts the market toward sellers: homes clear faster than they are replaced, so concessions are scarce.
Inputs are Redfin's final published period (May 2026). How we classify markets · Where the data comes from
What does the Island Lake housing market data show?
Every row below is Redfin's final published month for Island Lake, IL. Redfin, through May 2026
| Metric | Value |
|---|---|
| Median sale price | $359,250 |
| Median list price | $344,450 |
| Year-over-year price change | +28.3% |
| Median price per sq ft | $194/sq ft |
| Median days on market | 41 days |
| Active inventory | 27 listings |
| Months of supply | 3.4 months |
| Sale-to-list price ratio | 102.7% |
| Homes sold (that month) | 8 |
| New listings (that month) | 14 |
| Listings with a price cut | 3.7% |
| Market condition | Seller's market |
How to read these numbers
- Median sale price
- Half the homes that closed sold for more than this, half for less. It moves with what kind of home sold that month, so a quiet month with two big sales can swing it. Redfin's figure for Island Lake is frozen at May 2026.
- Typical home value (ZHVI)
- Zillow's estimate of what a mid-market home in Island Lake is worth right now, whether or not it sold. It is smoother than the median sale price and it still refreshes monthly, which is why this page leads with it.
- Months of supply
- How long it would take to sell every active listing at the current pace. Under 3 favors sellers, over 6 favors buyers, and 3 to 6 is the balanced band.
- Days on market
- Median time from listing to accepted offer. Short means you should have financing ready before you tour; long means there is room to negotiate on price and repairs.
- Sale-to-list ratio
- Sale price divided by the last asking price. Above 100% means bidding above asking is normal here; below 100% means the typical buyer got a discount.
- Price per square foot
- The size-adjusted price. Use it to compare a 1,400 sq ft house to a 2,600 sq ft house, not to value your own home — lot, condition and age move it a lot.
- Listings with a price cut
- Share of active listings that dropped their asking price in the month. A high share is the earliest visible sign that sellers are ahead of what buyers will pay.
- Typical asking rent (ZORI)
- Zillow's repeat-rent index for asking rents on new leases. Paired with the home value it gives the price-to-rent ratio in the rent-vs-buy section below.
How have Island Lake home prices moved?
Over the last three years the median sale price in Island Lake, IL rose 61.5%, from $222,500 to $359,250. The live Zillow value series has rose 6.2% in the last 12 months, which is the more current read now that Redfin's series has stopped. 3.7% of Island Lake listings cut their asking price in the final Redfin month — a modest share, which is what a market looks like when sellers are pricing close to where homes actually clear. For prices to fall meaningfully from here, supply would have to keep building past 3.4 months while the sale-to-list ratio slips below its current 102.7%. Watch those two together — they move before the median does.
Redfin, through May 2026 — the chart ends at Redfin's final published month.
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What does it cost to buy a home in Island Lake?
Priced off the typical home value of $309,427 at the current 6.66% 30-year fixed rate. These are principal and interest only — property taxes, homeowner's insurance, HOA dues and mortgage insurance are on top, and they vary enough by property that we will not guess them for you.
| Down payment | Cash at close | Loan amount | Monthly P&I |
|---|---|---|---|
| 20% | $61,885 | $247,542 | $1,591/mo |
| 5% | $15,471 | $293,956 | $1,889/mo |
Zillow, July 2026 for the price · Freddie Mac via FRED, August 2026 for the rate
What income do you need?
Lenders generally want housing costs under 28% of gross income. On the 20%-down payment of $1,591, that implies roughly $68,176 a year before you add taxes and insurance. The median household in Island Lake earns $98,125, about $29,949 more than that threshold — the typical local household clears the payment on a typical local home with 20% down. That puts the price-to-income ratio at 3.2x — close to the historical 3x norm, which is unusual in 2026.
Run it with your own numbers: affordability calculator · mortgage calculator
Buying in Island Lake in the next 12 months?
Tell us your timeline. We send the Island Lake market brief: the price ranges that actually clear, how long homes sit, and what to fix on your credit before you apply.
Is it cheaper to rent or buy in Island Lake?
Zillow does not publish a rent index (ZORI) for Island Lake, IL, so we cannot compute a price-to-rent ratio here without borrowing a nearby market's rents and calling them local — which we will not do. The rent vs. buy calculator works with a rent figure you supply.
Is inventory rising or falling in Island Lake?
Active listings in Island Lake, IL went from 19 in May 2025 to 27 in May 2026, a +42.1% change. Rising inventory is the single most useful leading indicator for buyers: more choice, longer marketing times, and more sellers willing to negotiate before price cuts show up in the median.
| Month | Active listings | New listings |
|---|---|---|
| June 2025 | 15 | 12 |
| July 2025 | 17 | 14 |
| August 2025 | 17 | 8 |
| September 2025 | 15 | 12 |
| October 2025 | 17 | 8 |
| November 2025 | 18 | 8 |
| December 2025 | 11 | 3 |
| January 2026 | 13 | 8 |
| February 2026 | 13 | 9 |
| March 2026 | 15 | 13 |
| April 2026 | 21 | 16 |
| May 2026 | 27 | 14 |
Redfin, through May 2026
How does Island Lake compare to Illinois and the U.S.?
