Zip Code 97838 — Hermiston, OR

ZIP Code 97838 is associated with Hermiston, OR, in Umatilla County. The listed population estimate is 28,512; estimated density is 54.4 people per square mile. Among records with population estimates, it ranks #1 of 13 in Umatilla County and #59 of 421 in OR.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (45.852660, -119.288780)

Data MetricLocal Statistic
Postal / Zip Code97838
Primary CityHermiston
State / ProvinceOR
CountyUmatilla
Total Population28,512
Population Density54.4 people/sq mi
TimezoneAmerica/Los_Angeles

How 97838 Compares

MetricZIP 97838Umatilla County recordsOR records
Population estimate28,51280,001 (sum)4,254,259 (sum)
Population Density54.4 /sq mi----
County population rank#1 of 13----
State population rank#59 of 421----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in OR

ZIP CodeCityDistancePopulation estimate
ZIP 97882Umatilla4.8 mi7,976
ZIP 97875Stanfield7.2 mi2,410
ZIP 97844Irrigon12.5 mi3,701
ZIP 97826Echo14.0 mi1,178
ZIP 97839Lexington23.9 mi116

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →