Sumner is a city in Pierce County, Washington, home to about 10,733 people across 7.5 square miles. Its ZIP code is 98390.
Homes sold for a median of $341 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Sumner. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sumner’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Sumner well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Seattle–Tacoma International Airport (SEA)17 miles away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA29 miles away |
Straight-line distances from the center of Sumner; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Sumner had 10,621 residents in the 2020 census, up 25% since 2000.
It’s the 125th largest of 628 towns in Washington by population.
Pierce County grew from 55,515 residents in 1900 to 921,130 in 2020.
Pierce County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 77°F in summer, and winter lows average 33°F. About 45.2 inches of rain and melted snow fall in a typical year, with about 6 inches of snow.
Source: NOAA 1991–2020 climate normals, Mcmillin Rsvr, WA weather station (5 miles away).
294,765 jobs at 20,051 businesses in Pierce County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
90 doctors and other health care providers list an office in Sumner.
Nearest hospitals
Providers with an office here
| Primary care doctors | 8 |
|---|---|
| Dentists | 13 |
| Nurse practitioners and physician assistants | 10 |
| Mental health providers | 24 |
| Physical and occupational therapists | 23 |
| Optometrists | 1 |
| Chiropractors | 11 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (10 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (2 nearby)
Museums
Theaters and performance venues (1 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Sumner-Bonney Lake School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bonney Lake ElementaryBonney Lake | Pre-K–5 | 435 | Public | 2.9 mi |
| Crestwood ElementaryBonney Lake | Pre-K–5 | 393 | Public | 1.4 mi |
| Daffodil Valley ElementarySumner | Pre-K–5 | 524 | Public | 0.1 mi |
| Liberty Ridge ElementarySumner | Pre-K–5 | 515 | Public | 5.8 mi |
| Maple Lawn ElementarySumner | Pre-K–5 | 628 | Public | 1.1 mi |
| Sumner Special ServicesSumner | Pre-K | 35 | Special Education | 0.6 mi |
| Emerald Hills ElementaryBonney Lake | K–5 | 551 | Public | 2.8 mi |
| Mountain View Middle SchoolBonney Lake | 6–8 | 937 | Public | 4.7 mi |
| Sumner Middle SchoolSumner | 6–8 | 674 | Public | 1.1 mi |
| Sumner High SchoolSumner | 9–12 | 1,857 | Public | 0.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Cornerstone Montessori SchoolSumner | Pre-K–6 | 41 | Nonsectarian | 1.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
Buying or selling around Sumner? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Shares ZIP codes with Alderton.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.