Island Lake homes sell for $359,250 — 6% above the Illinois median of $337,900. Against the national median of $410,700, Island Lake runs 13% lower. Year-over-year, Island Lake moved +28.3% against Illinois's +5.9% — a bigger swing than the state as a whole.
| Market | Median sale price | YoY | Days on market |
|---|---|---|---|
| Island Lake, IL | $359,250 | +28.3% | 41 days |
| Illinois statewide | $337,900 | +5.9% | 43 days |
| United States | $410,700 | not published | not published |
City and state rows: Redfin, through May 2026 · U.S. row: Freddie Mac via FRED, April 2026 (MSPUS, quarterly)
What to do next in Island Lake
What buyers should watch
- Months of supply, currently 3.4. It turns before price does — when it climbs past 6, sellers start taking offers they would have rejected a quarter earlier.
- The share of listings cutting price, currently 3.7%. A listing that has already cut once is the one most likely to accept below asking.
- The gap between 5% and 20% down here is $298 a month in principal and interest alone, before mortgage insurance. That gap, not the price, is usually what decides your timeline.
- Rate moves. At 6.66%, every full point of rate change moves the payment on a $309,427 home more than a 5% price change does.
- Your credit tier before you shop, not after — it sets the rate you are quoted. Run your numbers first.
What sellers should know
- The median Island Lake listing goes under contract in 41 days. If yours passes that mark, the market is telling you the price is wrong — not that you need more showings.
- Homes here close at 102.7% of asking. Price at the number you want and let competition do the rest.
- In the last published month Island Lake added 14 new listings against 8 sales — more competition arriving than clearing, so early timing matters.
- Your equity moved +6.2% in the last 12 months on the Zillow value series. That, not the price you paid, is what sets your net proceeds.
- Comparable ZIP-level pricing inside Island Lake varies more than the citywide median suggests — check the ZIP pages below before you set a number.
Homes for sale in Island Lake
There are currently 27 homes listed for sale in Island Lake, Illinois. The median listing price is $344K.
Active listings
27
Homes on market
Median list price
$344K
Avg. days on market
41
Days until sale
New this week
14
Newly listed
How much do homes cost in Island Lake by property type?
How the Island Lake, IL market breaks down across single-family homes, condos and townhouses. Redfin, through May 2026
| Property type | Median price | Price / sq ft | Homes sold | Days on market |
|---|---|---|---|---|
| Single-family | $365,000 | $202/sq ft | 7 | 37 days |
| Condo / co-op | $244,000 | $192/sq ft | 1 | 35 days |
| Townhouse | $240,000 | $185/sq ft | 1 | 52 days |
Who lives in Island Lake?
American Community Survey estimates for Island Lake. U.S. Census ACS, 2023
Population
8,023
Households
2,889
Median income
$98,125/yr
Median age
39.5 years
Owner-occupied
81.7%
Median home value
$241,900
Median gross rent
$1,855/mo
Mean commute
31.8 min
81.7% of occupied homes in Island Lake are owner-occupied, and the rest are rented — which is the share that decides how much of the local housing stock ever reaches the for-sale market. The Census self-reported median home value is $241,900 against Zillow's $309,427 typical value; the gap is normal — ACS asks owners what they think their home is worth, Zillow models transactions.
Which public schools serve Island Lake?
2 schools tracked · 1,065 students
The largest public schools serving Island Lake, IL by enrollment, drawn from the National Center for Education Statistics. School quality is a commonly cited factor in home-buying decisions — these are the campuses families in this area are most likely to encounter.
Cotton Creek School
Grades PK-5 · 598 students
Matthews Middle School
Grades 6-8 · 467 students
Source: National Center for Education Statistics, Common Core of Data directory. Updated annually. Ratings and test scores are not currently displayed.
Which cities are near Island Lake, IL?
Ordered by distance from Island Lake, not by size. Compare Island Lake side by side with any of them.
Island Lake housing market FAQ
Is Island Lake a buyer's or seller's market?
Island Lake, IL is currently a seller's market. That read comes from 3.4 months of supply, homes going under contract in about 41 days, and sellers getting 102.7% of their asking price in the last month Redfin published (May 2026).
How much do homes cost in Island Lake?
The typical home in Island Lake, IL is worth $309,427 (Zillow Home Value Index, July 2026). The median sale price in the last month Redfin published was $359,250, about $194 per square foot.
Is Island Lake cheaper than the rest of Illinois?
Island Lake's median sale price of $359,250 is 6% higher than the Illinois statewide median of $337,900, and 13% below the U.S. median of $410,700. Both figures are for the same period.
How long do homes take to sell in Island Lake?
Homes in Island Lake, IL spent a median of 41 days on market before going under contract, versus 43 days statewide. That is a normal pace: enough time to see a home twice, not enough to wait a month. (Redfin, through May 2026.)
What income do you need to buy a home in Island Lake?
At the current 30-year fixed rate of 6.66%, 20% down on a $309,427 home is about $1,591 a month in principal and interest. Lenders typically want that under 28% of gross income, which works out to roughly $68,176 a year before taxes, insurance, HOA dues or mortgage insurance. The local median household income is $98,125.
Are home prices rising in Island Lake?
The typical home value in Island Lake, IL rose 6.2% over the last 12 months, from $291,444 to $309,427 (Zillow, July 2026). This is the live series — it refreshes monthly.
What are the cheapest ZIP codes in Island Lake?
Island Lake ZIP-level sale prices are not all published for the same period, so ranking them would compare different months. The ZIP pages listed on this page show what we hold for each one individually.
Is now a good time to buy in Island Lake?
That depends on your timeline, not on a headline. What the data says today: Island Lake, IL is a seller's market with 3.4 months of supply, the 30-year fixed rate is 6.66%. Properties Incorporated publishes the data; it does not give financial advice.
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One email: what homes are actually clearing at around $309,427, how long they sit, which ZIPs run cheaper, and what to fix on your credit before you apply.