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Hillsboro, OR
Full City Profile · Oregon · Multnomah County County
3.5
/5.0
B+
Good
107,050
Population
4,049/sq mi density
$103,207
Median Income
$49,725 per capita
$483,400
Home Value
$516,726 Zillow
$1,896
Median Rent
28.0% income on rent
53°F
Avg Temperature
232 sunny days/yr
248
Violent Crime/100K
1,958 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$103,207 median income, 3.3% unemployment
A
Affordability
4.0 / 5.0
$483,400 home value, $1,896/mo rent
F
Safety
1.0 / 5.0
248 violent crimes/100K
A
Education
4.4 / 5.0
42.0% bachelor's degree or higher
Hillsboro experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 40°F in January while summers reach 70°F in July. The area gets 232 sunny days per year. Annual precipitation totals 45.4 inches. The area receives 23.4 inches of snow annually. Air quality is rated Good with a median AQI of 32.
Temperature
40°F Jan (4°C)
70°F Jul (21°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 40°F (4°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 232 days/yr |
Geography
| Elevation | 164 ft (50 m) |
| Area | 23.9 sq mi (61.9 km²) |
| Population Density | 4,049/sq mi |
| Coordinates | 45.5268°N, 122.9354°W |
| Timezone | America/Los_Angeles |
| County | Multnomah County County |
| Nearest Airport | Portland International (PDX) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0329 ppm |
| NO₂ (Nitrogen Dioxide) | 9.5 ppb |
| SO₂ (Sulfur Dioxide) | 0.44 ppb |
| CO (Carbon Monoxide) | 0.16 ppm |
| PM2.5 (Fine Particles) | 6.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.5 / 100 |
| Social Vulnerability | 29.8 / 100 |
| Community Resilience | 95.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Coastal Flood | Relatively Low |
| Volcano | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 250.0 m (820 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1980 | WASHINGTON | Explosion | 250.0 m | 61 | 95 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: West Crater (77 km).
| Name | Type | Elevation | Last Eruption | Distance |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 77 km |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 95 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 98 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 98 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 130 km |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 135 km |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 150 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 163 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 173 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 180 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 7.2 in | |
| February | 43°F (6°C) | 5.8 in | |
| March | 46°F (8°C) | 4.8 in | |
| April | 50°F (10°C) | 3.2 in | |
| May | 55°F (13°C) | 2.4 in | |
| June | 60°F (16°C) | 1.7 in | |
| July | 70°F (21°C) | 0.7 in | Warmest, Driest |
| August | 66°F (19°C) | 1.0 in | |
| September | 62°F (16°C) | 1.9 in | |
| October | 53°F (12°C) | 3.5 in | |
| November | 45°F (7°C) | 7.2 in | |
| December | 40°F (4°C) | 7.8 in | Coldest, Wettest |
Hillsboro has a seasonal temperature swing of 30°F / from 40°F in December to 70°F in July. Total annual precipitation is 47.0 inches, with December being the wettest month (7.8") and July the driest (0.7").