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Third Lake, IL
Village in Lake County, Illinois.
Population
1,137
Land area
0.6sq mi
People per sq mi
1,933
ZIP codes
0
Third Lake and its ZIP codes
Third Lake at a glance
- Third Lake is about 8.5 times as dense as Illinois as a whole.
- Households here earn a median of $150,139 a year, 80% more than the Illinois figure of $83,390.
- A typical owner-occupied home is valued at $361,500 (37% above Illinois).
Local data for Third Lake, IL
Counts from official public data
Housing and community stats
Third Lake, IL, American Community Survey 2020-2024
Median household income
$150,139
Poverty rate
2.0%
Median home value
$361,500
Homeownership
99.1%
Bachelor's or higher
69.1%
Median age
52.2
Average commute
29.8 min
Largest reported origins and ancestries: German Americans (372), Irish Americans (207), Polish Americans (193).
Economy and federal money
Jobs, pay, income and spending are for Lake County. PPP loans are for Third Lake.
Unemployment rate
3.8%
Aug 2026, -0.8 pts in a year
Average annual pay
$92,733
325,826 jobs, 2025
Income per person
$103,546
BEA, 2024
Federal spending
$5B
FY 2026, $7,004 per person
How people get to work
Third Lake, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone67.1%
- Carpooled5.8%
- Public transit3.2%
- Walked2.7%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home20.9%
Average one-way commute: 29.8 minutes for people who do not work from home.
Environment and hazard risk
Third Lake, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: cold wave
Storm events since 1996
815
Countywide, mostly thunderstorm wind
Flood insurance policies
1,857
0.8% of homes, county
July high / Jan low
82° / 15°F
37.8 inches of rain a year
Health statistics
Share of adults in Third Lake, IL, CDC PLACES estimates
Obesity
31.3%
U.S. 33.3% -2.0 pts
Diabetes
9.9%
U.S. 12.1% -2.2 pts
Smoking
8.6%
U.S. 12.8% -4.2 pts
Uninsured (18-64)
4.5%
U.S. 11.1% -6.6 pts
Cities near Third Lake
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Gages LakeCensus-designated place | 1.6 mi | 3 |
| GrayslakeVillage | 2 mi | 10.9 |
| Grandwood ParkCensus-designated place | 2.1 mi | 1.4 |
| Venetian VillageCensus-designated place | 3.2 mi | 1.8 |
| LindenhurstVillage | 3.4 mi | 4.5 |
| HainesvilleVillage | 3.6 mi | 1.8 |
| Round Lake BeachVillage | 3.8 mi | 5 |
| Round Lake ParkVillage | 4.3 mi | 2.1 |
| Round LakeVillage | 5 mi | 5.6 |
| Round Lake HeightsVillage | 5.1 mi | 0.6 |
| Lake VillaVillage | 5.1 mi | 6.5 |
| Old Mill CreekVillage | 5.2 mi | 10.7 |
| GurneeVillage | 5.4 mi | 13.5 |
| Park CityCity | 5.9 mi | 1.2 |
| Long LakeCensus-designated place | 6.2 mi | 1.2 |
| LibertyvilleVillage | 6.6 mi | 8.8 |
Frequently asked questions
- What county is Third Lake, IL in?
- Third Lake is in Lake County, Illinois.
- What is the population of Third Lake, IL?
- About 1,137 people live in Third Lake, based on American Community Survey 5-year estimates.
- What cities are near Third Lake?
- Nearby places include Gages Lake (1.6 mi), Grayslake (2 mi), Grandwood Park (2.1 mi), Venetian Village (3.2 mi), Lindenhurst (3.4 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023