Zip Code 99116 — Coulee Dam, WA
99116 is a ZIP Code associated with Coulee Dam, WA, located within Okanogan. 99116 ranks #8 out of 19 ZIP codes in Okanogan County by population (and #373 out of 605 in WA). The area supports an estimated population of 1,786 residents across Data Pending housing units, with a population density of 14.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (48.014290, -118.930630)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 99116 |
| Primary City | Coulee Dam |
| State / Province | WA |
| County | Okanogan |
| Total Population | 1,786 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 14.6 people/sq mi |
| Timezone | America/Los_Angeles |
How 99116 Compares
| Metric | ZIP 99116 | Okanogan County | WA State Average |
|---|
| Population | 1,786 | 43,864 (Total) | 7,816,021 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 14.6 /sq mi | -- | -- |
| County Pop Rank | #8 of 19 | -- | -- |
Nearby ZIP Codes
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 →