Zip Code 99166 — Republic, WA

ZIP Code 99166 is associated with Republic, WA, in Ferry County. The listed population estimate is 2,953; estimated density is 2.4 people per square mile. Among records with population estimates, it ranks #2 of 9 in Ferry County and #337 of 597 in WA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (48.610330, -118.671500)

Data MetricLocal Statistic
Postal / Zip Code99166
Primary CityRepublic
State / ProvinceWA
CountyFerry
Total Population2,953
Population Density2.4 people/sq mi
TimezoneAmerica/Los_Angeles

How 99166 Compares

MetricZIP 99166Ferry County recordsWA records
Population estimate2,95311,915 (sum)7,816,021 (sum)
Population Density2.4 /sq mi----
County population rank#2 of 9----
State population rank#337 of 597----

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 WA

ZIP CodeCityDistancePopulation estimate
ZIP 99150Malo13.8 mi351
ZIP 98859Wauconda17.6 mi435
ZIP 99118Curlew19.9 mi899
ZIP 99141Kettle Falls24.0 mi5,626
ZIP 99160Orient24.6 mi87

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 →