Grand Mound is a community in Thurston County, Washington, home to about 3,287 people across 4.2 square miles. It has no ZIP code of its own: it’s part of 98531 and 98579.
Homes sold for a median of $275 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
Mostly Centralia; part is in Grand Mound
Mostly Rochester; part is in Grand Mound
Each card is that ZIP code’s whole market, including any part outside Grand Mound. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Grand Mound’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)56 miles away |
|---|---|
| Closer regional airport | Olympia Regional Airport (OLM)14 miles away |
| Nearest city of 250,000+ | Seattle, WA65 miles away |
Straight-line distances from the center of Grand Mound; 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.
Grand Mound had 3,301 residents in the 2020 census, up 69% since 2000.
It’s the 247th largest of 628 towns in Washington by population.
Thurston County grew from 9,927 residents in 1900 to 294,793 in 2020.
Thurston County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 78°F in summer, and winter lows average 34°F. About 41.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Centralia, WA weather station (6 miles away).
86,664 jobs at 6,656 businesses in Thurston County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
685 doctors and other health care providers list an office in Grand Mound’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 47 |
|---|---|
| Specialist doctors | 43 |
| Dentists | 23 |
| Nurse practitioners and physician assistants | 73 |
| Mental health providers | 430 |
| Physical and occupational therapists | 54 |
| Optometrists | 4 |
| Chiropractors | 11 |
| Pharmacies | 16 |
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.
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Counts are within about 1.5 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 Centralia School District, Rochester School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Centralia School District SpEd Pre-schoolCentralia | Pre-K | 59 | Public | 4.7 mi |
| Rochester Primary SchoolRochester | Pre-K–2 | 488 | Public | 1.2 mi |
| Edison ElementaryCentralia | K–6 | 313 | Public | 5.5 mi |
| Fords Prairie ElementaryCentralia | K–6 | 443 | Public | 4.1 mi |
| Jefferson Lincoln ElementaryCentralia | K–6 | 357 | Public | 6.4 mi |
| Oakview Elementary SchoolCentralia | K–6 | 317 | Public | 4.5 mi |
| Washington Elementary SchoolCentralia | K–6 | 294 | Public | 6.4 mi |
| Grand Mound ElementaryRochester | 3–5 | 507 | Public | 1.3 mi |
| Rochester Middle SchoolRochester | 6–8 | 535 | Public | 4.1 mi |
| Centralia Middle SchoolCentralia | 7–8 | 479 | Public | 4.7 mi |
| Centralia High SchoolCentralia | 9–12 | 941 | Public | 4.5 mi |
| Futurus High SchoolCentralia | 9–12 | 110 | Alternative Education | 4.8 mi |
| H.e.a.r.t. High SchoolRochester | 9–12 | 37 | Alternative Education | 4.3 mi |
| Rochester High SchoolRochester | 9–12 | 608 | Public | 1.3 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Centralia Christian SchoolCentralia | Pre-K–10 | 224 | Christian (no specific denomination) | 6.7 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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Shares ZIP codes with Centralia, Rochester, Fords Prairie and Bucoda.
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.