Hermiston, OR GIS Map
Hermiston is a city in Umatilla County, Oregon, with a population of about 18,757. The map below shows its location, boundary and surrounding roads, with federal GIS layers you can turn on for the area.
- County
- Umatilla County
- Population
- 18,757
- Elevation
- 460 ft
- Coordinates
- 45.8404, -119.2895
- ZIP code
- 97838
- Land area
- 8.5 sq mi
- Time zone
- America/Los Angeles
About Hermiston, OR
Hermiston is a city in Umatilla County, Oregon, United States. Its population of 20,322 makes it the largest city in Eastern Oregon. Hermiston is the largest and fastest-growing city in the Hermiston-Pendleton Micropolitan Statistical Area, the eighth largest Core Based Statistical Area in Oregon with a combined population of 92,261 at the 2020 census. Hermiston sits near the junction of I-82 and I-84, and is 7 miles (11 km) south of the Columbia River, the Washington state line, Lake Wallula, and the McNary Dam. The Hermiston area has become a hub for logistics and data center activity due to the proximity of the I-82 and I-84 interchange, Pacific Northwest fiber-optic backbone, and low power costs.
Source: Wikipedia (CC BY-SA 4.0)
Cities Near Hermiston
- Kennewick, WA27 mi
- Pendleton, OR27 mi
- Pasco, WA29 mi
- Richland, WA31 mi
- Walla Walla, WA48 mi
- La Grande, OR68 mi
- Yakima, WA78 mi
- Moses Lake, WA89 mi
Other Cities in Umatilla County
GIS Data for Hermiston, OR
The Hermiston map loads live federal GIS layers in your browser, so you can check flood zones, terrain, land cover and district boundaries for any address in Hermiston without a separate GIS login. Everything below is drawn from public U.S. government data.
Layers you can turn on
FEMA flood zones
National Flood Hazard Layer — flood insurance rate map zones.
Elevation contours and hillshade
USGS 3DEP terrain, so you can read slope and relief.
Land cover
NLCD land cover classes — forest, developed, wetland, water.
School districts
Census TIGER unified and elementary school district boundaries.
ZIP code and county boundaries
Census TIGER ZCTA and county boundary lines.
Map tools
Measure distance and area
Draw a line or polygon to get length in miles or area in acres.
Sketch and annotate
Add points, lines and shapes on top of the map.
Inspect any point
Click the map to read coordinates, elevation and the layers under your cursor.
Download the map
Save the current view as a PNG image.
Hermiston Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
19,546
Households
6,564
Median household income
$66,998
Median age
30.9 years
Median home value
$266,700
Median gross rent
$1,088/mo
Owner-occupied homes
61.7%
Bachelor's degree or higher
16.7%
Below poverty level
10.1%
Land area
8.5 sq mi
Population density
2,311 / sq mi
County
ZIP codes in Hermiston
Hermiston Population Growth
Source: U.S. Census Bureau, 2010 Census and Population Estimates Program (Vintage 2024: April 2020 estimates base and July 1, 2024 estimate).
2010 Census
16,745
April 2020 (estimates base)
19,430
July 2024 estimate
19,746
Change 2010-2020
+16.0%
Change 2020-2024
+1.6%
Photos of Hermiston
Hover over a photo to see it larger. Tap on mobile.
Photos from Wikimedia Commons, taken in or near Hermiston. Credits and licenses are shown in the larger view.
Soils of Hermiston
General soil map unit at the city center: Sagehill-Quincy-Koehler
Soil Properties
- Drainage class
- Excessively drained
- Hydrologic soil group
- A (high infiltration, low runoff)
- Available water storage (0–150 cm)
- 15.5 cm
- Typical slope
- 7%
- Flooding frequency
- None
Soil Components
- Quincy30%
Entisols · Xeric Torripsamments
- Koehler10%
Aridisols · Xeric Haplodurids
- Quincy9%
Entisols · Xeric Torripsamments
- Adkins8%
Aridisols · Xeric Haplocalcids
- Sagehill8%
Aridisols · Xeric Haplocalcids
- Burbank5%
Entisols · Xeric Torriorthents
Source: USDA NRCS U.S. General Soil Map (STATSGO2). General soil map data (1:250,000 scale) is not suitable for site-specific decisions.
Climate of Hermiston
30-year averages (1991–2020) from the Hermiston Muni Ap, Or weather station, elevation 641 ft, 1.7 miles from the city center.
Warmest month
Jul · avg high 93°F
Coldest month
Dec · avg low 28°F
Annual precipitation
8.6 in
Average Monthly Temperatures (°F)
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 43 | 49 | 59 | 67 | 76 | 82 | 93 | 91 | 81 | 66 | 51 | 42 |
| Avg low °F | 29 | 29 | 34 | 39 | 46 | 53 | 59 | 57 | 48 | 39 | 32 | 28 |
| Precip. in | 1.14 | 0.86 | 0.77 | 0.78 | 0.83 | 0.64 | 0.12 | 0.17 | 0.33 | 0.80 | 1.05 | 1.12 |
Source: NOAA NCEI U.S. Climate Normals, 1991–2020. Conditions at the station may differ from other parts of the city.
Natural Hazard Risk in Hermiston
FEMA National Risk Index ratings for Umatilla County, compared with all U.S. counties.
Overall risk
Score 82.3 of 100
Expected annual loss
Buildings, population & agriculture
Social vulnerability
Susceptibility to hazard impacts
Community resilience
Ability to prepare & recover
Risk by Hazard
- WildfireRelatively Moderate
- Cold WaveRelatively High
- Ice StormRelatively High
- LandslideRelatively Moderate
- Winter WeatherRelatively High
- EarthquakeRelatively Low
- Heat WaveRelatively Moderate
- Strong WindRelatively Moderate
- DroughtRelatively Moderate
- Inland FloodingRelatively Moderate
- AvalancheRelatively Low
- Volcanic ActivityVery Low
- LightningRelatively Low
- HailRelatively Low
- TornadoVery Low
Source: FEMA National Risk Index (December 2025 release). County-level ratings are relative to other U.S. counties and are not a property-specific assessment.
Hermiston FAQ
What county is Hermiston in?
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Hermiston, Oregon is located in Umatilla County.
What is the population of Hermiston?
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Hermiston has a population of about 18,757, making it the number 28 of the 45 Oregon cities listed on GIS Map.
What is the elevation of Hermiston?
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The elevation of Hermiston is approximately 460 feet (140 meters) above sea level at the city center.
What ZIP codes are in Hermiston?
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The ZIP code for Hermiston is 97838.
What time zone is Hermiston in?
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Hermiston is in the Pacific Time zone (America/Los Angeles).
How far is Hermiston from Salem?
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Hermiston is about 192 miles from Salem, the capital of Oregon, in a straight line.
How far is Hermiston from Portland?
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Hermiston is about 165 miles from Portland, the largest city in Oregon listed on GIS Map, in a straight line.
What cities are near Hermiston?
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Cities near Hermiston include Kennewick, WA (27 miles); Pendleton, OR (27 miles); Pasco, WA (29 miles); Richland, WA (31 miles); Walla Walla, WA (48 miles).
Local notes for Hermiston, OR
Questions and local knowledge from people who know the area. Every note is read before it appears here.