All Countries
Bartlett, IL
Full City Profile · Illinois · DuPage County County
4.0
/5.0
A
Great
40,531
Population
2,569/sq mi density
$130,479
Median Income
$53,076 per capita
$350,500
Home Value
$421,269 Zillow
$1,857
Median Rent
28.6% income on rent
50°F
Avg Temperature
275 sunny days/yr
56
Violent Crime/100K
460 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$130,479 median income, 1.5% unemployment
A+
Affordability
5.0 / 5.0
$350,500 home value, $1,857/mo rent
F
Safety
1.0 / 5.0
56 violent crimes/100K
A+
Education
4.9 / 5.0
48.5% bachelor's degree or higher
Bartlett experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 23°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 33.2 inches. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
74°F Jul (23°C)
| Annual Average | 49.7°F |
| 8% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 764 ft (233 m) |
| Area | 15.9 sq mi (41.1 km²) |
| Population Density | 2,569/sq mi |
| Coordinates | 41.9606°N, 88.1777°W |
| Timezone | America/Chicago |
| County | DuPage County County |
| Nearest Airport | Chicago O'Hare International (ORD) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0475 ppm |
| PM2.5 (Fine Particles) | 10.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.7 / 100 |
| Social Vulnerability | 15.8 / 100 |
| Community Resilience | 71.8 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Very High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 111 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.6 in | Coldest |
| February | 26°F (-3°C) | 1.3 in | Driest |
| March | 37°F (3°C) | 2.5 in | |
| April | 48°F (9°C) | 3.8 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 69°F (21°C) | 4.2 in | Wettest |
| July | 74°F (23°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 4.1 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 39°F (4°C) | 3.0 in | |
| December | 27°F (-3°C) | 2.2 in |
Bartlett has a seasonal temperature swing of 50°F / from 23°F in January to 74°F in July. Total annual precipitation is 36.7 inches, with June being the wettest month (4.2") and February the driest (1.3").