Sunnyside is a city in Benton County, Washington, home to about 16,277 people across 7.5 square miles. Its ZIP code is 98944, and parts of 98938 are in Sunnyside too.
Homes sold for a median of $225 per square foot in the three months ending August 2026, a balanced market.
Mostly Sunnyside
Mostly Outlook; part is in Sunnyside
Each card is that ZIP code’s whole market, including any part outside Sunnyside. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sunnyside’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Seattle–Tacoma International Airport (SEA)133 miles away |
|---|---|
| Closer regional airport | Yakima Air Terminal McAllister Field (YKM)30 miles away |
| Nearest city of 250,000+ | Portland, OR138 miles away |
Straight-line distances from the center of Sunnyside; 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.
Sunnyside had 16,375 residents in the 2020 census, up 18% since 2000.
It’s the 87th largest of 628 towns in Washington by population.
Benton County grew from 7,937 residents in 1910 to 206,873 in 2020.
Benton County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 22°F. About 7.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Sunnyside, WA weather station (about a mile away).
76,642 jobs at 4,960 businesses in Benton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
180 doctors and other health care providers list an office in Sunnyside.
Nearest hospitals
Providers with an office here
| Primary care doctors | 18 |
|---|---|
| Specialist doctors | 34 |
| Dentists | 20 |
| Nurse practitioners and physician assistants | 41 |
| Mental health providers | 47 |
| Physical and occupational therapists | 9 |
| Optometrists | 4 |
| Chiropractors | 7 |
| Pharmacies | 7 |
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 (9 nearby)
Grocery stores (5 nearby)
Pharmacies (2 nearby)
Libraries (1 nearby)
Museums (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.
Established in 1902.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Sunnyside School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Chief Kamiakin Elementary SchoolSunnyside | Pre-K–5 | 575 | Public | 0.8 mi |
| Pioneer Elementary SchoolSunnyside | Pre-K–5 | 602 | Public | 1.1 mi |
| Sun Valley Elementary SchoolSunnyside | Pre-K–K | 474 | Public | 1.4 mi |
| Washington ElementarySunnyside | Pre-K–5 | 602 | Public | 0.4 mi |
| Harrison Middle SchoolSunnyside | 6–8 | 820 | Public | 0.8 mi |
| Sierra Vista Middle SchoolSunnyside | 6–8 | 549 | Public | 1.2 mi |
| SHS Graduation AllianceSunnyside | 9–12 | 4 | Alternative Education | 0.8 mi |
| Sunnyside High SchoolSunnyside | 9–12 | 2,122 | Public | 0.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Sunnyside Christian SchoolSunnyside | Pre-K–12 | 264 | Christian (no specific denomination) | 1.2 mi |
| Trinity Reformed Christian SchoolSunnyside | 1–6 | 7 | Other religious | 0.6 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.
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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.