Island Lake: Housing & Real Estate
Island Lake homes sell at a median $262,500 (estimated market value runs 21% higher at $317,407), with median rent $1,874 (1.3× higher than McHenry County median $1,401; 1.5× higher than Illinois median $1,274). Homeownership rate: 82.7%. That's 1.2× below the McHenry County median ($308,100); about the same as the Illinois median ($263,300). Market is warm. Vacancy rate 5.1%. New construction makes up 3.0% of stock. 1 nursing facility on file. A municipal building code is in effect.
- 2.5× annual income — home value vs. household income (vs Illinois 4.0×).
- 11.7 years to break even renting at the median (vs Illinois 18y).
- 4-BR rent is 1.8× a studio — rent gradient by unit size.
- Median rent runs 5% above HUD 2-BR FMR — local market vs federal subsidy benchmark.
Home Values & Rent
Median home value $262,500 — 0.8× the Illinois median ($314,700). Median rent $1,874/month. homeownership rate 82.7% — above the U.S. share of ~65%.
| Affordability · Home Price To Income | 2.5× |
|---|---|
| Affordability · Home Affordability | affordable |
| Affordability · Rent Pct Income | 21.6% |
| Affordability · Rent Affordability | affordable |
| Affordability · Pct Severely Rent Burdened | 37.9% |
| Affordability · Poverty Rate | 6.7% |
| Affordability · Property Tax Pct Income | 6.3% |
| Fair Market Rent · Studio rent | $1,480 (at Illinois median) |
| Fair Market Rent · One-bedroom rent | $1,581 (at Illinois median) |
| Fair Market Rent · Two-bedroom rent | $1,781 (at Illinois median) |
| Fair Market Rent · Three-bedroom rent | $2,294 (at Illinois median) |
| Fair Market Rent · Four-bedroom rent | $2,653 (at Illinois median) |
| Fair Market Rent · HUD FMR area | Chicago-Joliet-Naperville, IL HUD Metro FMR Area |
| Fair Market Rent · Fiscal year | FY2026 |
| Home Value Estimate | $317,407 |
| Median Home Value | $262,500 (vs Illinois $314,700) |
| Median Rent | $1,874 (vs Illinois $1,440) |
Sources: HUD FMR FY2026 · Census ACS 5-Year 2023, B25077 · Census ACS 5-Year 2023 · Refreshed 2026-04-12
Tenure & Occupancy
Owner-occupied vs renter-occupied housing units, plus vacancy rates.
| Housing Market · Market temperature | warm |
|---|---|
| Housing Market · Vacancy rate | 5.1% |
| Housing Market · New construction (% of stock) | 3.0% |
| Housing Market · Price Appreciation 2Yr | 8.5% |
Utilities
Electricity, water, and broadband infrastructure serving residents. Broadband percentages reflect the share of premises that can subscribe to service at the listed speed (FCC Form 477).
Systems (1)
| Broadband · % of premises with 25/3 Mbps broadband | 100.0% (at Illinois median) |
|---|---|
| Broadband · % of premises with 100/20 Mbps broadband | 100.0% (at Illinois median) |
| Broadband · % of premises with 250/25 Mbps broadband | 100.0% (at Illinois median) |
| Broadband · % of premises with 1 Gbps / 100 Mbps broadband | 99.6% (vs Illinois 76.8%) |
| Broadband · Broadband-capable premises | 3,644 |
| Electricity · Electricity rate (¢/kWh) | 15.87¢/kWh |
| Electricity · Customers | 5392477 |
| Electricity · Revenue Millions | $7,118 |
| Electricity · Year | 2024 |
| Mobile Broadband · 3G mobile coverage | 0.000000000 |
| Mobile Broadband · 4G mobile coverage | 1.000000000 (at Illinois median) |
| Mobile Broadband · 5G mobile coverage | 1.000000000 (at Illinois median) |
| Mobile Home Parks Detail · County total | 2 |
Sources: FCC BDC Jun 2025 · EIA Annual Retail Sales 2023 · FCC BDC Mobile 2024 · HIFLD / IRS BMF · Refreshed 2026-04-12
Other
| Homeownership Rate | 82.7% (vs Illinois 66.4%) |
|---|---|
| Median Year Built | 1990 |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12