ZIP code · Seattle · Washington · United States
ZIP code 98178 — Seattle
ZIP code 98178 serves Seattle, Washington.
- Postal code
- 98178Single source Value from one source, not cross-checked.
- City
- Seattle
- County
- King FIPS 53033
- State
- Washington
- Country
- United States
- Coordinates
- 47.4924, -122.2359 — precision precise (locality)
View on OpenStreetMap - Population
- 25,929 (ZCTA, ACS 5-year)
- Population density
- 5,292 / sq mi
- Land area
- 4.9 sq mi (12.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $93,786
- Per-capita income
- $50,180
- Median age
- 40.7
- Households
- 9,462
- Housing units
- 10,018
- Median home value
- $628,200
- Median gross rent
- $1,836 / month
- Congressional district
- WA-9 (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
- Area code
- 206Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 98178 with another ZIP · ZIPs within 25 miles · distance from 98178
Map of ZIP code 98178
Climate — monthly normals
Warmest month Aug (avg high 78°F), coldest Dec (avg low 37°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 48 | 50 | 55 | 60 | 66 | 71 | 77 | 78 | 72 | 61 | 52 | 47 |
| Avg low °F | 37 | 37 | 40 | 43 | 49 | 54 | 58 | 57 | 53 | 46 | 40 | 37 |
| Precip in | 4.9 | 3.2 | 3.7 | 2.8 | 1.9 | 1.5 | 0.6 | 0.9 | 1.5 | 3.5 | 5.6 | 4.5 |
NOAA 1991–2020 climate normals from the nearest station: RENTON MUNI AP (1.0 mi) · NOAA NCEI
Places in ZIP 98178
- 6 schools
- 2 doctors & dentists
- 1 supermarkets
- 6 restaurants & cafés
- 1 bars & pubs
- 17 parks
- 13 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 16 places of worship
- 5 gas stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page