Area Code 509
Washington
Area code 509 serves Washington, primarily Spokane, in the Pacific Time (PT) time zone. It has served the region since 01-Jan-1957.
Demographics & Economics
- Total Population
- 2,076,379
- Population Density
- 30 people/sq mibelow U.S. average (U.S.: 93 people/sq mi)
- Median Household Income
- $73,513near U.S. median (U.S.: $75,144)
- Poverty Rate
- 13.2%above U.S. average (U.S.: 11.5%)
- Unemployment Rate
- 5.7%above U.S. average (U.S.: 3.6%)
- Education Attainment
- Bachelor's Degree+27.6%below U.S. average (U.S.: 33.7%)High School or Lower32.3%
Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.
See how this area code compares to all US area codes in the Statistics dashboard.
Time Zone
- Pacific Time (PT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
WA
Major Cities
- Spokane
- Spokane Valley
- Yakima
- Kennewick
- Pasco
- Richland
- Wenatchee
- Walla Walla
- Pullman
- Moses Lake
- Ellensburg
- West Richland
- Sunnyside
- East Wenatchee
- Cheney
- Liberty Lake
- Grandview
- Airway Heights
- College Place
- Terrace Heights
- Toppenish
- Othello
- Ephrata
- Selah
and 201 more cities
History
Area code 509 was established in 1957 as a geographic area code.
Demographics
The estimated population served by area code 509 is approximately 2,076,379. The population density is 30 people per square mile, which is lower than the national average of 93. The median household income is $73,513, which is near the national median of $75,144. Approximately 27.6% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is lower than the national average. The poverty rate stands at 13.2%, which is higher than the national rate of 11.5%.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 509).
| County | Population | Share |
|---|---|---|
| Spokane, WA | 570,730 | 27.5% |
| Yakima, WA | 271,833 | 13.1% |
| Benton, WA | 248,407 | 12.0% |
| Grant, WA | 120,881 | 5.8% |
| Franklin, WA | 116,701 | 5.6% |
| Chelan, WA | 80,888 | 3.9% |
| Kittitas, WA | 78,219 | 3.8% |
| Douglas, WA | 77,457 | 3.7% |
| Whitman, WA | 72,166 | 3.5% |
| Stevens, WA | 67,852 | 3.3% |
| Walla Walla, WA | 62,244 | 3.0% |
| Okanogan, WA | 57,395 | 2.8% |
| Umatilla, OR | 42,794 | 2.1% |
| Klickitat, WA | 37,917 | 1.8% |
| Adams, WA | 35,414 | 1.7% |
| Pend Oreille, WA | 32,139 | 1.5% |
| Garfield, WA | 22,950 | 1.1% |
| Asotin, WA | 22,460 | 1.1% |
| Lincoln, WA | 17,657 | 0.9% |
| Skamania, WA | 16,896 | 0.8% |
| Ferry, WA | 12,522 | 0.6% |
| Columbia, WA | 9,702 | 0.5% |
| Benewah, ID | 826 | 0.0% |
| Latah, ID | 248 | 0.0% |
| Cowlitz, WA | 81 | 0.0% |
Area Code 509 Family Tree
Area code 509 is an original area code with no splits or overlays. It has been in service since 01-Jan-1957.
Call Context
This area code spans a mix of urban centers and rural communities across WA, with Spokane as a primary city.
Nearby Area Codes
Area codes geographically closest to 509.
Other Area Codes in Washington
Area codes that also serve Washington, linked for easy comparison.